For the evaluation of construction quality and the verification of the design of water conservancy and hydropower engineering projects, and especially for the control of dam safety operation behavior, safety monitorin...For the evaluation of construction quality and the verification of the design of water conservancy and hydropower engineering projects, and especially for the control of dam safety operation behavior, safety monitoring sensors are employed in a majority of engineering projects. These sensors are used to monitor the project during the dam construction and operation periods, and play an important role in reservoir safety operation and producing benefits. With the changing of operating environments and run-time of projects, there are some factors affecting the operation and management of projects, such as a certain amount of damaged sensors and instability of the measured data. Therefore, it is urgent to evaluate existing safety monitoring sensors in water conservancy and hydropower engineering projects. However, there are neither standards nor evaluation guidelines at present. Based on engineering practice, this study examined some key techniques for the evaluation of safety monitoring sensors, including the evaluation process of the safety monitoring system, on-site detection methods of two typical pieces of equipment, the differential resistor sensor and vibrating wire sensor, the on-site detection methods of communication cable faults, and a validity test of the sensor measured data. These key techniques were applied in the Xiaolangdi Water Control Project and Xiaoxi Hydropower Project. The results show that the measured data of a majority of sensors are reliable and reasonable, and can reasonably reflect the structural change behavior in the project operating process, indicating that the availabilities of the safety monitoring sensors of the two projects are high展开更多
For the purpose of realizing the information visualization of hydropower engineering management, we construeted three kinds of graphics models sorted by hierarchy for system modelling, employed the construction simula...For the purpose of realizing the information visualization of hydropower engineering management, we construeted three kinds of graphics models sorted by hierarchy for system modelling, employed the construction simulation system to simulate the real-time construction behaviours, introduced the graphics rendering system to organize and update the virtual scene, and designed the interaction system to respond to the user-initiated and simulation-initiated events. So, the real-time, interactive visualization aided system of hydropower engineering management is developed. Eventually, the effectiveness and capabilities of the system are showed through the application examples in China.展开更多
With the development of science and technology in China, the measuring technique in water resources and hydropower engineering is also developing constantly. Measuring technique in water resources and hydropower engin...With the development of science and technology in China, the measuring technique in water resources and hydropower engineering is also developing constantly. Measuring technique in water resources and hydropower engineering is an important link in water conservancy and hydropower projects, which can improve the survey efficiency of water conservancy and hydropower projects and promote the rapid development of China's water conservancy and hydropower projects. This paper will analyze the current situation of measuring technique development of water conservancy and hydropower projects and explore how to improve the measuring efficiency of water conservancy and hydropower projects.展开更多
In recent years, the pace of urbanization in my country has accelerated and the application of water conservancy and hydropower projects has become more and more extensive. The society has also put forward higher requ...In recent years, the pace of urbanization in my country has accelerated and the application of water conservancy and hydropower projects has become more and more extensive. The society has also put forward higher requirements for the construction of this project, mainly including the construction quality and safety of water conservancy and hydropower projects. However, the author found in the actual investigation that the unreasonable construction phenomenon still exists in the current construction of water conservancy and hydropower projects in my country, which seriously hinders the development of water conservancy and hydropower projects. Based on this, this paper will focus on exploring the related issues of water conservancy and hydropower engineering construction quality and safety management and propose countermeasures, hoping to have some reference value.展开更多
Water conservancy and hydropower projects are also a very important livelihood project, which must be paid attention to the application and improvement of grouting use technology, so as to promote the sustainable deve...Water conservancy and hydropower projects are also a very important livelihood project, which must be paid attention to the application and improvement of grouting use technology, so as to promote the sustainable development of water conservancy and hydropower projects. Is the so-called foundation stability, foundation grouting is a reliable means of correction and governance of engineering foundation quality, water conservancy and hydropower engineering foundation grouting needs to combine the specific requirements of the actual engineering, generally by professional organization team, also need to be in the specific construction process constantly find problems and solve problems, gradually optimize and innovation grouting slurry and construction process.展开更多
A comprehensive safety evaluation system taking the most influential factors into account has been developed to evaluate the reliability of hydraulic metal structures. Applying the techniques of AI and DB, the idea of...A comprehensive safety evaluation system taking the most influential factors into account has been developed to evaluate the reliability of hydraulic metal structures. Applying the techniques of AI and DB, the idea of a one-machine and three-base system is proposed. The framework of the three-base system has been designed and the structural framework constructed in turn. A practical example is given to illustrate the process of using this system and it can be used for comparison and analysis purposes. The key technology of the system is its ability to reorganize and improve the expert system＇s knowledge base by establishing the expert system. This system utilizes the computer technology inference process, making safety evaluation conclusions more reasonable and applicable to the actual situation. The system is not only advanced, but also feasible, reliable, artificially intelligent, and has the capacity to constantly grow.展开更多
In terms of rock engineering and technology in hydropower construction,the slope stability and monitoring techniques for high slopes of Three Gorges Project,the stability and support technology for high slopes of hydr...In terms of rock engineering and technology in hydropower construction,the slope stability and monitoring techniques for high slopes of Three Gorges Project,the stability and support technology for high slopes of hydropower projects in deep river valley,the stabilization techniques for underground cavern group with large span and high side walls are introduced in this paper.As for rock engineering and technology in highway and railway construction,the Qinghai-Tibet Railway — new construction techniques in permafrost,the support techniques for large squeezing deformation in Wuqiaoling Tunnel,the construction techniques for tunnels in alpine and high-altitude region,the geological prediction techniques for tunnels in karst region,the microseismic monitoring and early warning techniques for rockbursts in deep and long tunnels are presented.For rock engineering and technology inmining engineering,the innovative techniques for roadway support inmines,the simultaneous extraction technique of pillarless coal and gas in coal seams with low permeability,the safe and efficient deep openmining technology,advances in monitoring,early warning and treatment ofmine dynamic disasters are discussed.In addition,the new anchorage techniques and precision blasting technique in rock engineering are introduced.展开更多
This paper put forward the structure and construction process of three-dimensional visualization of hydroelectric construction system model based on GIS and 3D visualization platform. The paper first describes the 3D ...This paper put forward the structure and construction process of three-dimensional visualization of hydroelectric construction system model based on GIS and 3D visualization platform. The paper first describes the 3D visualization based on GIS, then discusses the method of constructing 3D visual digital model, and then introduces the terrain digital technology, feature modeling technology. Finally, the technical route shows that this method has good practicability.展开更多
In the specific construction management of water conservancy and hydropower engineering, focus on the construction quality control is the key, only to ensure that every link in the construction process is strict and m...In the specific construction management of water conservancy and hydropower engineering, focus on the construction quality control is the key, only to ensure that every link in the construction process is strict and meticulous quality control, for all kinds of processes and process, so as to fully reflect the use of quality control effect, and lay a solid foundation for water conservancy and hydropower engineering. Based on this, this paper focuses on the analysis of the main problems existing in the construction quality control process and the control strategies of water conservancy and hydropower projects.展开更多
In recent years, China's social and economic development has advanced by leaps and bounds, and water conservancy has also been greatly developed. Under the current situation, the scale of water conservancy and hyd...In recent years, China's social and economic development has advanced by leaps and bounds, and water conservancy has also been greatly developed. Under the current situation, the scale of water conservancy and hydropower projects in China is constantly expanding, and it is playing an increasingly important role in agriculture, shipping and hydropower generation. Slope construction is an important part of water conservancy and hydropower projects, and the quality of slope construction directly affects the overall construction level of water conservancy and hydropower projects. However, it is worth noting that there are still some shortcomings in the slope construction of water conservancy and hydropower projects in China at this stage. Some construction units have weak sense of responsibility, and pay low attention to the slope construction, so they cannot strengthen their management. In this case, the slope construction quality of water conservancy and hydropower projects is difficult to be guaranteed, which has a great impact on the subsequent use of water conservancy and hydropower projects, and poses a certain threat to the lives and property safety of people around the project. In this paper, the slope excavation technology and supporting technology in water conservancy and hydropower projects are studied in detail, and some suggestions are put forward, in order to help the construction unit to strengthen the control of the slope construction quality of water conservancy and hydropower projects and improve the slope construction level.展开更多
In the ongoing hydropower projects, wall concrete penetration technology can provide good anti-seepage protection, thus improving the quality and life of hydropower projects. Therefore, it is necessary to seriously ap...In the ongoing hydropower projects, wall concrete penetration technology can provide good anti-seepage protection, thus improving the quality and life of hydropower projects. Therefore, it is necessary to seriously apply the technology of cutoff wall to ensure the quality of the project. The construction technology of concrete cut-off wall in hydropower engineering technology building is studied, the types of concrete cut-off wall are introduced, the construction technical elements of concrete cut-off wall are analyzed, and the specific application of concrete cut-off wall construction technology in hydropower engineering is developed, which provides a theoretical reference for relevant personnel.展开更多
Concrete technology is widely used in various construction fields;water conservancy project is no exception. In the construction of water conservancy projects, we must rely on high-strength concrete as support, and co...Concrete technology is widely used in various construction fields;water conservancy project is no exception. In the construction of water conservancy projects, we must rely on high-strength concrete as support, and concrete construction is also the guarantee of the overall project quality. In addition, concrete construction technology has the advantages of low cost and good performance, so it has been highly valued by construction units. However, there are still some problems in the actual application process, which will inevitably affect the further development of water conservancy projects. Therefore, relevant technical personnel should take corresponding improvement measures to improve the quality of concrete construction and promote the steady development of water conservancy and hydropower projects.展开更多
Since the beginning of the 21st century, China's population base has continued to increase. As a type of project involving national economic development and per capita living standards, water conservancy and hydro...Since the beginning of the 21st century, China's population base has continued to increase. As a type of project involving national economic development and per capita living standards, water conservancy and hydropower projects play a relatively prominent role, so the infrastructure construction of water conservancy and hydropower projects is also very important. Compared with other types of projects, water conservancy and hydropower projects have the distinct characteristics of large construction scale, long construction cycle and complex production links. The risk factors affecting the construction quality of water conservancy and hydropower projects are relatively diverse. How to ensure the overall quality of water conservancy and hydropower project construction management has become an important issue for the practitioners. Practice has proved that in addition to a comprehensive analysis of the causes of construction management problems, targeted management measures should also be taken to eliminate the risk factors affecting the quality of project construction management, so as to further improve the efficiency and quality of water conservancy and hydropower project construction management.展开更多
Electromechanical equipment accounts for a large proportion in water conservancy and hydropower projects. Installation and management of equipment is also the key to the construction of the whole project. Relevant ent...Electromechanical equipment accounts for a large proportion in water conservancy and hydropower projects. Installation and management of equipment is also the key to the construction of the whole project. Relevant enterprises should pay attention to it. Combined with the quality of electromechanical installation, it may affect the quality of water conservancy and hydropower projects, and the problems existing in installation may limit the development of water conservancy and hydropower. Therefore, it is necessary to implement good quality management in the installation of electromechanical equipment, try to solve all problems existing in the installation, and ensure the installation quality of electromechanical equipment to a large extent. In this paper, the water conservancy and hydropower projects in the electromechanical installation construction management of common problems are described, and in view of this, put forward some effective measures, hoping to bring help to everyone.展开更多
In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through const...In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through construction technology, and then strengthen the implementation of high-efficiency engineering construction combined with construction technology. In this process, the constructors need to give full play to the application advantages of the slope excavation support technology, and coordinate it with other technologies in the construction of water conservancy and hydropower projects, so as to reduce the contradictions in the construction, and thus to maximize the improvement of the working process of the construction of water conservancy and hydropower projects.展开更多
With the continuous development of social economy and the continuous progress of project construction theory, BIM technology is more and more applied in the process of engineering management, BIM technology for water ...With the continuous development of social economy and the continuous progress of project construction theory, BIM technology is more and more applied in the process of engineering management, BIM technology for water conservancy and hydropower project construction cost management, quality management, safety management, management of construction management level has been promoted, ensure the success of water conservancy and hydropower project construction. BIM technology can summarize all kinds of information and data in the modernization process of water conservancy and hydropower projects, and provide various assistance functions for the engineering construction work, mainly manifested in technical guidance, accountability, supervision and audit basis provision. The information recording and sharing of BIM technology has greatly reduced the pressure of engineering construction work, promoted the level of modernization of project construction, and made great contributions to the development of Chinas social economy.展开更多
Water conservancy and hydropower project is an important part of economic development, and it is also related to agricultural production and rural development. The construction scale of water conservancy and hydropowe...Water conservancy and hydropower project is an important part of economic development, and it is also related to agricultural production and rural development. The construction scale of water conservancy and hydropower projects is large, and the professional contents involved are complicated. The requirements of materials and technologies are very strict in the whole project. If one of them fails to meet the standard requirements, the quality and life of the project will be affected. In water conservancy and hydropower projects, the concrete structure of the dam body is the foundation of the project, and the stability of the concrete structure of the dam body will also affect the operation of the project to varying degrees. Considering the actual situation, in the new era, the technology level of dam concrete in water conservancy and hydropower projects has been greatly improved, and many advanced technologies have been continuously applied to dam concrete construction, which has improved the overall efficiency of the project. However, on the other hand, the quality and safety accidents of dam concrete construction in water conservancy and hydropower projects occur from time to time. The reason is that the management is not in place, and the management work of relevant units has not been strictly implemented, which leads to quality defects. Based on this, this paper discusses the quality of dam concrete construction in water conservancy and hydropower projects, and puts forward objective and reasonable management measures and optimization countermeasures.展开更多
In modern society, the level of science and technology is constantly improving and the requirements for hydropower are getting higher and higher. Strengthening the construction of water conservancy projects is of grea...In modern society, the level of science and technology is constantly improving and the requirements for hydropower are getting higher and higher. Strengthening the construction of water conservancy projects is of great significance to ensuring peoples livelihood and promoting sustainable development. In water conservancy and hydropower projects, it should be necessary to pay attention to the application of technology, actively introduce advanced modern technology, accurately grasp the key of the project;ensure the safe, stable and stable operation of water conservancy project, ensure the economic benefits of the development of water conservancy and water conservancy and achieve the win-win economic and social benefits.展开更多
[Objective] This study aimed to reveal responses of Magnolia multiflora to soil drought stress. [Method] Pot experiment was employed to simulate drought stress, and photosynthetic and physiological indices of M. multi...[Objective] This study aimed to reveal responses of Magnolia multiflora to soil drought stress. [Method] Pot experiment was employed to simulate drought stress, and photosynthetic and physiological indices of M. multiflora were determined. [Result] The net photosynthetic rate （Pn） of M. multiflora did not change significantly under mild drought stress, and reduced significantly under moderate and severe drought stress. Drought stress reduced stomatal conductance （Gs）, transpiration rate （Tr） and intercellular CO2 concentration （Ci）, and compared with those in the control group, the Pn, Gs, Tr and Ci under severe drought stress declined by 61.04%, 86.27%, 87.77% and 42.63%, respectively. The malondialdehyde （MDA） content in M. multiflora leaves did not increase significantly under mild drought stress, and increased significantly under moderate and severe drought stress. The MDA content in M. multiflora leaves under severe drought stress was 1.63 times as high as that in the control group. The proline （Pro） and soluble sugar contents of M. multiflora increased significantly with the aggravation of drought stress, and those under severe drought stress were 8.06 times and 3.16 times respectively higher than those in the control group. [Conclusion] M. multiflora has a strong drought tolerance, and is suitable for growing in relatively arid environment. It can be used as candidate for vegetation restoration in hydropower engineering slope.展开更多
With the gradual acceleration of China's social and economic development, the situation of water conservancy and hydropower projects in China has also got better and faster development. Especially, grouting techno...With the gradual acceleration of China's social and economic development, the situation of water conservancy and hydropower projects in China has also got better and faster development. Especially, grouting technology in water conservancy and hydropower projects has become a technical measure often used in foundation construction in water conservancy and hydropower projects. For some special strata, such as extra-large leakage channels, large grout-sucking strata, karst areas, water plugging due to water inrush, etc., the grouting methods and techniques used are different. At present, in the development process of water conservancy and hydropower projects, most of them need to use relevant grouting methods. This paper will explore the grouting method of special strata in foundation grouting in water conservancy and hydropower projects.展开更多
基金supported by the National Natural Science Foundation of China(Grants No.51179108and50909066)the Key Research Foundation of Nanjing Hydraulic Research Institute(Grant No.Y711007)
文摘For the evaluation of construction quality and the verification of the design of water conservancy and hydropower engineering projects, and especially for the control of dam safety operation behavior, safety monitoring sensors are employed in a majority of engineering projects. These sensors are used to monitor the project during the dam construction and operation periods, and play an important role in reservoir safety operation and producing benefits. With the changing of operating environments and run-time of projects, there are some factors affecting the operation and management of projects, such as a certain amount of damaged sensors and instability of the measured data. Therefore, it is urgent to evaluate existing safety monitoring sensors in water conservancy and hydropower engineering projects. However, there are neither standards nor evaluation guidelines at present. Based on engineering practice, this study examined some key techniques for the evaluation of safety monitoring sensors, including the evaluation process of the safety monitoring system, on-site detection methods of two typical pieces of equipment, the differential resistor sensor and vibrating wire sensor, the on-site detection methods of communication cable faults, and a validity test of the sensor measured data. These key techniques were applied in the Xiaolangdi Water Control Project and Xiaoxi Hydropower Project. The results show that the measured data of a majority of sensors are reliable and reasonable, and can reasonably reflect the structural change behavior in the project operating process, indicating that the availabilities of the safety monitoring sensors of the two projects are high
基金funded by National Natural Science Foundation of China (No.60574071)
文摘For the purpose of realizing the information visualization of hydropower engineering management, we construeted three kinds of graphics models sorted by hierarchy for system modelling, employed the construction simulation system to simulate the real-time construction behaviours, introduced the graphics rendering system to organize and update the virtual scene, and designed the interaction system to respond to the user-initiated and simulation-initiated events. So, the real-time, interactive visualization aided system of hydropower engineering management is developed. Eventually, the effectiveness and capabilities of the system are showed through the application examples in China.
文摘With the development of science and technology in China, the measuring technique in water resources and hydropower engineering is also developing constantly. Measuring technique in water resources and hydropower engineering is an important link in water conservancy and hydropower projects, which can improve the survey efficiency of water conservancy and hydropower projects and promote the rapid development of China's water conservancy and hydropower projects. This paper will analyze the current situation of measuring technique development of water conservancy and hydropower projects and explore how to improve the measuring efficiency of water conservancy and hydropower projects.
文摘In recent years, the pace of urbanization in my country has accelerated and the application of water conservancy and hydropower projects has become more and more extensive. The society has also put forward higher requirements for the construction of this project, mainly including the construction quality and safety of water conservancy and hydropower projects. However, the author found in the actual investigation that the unreasonable construction phenomenon still exists in the current construction of water conservancy and hydropower projects in my country, which seriously hinders the development of water conservancy and hydropower projects. Based on this, this paper will focus on exploring the related issues of water conservancy and hydropower engineering construction quality and safety management and propose countermeasures, hoping to have some reference value.
文摘Water conservancy and hydropower projects are also a very important livelihood project, which must be paid attention to the application and improvement of grouting use technology, so as to promote the sustainable development of water conservancy and hydropower projects. Is the so-called foundation stability, foundation grouting is a reliable means of correction and governance of engineering foundation quality, water conservancy and hydropower engineering foundation grouting needs to combine the specific requirements of the actual engineering, generally by professional organization team, also need to be in the specific construction process constantly find problems and solve problems, gradually optimize and innovation grouting slurry and construction process.
基金supported by the National Natural Science Foundation of China (Grant No. 50539010)
文摘A comprehensive safety evaluation system taking the most influential factors into account has been developed to evaluate the reliability of hydraulic metal structures. Applying the techniques of AI and DB, the idea of a one-machine and three-base system is proposed. The framework of the three-base system has been designed and the structural framework constructed in turn. A practical example is given to illustrate the process of using this system and it can be used for comparison and analysis purposes. The key technology of the system is its ability to reorganize and improve the expert system＇s knowledge base by establishing the expert system. This system utilizes the computer technology inference process, making safety evaluation conclusions more reasonable and applicable to the actual situation. The system is not only advanced, but also feasible, reliable, artificially intelligent, and has the capacity to constantly grow.
文摘In terms of rock engineering and technology in hydropower construction,the slope stability and monitoring techniques for high slopes of Three Gorges Project,the stability and support technology for high slopes of hydropower projects in deep river valley,the stabilization techniques for underground cavern group with large span and high side walls are introduced in this paper.As for rock engineering and technology in highway and railway construction,the Qinghai-Tibet Railway — new construction techniques in permafrost,the support techniques for large squeezing deformation in Wuqiaoling Tunnel,the construction techniques for tunnels in alpine and high-altitude region,the geological prediction techniques for tunnels in karst region,the microseismic monitoring and early warning techniques for rockbursts in deep and long tunnels are presented.For rock engineering and technology inmining engineering,the innovative techniques for roadway support inmines,the simultaneous extraction technique of pillarless coal and gas in coal seams with low permeability,the safe and efficient deep openmining technology,advances in monitoring,early warning and treatment ofmine dynamic disasters are discussed.In addition,the new anchorage techniques and precision blasting technique in rock engineering are introduced.
文摘This paper put forward the structure and construction process of three-dimensional visualization of hydroelectric construction system model based on GIS and 3D visualization platform. The paper first describes the 3D visualization based on GIS, then discusses the method of constructing 3D visual digital model, and then introduces the terrain digital technology, feature modeling technology. Finally, the technical route shows that this method has good practicability.
文摘In the specific construction management of water conservancy and hydropower engineering, focus on the construction quality control is the key, only to ensure that every link in the construction process is strict and meticulous quality control, for all kinds of processes and process, so as to fully reflect the use of quality control effect, and lay a solid foundation for water conservancy and hydropower engineering. Based on this, this paper focuses on the analysis of the main problems existing in the construction quality control process and the control strategies of water conservancy and hydropower projects.
文摘In recent years, China's social and economic development has advanced by leaps and bounds, and water conservancy has also been greatly developed. Under the current situation, the scale of water conservancy and hydropower projects in China is constantly expanding, and it is playing an increasingly important role in agriculture, shipping and hydropower generation. Slope construction is an important part of water conservancy and hydropower projects, and the quality of slope construction directly affects the overall construction level of water conservancy and hydropower projects. However, it is worth noting that there are still some shortcomings in the slope construction of water conservancy and hydropower projects in China at this stage. Some construction units have weak sense of responsibility, and pay low attention to the slope construction, so they cannot strengthen their management. In this case, the slope construction quality of water conservancy and hydropower projects is difficult to be guaranteed, which has a great impact on the subsequent use of water conservancy and hydropower projects, and poses a certain threat to the lives and property safety of people around the project. In this paper, the slope excavation technology and supporting technology in water conservancy and hydropower projects are studied in detail, and some suggestions are put forward, in order to help the construction unit to strengthen the control of the slope construction quality of water conservancy and hydropower projects and improve the slope construction level.
文摘In the ongoing hydropower projects, wall concrete penetration technology can provide good anti-seepage protection, thus improving the quality and life of hydropower projects. Therefore, it is necessary to seriously apply the technology of cutoff wall to ensure the quality of the project. The construction technology of concrete cut-off wall in hydropower engineering technology building is studied, the types of concrete cut-off wall are introduced, the construction technical elements of concrete cut-off wall are analyzed, and the specific application of concrete cut-off wall construction technology in hydropower engineering is developed, which provides a theoretical reference for relevant personnel.
文摘Concrete technology is widely used in various construction fields;water conservancy project is no exception. In the construction of water conservancy projects, we must rely on high-strength concrete as support, and concrete construction is also the guarantee of the overall project quality. In addition, concrete construction technology has the advantages of low cost and good performance, so it has been highly valued by construction units. However, there are still some problems in the actual application process, which will inevitably affect the further development of water conservancy projects. Therefore, relevant technical personnel should take corresponding improvement measures to improve the quality of concrete construction and promote the steady development of water conservancy and hydropower projects.
文摘Since the beginning of the 21st century, China's population base has continued to increase. As a type of project involving national economic development and per capita living standards, water conservancy and hydropower projects play a relatively prominent role, so the infrastructure construction of water conservancy and hydropower projects is also very important. Compared with other types of projects, water conservancy and hydropower projects have the distinct characteristics of large construction scale, long construction cycle and complex production links. The risk factors affecting the construction quality of water conservancy and hydropower projects are relatively diverse. How to ensure the overall quality of water conservancy and hydropower project construction management has become an important issue for the practitioners. Practice has proved that in addition to a comprehensive analysis of the causes of construction management problems, targeted management measures should also be taken to eliminate the risk factors affecting the quality of project construction management, so as to further improve the efficiency and quality of water conservancy and hydropower project construction management.
文摘Electromechanical equipment accounts for a large proportion in water conservancy and hydropower projects. Installation and management of equipment is also the key to the construction of the whole project. Relevant enterprises should pay attention to it. Combined with the quality of electromechanical installation, it may affect the quality of water conservancy and hydropower projects, and the problems existing in installation may limit the development of water conservancy and hydropower. Therefore, it is necessary to implement good quality management in the installation of electromechanical equipment, try to solve all problems existing in the installation, and ensure the installation quality of electromechanical equipment to a large extent. In this paper, the water conservancy and hydropower projects in the electromechanical installation construction management of common problems are described, and in view of this, put forward some effective measures, hoping to bring help to everyone.
文摘In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through construction technology, and then strengthen the implementation of high-efficiency engineering construction combined with construction technology. In this process, the constructors need to give full play to the application advantages of the slope excavation support technology, and coordinate it with other technologies in the construction of water conservancy and hydropower projects, so as to reduce the contradictions in the construction, and thus to maximize the improvement of the working process of the construction of water conservancy and hydropower projects.
文摘With the continuous development of social economy and the continuous progress of project construction theory, BIM technology is more and more applied in the process of engineering management, BIM technology for water conservancy and hydropower project construction cost management, quality management, safety management, management of construction management level has been promoted, ensure the success of water conservancy and hydropower project construction. BIM technology can summarize all kinds of information and data in the modernization process of water conservancy and hydropower projects, and provide various assistance functions for the engineering construction work, mainly manifested in technical guidance, accountability, supervision and audit basis provision. The information recording and sharing of BIM technology has greatly reduced the pressure of engineering construction work, promoted the level of modernization of project construction, and made great contributions to the development of Chinas social economy.
文摘Water conservancy and hydropower project is an important part of economic development, and it is also related to agricultural production and rural development. The construction scale of water conservancy and hydropower projects is large, and the professional contents involved are complicated. The requirements of materials and technologies are very strict in the whole project. If one of them fails to meet the standard requirements, the quality and life of the project will be affected. In water conservancy and hydropower projects, the concrete structure of the dam body is the foundation of the project, and the stability of the concrete structure of the dam body will also affect the operation of the project to varying degrees. Considering the actual situation, in the new era, the technology level of dam concrete in water conservancy and hydropower projects has been greatly improved, and many advanced technologies have been continuously applied to dam concrete construction, which has improved the overall efficiency of the project. However, on the other hand, the quality and safety accidents of dam concrete construction in water conservancy and hydropower projects occur from time to time. The reason is that the management is not in place, and the management work of relevant units has not been strictly implemented, which leads to quality defects. Based on this, this paper discusses the quality of dam concrete construction in water conservancy and hydropower projects, and puts forward objective and reasonable management measures and optimization countermeasures.
文摘In modern society, the level of science and technology is constantly improving and the requirements for hydropower are getting higher and higher. Strengthening the construction of water conservancy projects is of great significance to ensuring peoples livelihood and promoting sustainable development. In water conservancy and hydropower projects, it should be necessary to pay attention to the application of technology, actively introduce advanced modern technology, accurately grasp the key of the project;ensure the safe, stable and stable operation of water conservancy project, ensure the economic benefits of the development of water conservancy and water conservancy and achieve the win-win economic and social benefits.
基金Supported by National Natural Science Foundation of China(No.51179094)~~
文摘[Objective] This study aimed to reveal responses of Magnolia multiflora to soil drought stress. [Method] Pot experiment was employed to simulate drought stress, and photosynthetic and physiological indices of M. multiflora were determined. [Result] The net photosynthetic rate （Pn） of M. multiflora did not change significantly under mild drought stress, and reduced significantly under moderate and severe drought stress. Drought stress reduced stomatal conductance （Gs）, transpiration rate （Tr） and intercellular CO2 concentration （Ci）, and compared with those in the control group, the Pn, Gs, Tr and Ci under severe drought stress declined by 61.04%, 86.27%, 87.77% and 42.63%, respectively. The malondialdehyde （MDA） content in M. multiflora leaves did not increase significantly under mild drought stress, and increased significantly under moderate and severe drought stress. The MDA content in M. multiflora leaves under severe drought stress was 1.63 times as high as that in the control group. The proline （Pro） and soluble sugar contents of M. multiflora increased significantly with the aggravation of drought stress, and those under severe drought stress were 8.06 times and 3.16 times respectively higher than those in the control group. [Conclusion] M. multiflora has a strong drought tolerance, and is suitable for growing in relatively arid environment. It can be used as candidate for vegetation restoration in hydropower engineering slope.
文摘With the gradual acceleration of China's social and economic development, the situation of water conservancy and hydropower projects in China has also got better and faster development. Especially, grouting technology in water conservancy and hydropower projects has become a technical measure often used in foundation construction in water conservancy and hydropower projects. For some special strata, such as extra-large leakage channels, large grout-sucking strata, karst areas, water plugging due to water inrush, etc., the grouting methods and techniques used are different. At present, in the development process of water conservancy and hydropower projects, most of them need to use relevant grouting methods. This paper will explore the grouting method of special strata in foundation grouting in water conservancy and hydropower projects.
