The Qin-Ba mountainous area represents a signifcant zone of multicultural convergence in China.Its traditional dwellings function not only as everyday living spaces but also as living cultural heritage embodying regio...The Qin-Ba mountainous area represents a signifcant zone of multicultural convergence in China.Its traditional dwellings function not only as everyday living spaces but also as living cultural heritage embodying regional history and collective memory.Taking traditional residences in the Qin-Ba mountains as the research object,this study adopts design-oriented analytical approaches to examine their construction techniques and aesthetic culture.The analysis focuses on material selection,structural systems,and construction methods,while further exploring spatial organization,aesthetic concepts,and decorative craftsmanship.By revealing the technical logic and cultural meanings embedded in these vernacular dwellings,this study aims to provide academic reference for the preservation of traditional building techniques and the sustainable development of regional architectural culture.展开更多
Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is repla...Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is replaced by industry building, the hometown building culture is perishing gradually. In order to inherit and develop the Hanzhong local building, rammed earth wall in Taiyangling and Cangshe hometown is investigated, and the characteristics and construction techniques of the local rammed earth wall are concluded. According to the construction problems, the improvement suggestions are put forward, which establishes the foundation to investigate rammed earth wall further, and guide Rural House construction.展开更多
This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impac...This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.展开更多
The improvement of road surface engineering construction quality is helpful to create safe and comfortable travel conditions for people and prevent traffic accidents. With the acceleration of highway construction in o...The improvement of road surface engineering construction quality is helpful to create safe and comfortable travel conditions for people and prevent traffic accidents. With the acceleration of highway construction in our country, the standard of pavement construction is also improving. Only by strictly following the national and industry standards can the service life of the pavement be prolonged and the subsequent maintenance and management work be guaranteed. Especially in asphalt paving, temperature, humidity and geological conditions will have different degrees of influence, which brings great difficulty to the construction. Performance parameters such as compactness and cohesiveness of asphalt mixture also determine the overall paving quality. In the construction, the effect of various factors should be considered, and a practical construction organization scheme should be prepared according to the construction requirements and actual conditions of highway pavement engineering. In addition, ensure that the paving technology meets the standard requirements, strengthen the construction standardization and reduce the probability of pavement diseases.展开更多
MXenes are a family of two-dimensional (2D) transition metal carbides, carbonitrides/nitrides with superior physical and chemical properties, which have attracted extensive attention since the discovery in 2011. The i...MXenes are a family of two-dimensional (2D) transition metal carbides, carbonitrides/nitrides with superior physical and chemical properties, which have attracted extensive attention since the discovery in 2011. The impressive electrochemical activity of MXene makes it one of the most potential electrode materials in rechargeable batteries and supercapacitors. However, single-component MXene electrodes are difficult to achieve high specific capacity, efficient ion/electron transport, and high stability compatibility in an electrochemical environment. Studies have shown that it is an effective method to introduce nanomaterials between MXene layers to construct heterostructures and to improve the electrochemical performance through the synergistic effect among the components in the heterostructures. The introduction of nanomaterials can effectively suppress the restacking of MXene nanosheets, shorten the diffusion path of ions and promote the electrolyte transport, which is beneficial to enhance the rate performance of MXene;moreover, the excellent mechanical flexibility of MXene can reduce the volume expansion of nanomaterials during charge/discharge, thereby effectively protecting the integrity of the electrode structure and improving the cycling stability. Therefore, in this review, combined with theoretical calculations, we summarize the recent advances of MXene heterostructures in terms of synthesis strategies and energy storage applications, including supercapacitors, metal-ions batteries (Li, Na, K, Mg, Zn, Al) and metal anode protection. Furthermore, potential challenges and application perspectives for MXene heterostructures are also outlined.展开更多
The ZM-1 tissue microarrayer designed by our groups is manufactured in stainless steel and brass and contains many features that make TMA (tissue microarray) paraffin blocks construction faster and more convenient. By...The ZM-1 tissue microarrayer designed by our groups is manufactured in stainless steel and brass and contains many features that make TMA (tissue microarray) paraffin blocks construction faster and more convenient. By means of ZM-1 tissue microarrayer, biopsy needles are used to punch the donor tissue specimens respectively. All the needles with the punched specimen cylinders are arrayed into the array-board, with an array of small holes dug to fit the needles. All the specimen cylinders arraying and the TMA paraffin block shaping are finished in only one step so that the specimen cylinders and the paraffin of the TMA block can very easily be incorporated and the recipient paraffin blocks need not be made in advance, and the paraffin used is the same as that for conventional pathology purpose. ZM-1 tissue microarrayer is easy to be manufactured, does not need any precision location system, and so is much cheaper than the currently used instrument. Our method’s relatively cheap and simple ZM-1 tissue microarrayer technique of constructing TMA paraffin block may facilitate popularization of the TMA technology.展开更多
C60 High Performance Concrete (HPC) was prepared by limiting cement content and adopting compositesuperplasticizer, low-alkalinity expansive agent and high-quality line mixture. The results showed that the performance...C60 High Performance Concrete (HPC) was prepared by limiting cement content and adopting compositesuperplasticizer, low-alkalinity expansive agent and high-quality line mixture. The results showed that the performance of the prepared C60 HPC was excellent. By adopting some advanced construction techniques such as usingsecondary vibration and secondary face compaction, controlling temperature difference and paying special attentionto early curing in the construction process, the prepared C60 HPC had been successfully applied in the monolithicstructure of huge building.展开更多
In the background of the construction of Sutong Yangtze River Bridge(short as Sutong Bridge),the cable construction method and techniques of a thousand-meter scale cable-stayed bridge are introduced.Some key construct...In the background of the construction of Sutong Yangtze River Bridge(short as Sutong Bridge),the cable construction method and techniques of a thousand-meter scale cable-stayed bridge are introduced.Some key construction techniques,such as outspreading cable on deck,installing cable at pylon,pulling and fixing cable at the attachment with decks and cable PE sheath protection are discussed.展开更多
Although Shaanxi is one of the birthplaces of China＇s Buddhism and Taoism, and temples are extensively distributed across the region, there is not much research on the temple gardens. This is especially true in the N...Although Shaanxi is one of the birthplaces of China＇s Buddhism and Taoism, and temples are extensively distributed across the region, there is not much research on the temple gardens. This is especially true in the Northern Shaanxi area where has harsh natural environmental conditions. Here, a number of mountain temples reflect the constructional wisdom of the ancient monks and conform to the Chinese classical garden. The space environment of Buddhist temples, Taoist temples and the celebrity temples tiiat are both in good condition and located in the mountainous envitonment are taken as the object of this research. In addition to the analysis of examples, a systematic review of the distribution, site selection and space construction of mountain temples in Northern Shaanxi is performed, to provide references for the space environment construction of modem temples or gardens.展开更多
Pyramids,symbols of the Ancient Egyptian civilization,are visited by tourists and studied by researchers from all around the world.However,the techniques used by Ancient Egyptians to construct the pyramid,specifically...Pyramids,symbols of the Ancient Egyptian civilization,are visited by tourists and studied by researchers from all around the world.However,the techniques used by Ancient Egyptians to construct the pyramid,specifically,how such a tall structure could have been constructed from huge blocks of stone with the limited productive forces at the time,remains a mystery to the world.Though numerous theories,such as the use of ramps,levers,pulleys,fluid buoyancy,and cast-in-place concrete,have been proposed in academia,no consensus has been reached to date.Based on mechanical principles and the productive forces available at the time,the famous Pyramid of Khufu is used as a case study in this paper to propose a theory of pit-aided construction.The main steps include the digging of the pit,the transportation of stone blocks into the pit,the layer-by-layer construction,and the layer-by-layer filling of soil until the top of the pyramid is completed.The main idea of the pit-aided construction was to use the self-weight of the stone material to achieve the transportation of stone blocks by converting potential energy to kinetic energy,thereby avoiding the large amounts of work that must be done to elevate the huge blocks of stone.The proposed theory of pit-aided construction is consistent with the cultural custom of burial that is associated with tomb construction,namely laying the deceased to rest through burial,and is also consistent with the productive forces available in Ancient Egypt at the time.展开更多
With the continuous development of urbanization construction, rail transit has received more and more attention. For the current subway station, the main structure of open-cut subway station plays an important role in...With the continuous development of urbanization construction, rail transit has received more and more attention. For the current subway station, the main structure of open-cut subway station plays an important role in it. Therefore, the leakage problem with high frequency should be analyzed in time and dealt with reasonably. In this paper, the construction technology of leakage treatment for the main structure of open-cut subway station is analyzed for reference.展开更多
At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not ...At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not advanced enough, which causes great damage to the environment and even wastes resources. The new technology has brought great impact to the bridge construction technology, and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of the road and bridge. In view of this, this paper first briefly analyzes the concept of green construction and the significance of highway green construction, and then discusses in detail the main types of pollution existing in the process of highway construction and highway construction technology under the environment of green construction.展开更多
There are many problems and deficiencies in traditional bank protection methods,which cause certain damage to the ecological environment of river channels.Recently,the issues of river management,improving bank protect...There are many problems and deficiencies in traditional bank protection methods,which cause certain damage to the ecological environment of river channels.Recently,the issues of river management,improving bank protection technology,formulating reasonable construction measures,and ensuring the smooth and efficient implementation of construction have been receiving increasing attention.展开更多
At present, the construction industry is becoming more and more important in modern society. Although Chinas construction industry has made some achievements, there are still some problems that seriously affect its su...At present, the construction industry is becoming more and more important in modern society. Although Chinas construction industry has made some achievements, there are still some problems that seriously affect its sustainable development. In the construction of the project, water leakage will probably occur in the water supply and drainage pipeline after the project is completed, thus affecting the normal use of users. Therefore, it is necessary to conduct in-depth research on the anti-leakage technology of water supply and drainage pipelines, so that construction personnel can master the waterproof technology skillfully and reduce the possibility of water leakage. Based on this, the paper firstly analyzes the main reasons of leakage in water supply and drainage pipeline of construction projects, discusses the key points of construction technology of water supply and drainage pipeline, and discusses its quality control, so as to communicate with relevant parties.展开更多
The road surface at the transition section of the highway bridge can connect the two ends of the bridge, which is the basis for the normal operation of highway traffic and the guarantee for the safe driving of vehicle...The road surface at the transition section of the highway bridge can connect the two ends of the bridge, which is the basis for the normal operation of highway traffic and the guarantee for the safe driving of vehicles. In the process of construction, if its quality is not too high, it will inevitably reduce the safety of vehicles after the completion of the bridge. Therefore, it is necessary to apply effective construction technology in order to ensure the normal use of the bridge. However, with the continuous progress of China's entire transportation industry, many problems in the process of bridge construction have gradually emerged, such as cracks at the bridge and road junctions and road damage, which in turn hinder the normal use of bridges. In this paper, the author analyzes the technical problems and difficulties in the construction process in detail, and gives constructive solutions, which can be used as a reference for future bridge construction projects.展开更多
The construction of municipal roads and bridges is an important foundation for the smooth traveling and transportation.However,if there a reduction in the subgrade and pavement part,the safety and the comfort of the d...The construction of municipal roads and bridges is an important foundation for the smooth traveling and transportation.However,if there a reduction in the subgrade and pavement part,the safety and the comfort of the driver will be seriously affected,therefore,reasonable measures should be taken on time to tackle the related issues.The significance of subgrade and pavement construction in the subsidence section,the key points of the construction,and the appropriate control measures that are should be taken in the actual construction,was discussed in this paper.Further,this paper analyzes the availability of the subgrade and pavement construction technology for the municipal roads and bridges,to provide a reference for engineers.展开更多
Dahaize mine is located in the west of Yuyang District, Yulin City, Shaanxi Province. The administrative division is under the jurisdiction of Bulanghe Township, Yuyang District. The mine is 50 ~ 60km from Yulin City ...Dahaize mine is located in the west of Yuyang District, Yulin City, Shaanxi Province. The administrative division is under the jurisdiction of Bulanghe Township, Yuyang District. The mine is 50 ~ 60km from Yulin City in the east, 300km from Yulin to Baotou in the north, 410km from Dingbian to Yinchuan in the west and 640km from Yan'an to Xi’an in the south. The mine field is located in the southern margin of Mu Us Desert. The mine field is dominated by desert beach and semi fixed sand dune landform. The Loess Lianggang landform can be seen in the Majie and Dadunliang in the southeast corner, and the desert coverage rate is more than 70%. The terrain in mine field is flat with little topographic relief. According to the coal resource reserve conditions, mining technical conditions, coal seam storage conditions, market demand, external construction conditions of mine, combined with the reasonable service life of mine and national policies, the reasonable production capacity of mine is accounted as 15.0 Mt/a.展开更多
With the continuous development of China's social economy, the demand for water resources is increasing. Generally, water exists in natural form, and the water resources in natural form can not be fully utilized. ...With the continuous development of China's social economy, the demand for water resources is increasing. Generally, water exists in natural form, and the water resources in natural form can not be fully utilized. In order to effectively manage the natural water resources and give full play to the application value of water resources, we need to pay attention to the construction of water conservancy projects. Using scientific water conservancy projects can effectively prevent flood risk, ensure social harmony and stability, and ensure the life safety of residents. In the current process of water conservancy project construction, the use of scientific and effective embankment anti-seepage construction technology can improve the level of water conservancy project construction. However, it should be noted that there are still some problems in the application of embankment anti-seepage construction technology in water conservancy projects, which affect the application benefits of embankment anti-seepage construction technology in water conservancy projects. In this case, it is necessary to scientifically select the anti-seepage construction technology according to the specific construction needs of China's water conservancy projects, and comprehensively apply a variety of anti-seepage technologies based on the embankment permeability of water conservancy projects, so as to improve the anti-seepage effect and the embankment construction effect.展开更多
基金This paper is a phased achievement of the project“A Study and Systematization of Folk Customs along the Shu Roads”(Project No.SCJJ24ZD70)a component of the“Sanxingdui,Shu Roads,and Three Sus Studies”Major Project,funded by the Sichuan Provincial Philosophy and Social Sciences Fund.
文摘The Qin-Ba mountainous area represents a signifcant zone of multicultural convergence in China.Its traditional dwellings function not only as everyday living spaces but also as living cultural heritage embodying regional history and collective memory.Taking traditional residences in the Qin-Ba mountains as the research object,this study adopts design-oriented analytical approaches to examine their construction techniques and aesthetic culture.The analysis focuses on material selection,structural systems,and construction methods,while further exploring spatial organization,aesthetic concepts,and decorative craftsmanship.By revealing the technical logic and cultural meanings embedded in these vernacular dwellings,this study aims to provide academic reference for the preservation of traditional building techniques and the sustainable development of regional architectural culture.
基金Supported by Fund for Scientific Research of Shaanxi University of Technology(SLG0811)~~
文摘Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is replaced by industry building, the hometown building culture is perishing gradually. In order to inherit and develop the Hanzhong local building, rammed earth wall in Taiyangling and Cangshe hometown is investigated, and the characteristics and construction techniques of the local rammed earth wall are concluded. According to the construction problems, the improvement suggestions are put forward, which establishes the foundation to investigate rammed earth wall further, and guide Rural House construction.
文摘This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.
文摘The improvement of road surface engineering construction quality is helpful to create safe and comfortable travel conditions for people and prevent traffic accidents. With the acceleration of highway construction in our country, the standard of pavement construction is also improving. Only by strictly following the national and industry standards can the service life of the pavement be prolonged and the subsequent maintenance and management work be guaranteed. Especially in asphalt paving, temperature, humidity and geological conditions will have different degrees of influence, which brings great difficulty to the construction. Performance parameters such as compactness and cohesiveness of asphalt mixture also determine the overall paving quality. In the construction, the effect of various factors should be considered, and a practical construction organization scheme should be prepared according to the construction requirements and actual conditions of highway pavement engineering. In addition, ensure that the paving technology meets the standard requirements, strengthen the construction standardization and reduce the probability of pavement diseases.
基金Financial support from the National Key Research and Development Program of China(2017YFE0113500)the National Natu 1 ral Science Foundation of China(51872027 and 51772077)are gratefully acknowledged.
文摘MXenes are a family of two-dimensional (2D) transition metal carbides, carbonitrides/nitrides with superior physical and chemical properties, which have attracted extensive attention since the discovery in 2011. The impressive electrochemical activity of MXene makes it one of the most potential electrode materials in rechargeable batteries and supercapacitors. However, single-component MXene electrodes are difficult to achieve high specific capacity, efficient ion/electron transport, and high stability compatibility in an electrochemical environment. Studies have shown that it is an effective method to introduce nanomaterials between MXene layers to construct heterostructures and to improve the electrochemical performance through the synergistic effect among the components in the heterostructures. The introduction of nanomaterials can effectively suppress the restacking of MXene nanosheets, shorten the diffusion path of ions and promote the electrolyte transport, which is beneficial to enhance the rate performance of MXene;moreover, the excellent mechanical flexibility of MXene can reduce the volume expansion of nanomaterials during charge/discharge, thereby effectively protecting the integrity of the electrode structure and improving the cycling stability. Therefore, in this review, combined with theoretical calculations, we summarize the recent advances of MXene heterostructures in terms of synthesis strategies and energy storage applications, including supercapacitors, metal-ions batteries (Li, Na, K, Mg, Zn, Al) and metal anode protection. Furthermore, potential challenges and application perspectives for MXene heterostructures are also outlined.
基金Project (No. G1998051200) supported by the National Basic Re-search Program (973) of China
文摘The ZM-1 tissue microarrayer designed by our groups is manufactured in stainless steel and brass and contains many features that make TMA (tissue microarray) paraffin blocks construction faster and more convenient. By means of ZM-1 tissue microarrayer, biopsy needles are used to punch the donor tissue specimens respectively. All the needles with the punched specimen cylinders are arrayed into the array-board, with an array of small holes dug to fit the needles. All the specimen cylinders arraying and the TMA paraffin block shaping are finished in only one step so that the specimen cylinders and the paraffin of the TMA block can very easily be incorporated and the recipient paraffin blocks need not be made in advance, and the paraffin used is the same as that for conventional pathology purpose. ZM-1 tissue microarrayer is easy to be manufactured, does not need any precision location system, and so is much cheaper than the currently used instrument. Our method’s relatively cheap and simple ZM-1 tissue microarrayer technique of constructing TMA paraffin block may facilitate popularization of the TMA technology.
文摘C60 High Performance Concrete (HPC) was prepared by limiting cement content and adopting compositesuperplasticizer, low-alkalinity expansive agent and high-quality line mixture. The results showed that the performance of the prepared C60 HPC was excellent. By adopting some advanced construction techniques such as usingsecondary vibration and secondary face compaction, controlling temperature difference and paying special attentionto early curing in the construction process, the prepared C60 HPC had been successfully applied in the monolithicstructure of huge building.
基金National Science and Technology Support Program of China(No.2006BAG04B02)
文摘In the background of the construction of Sutong Yangtze River Bridge(short as Sutong Bridge),the cable construction method and techniques of a thousand-meter scale cable-stayed bridge are introduced.Some key construction techniques,such as outspreading cable on deck,installing cable at pylon,pulling and fixing cable at the attachment with decks and cable PE sheath protection are discussed.
基金Sponsored by Fundamental Research Funds for the Central Universities(2452018138,2452018137)
文摘Although Shaanxi is one of the birthplaces of China＇s Buddhism and Taoism, and temples are extensively distributed across the region, there is not much research on the temple gardens. This is especially true in the Northern Shaanxi area where has harsh natural environmental conditions. Here, a number of mountain temples reflect the constructional wisdom of the ancient monks and conform to the Chinese classical garden. The space environment of Buddhist temples, Taoist temples and the celebrity temples tiiat are both in good condition and located in the mountainous envitonment are taken as the object of this research. In addition to the analysis of examples, a systematic review of the distribution, site selection and space construction of mountain temples in Northern Shaanxi is performed, to provide references for the space environment construction of modem temples or gardens.
文摘Pyramids,symbols of the Ancient Egyptian civilization,are visited by tourists and studied by researchers from all around the world.However,the techniques used by Ancient Egyptians to construct the pyramid,specifically,how such a tall structure could have been constructed from huge blocks of stone with the limited productive forces at the time,remains a mystery to the world.Though numerous theories,such as the use of ramps,levers,pulleys,fluid buoyancy,and cast-in-place concrete,have been proposed in academia,no consensus has been reached to date.Based on mechanical principles and the productive forces available at the time,the famous Pyramid of Khufu is used as a case study in this paper to propose a theory of pit-aided construction.The main steps include the digging of the pit,the transportation of stone blocks into the pit,the layer-by-layer construction,and the layer-by-layer filling of soil until the top of the pyramid is completed.The main idea of the pit-aided construction was to use the self-weight of the stone material to achieve the transportation of stone blocks by converting potential energy to kinetic energy,thereby avoiding the large amounts of work that must be done to elevate the huge blocks of stone.The proposed theory of pit-aided construction is consistent with the cultural custom of burial that is associated with tomb construction,namely laying the deceased to rest through burial,and is also consistent with the productive forces available in Ancient Egypt at the time.
文摘With the continuous development of urbanization construction, rail transit has received more and more attention. For the current subway station, the main structure of open-cut subway station plays an important role in it. Therefore, the leakage problem with high frequency should be analyzed in time and dealt with reasonably. In this paper, the construction technology of leakage treatment for the main structure of open-cut subway station is analyzed for reference.
文摘At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not advanced enough, which causes great damage to the environment and even wastes resources. The new technology has brought great impact to the bridge construction technology, and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of the road and bridge. In view of this, this paper first briefly analyzes the concept of green construction and the significance of highway green construction, and then discusses in detail the main types of pollution existing in the process of highway construction and highway construction technology under the environment of green construction.
文摘There are many problems and deficiencies in traditional bank protection methods,which cause certain damage to the ecological environment of river channels.Recently,the issues of river management,improving bank protection technology,formulating reasonable construction measures,and ensuring the smooth and efficient implementation of construction have been receiving increasing attention.
文摘At present, the construction industry is becoming more and more important in modern society. Although Chinas construction industry has made some achievements, there are still some problems that seriously affect its sustainable development. In the construction of the project, water leakage will probably occur in the water supply and drainage pipeline after the project is completed, thus affecting the normal use of users. Therefore, it is necessary to conduct in-depth research on the anti-leakage technology of water supply and drainage pipelines, so that construction personnel can master the waterproof technology skillfully and reduce the possibility of water leakage. Based on this, the paper firstly analyzes the main reasons of leakage in water supply and drainage pipeline of construction projects, discusses the key points of construction technology of water supply and drainage pipeline, and discusses its quality control, so as to communicate with relevant parties.
文摘The road surface at the transition section of the highway bridge can connect the two ends of the bridge, which is the basis for the normal operation of highway traffic and the guarantee for the safe driving of vehicles. In the process of construction, if its quality is not too high, it will inevitably reduce the safety of vehicles after the completion of the bridge. Therefore, it is necessary to apply effective construction technology in order to ensure the normal use of the bridge. However, with the continuous progress of China's entire transportation industry, many problems in the process of bridge construction have gradually emerged, such as cracks at the bridge and road junctions and road damage, which in turn hinder the normal use of bridges. In this paper, the author analyzes the technical problems and difficulties in the construction process in detail, and gives constructive solutions, which can be used as a reference for future bridge construction projects.
文摘The construction of municipal roads and bridges is an important foundation for the smooth traveling and transportation.However,if there a reduction in the subgrade and pavement part,the safety and the comfort of the driver will be seriously affected,therefore,reasonable measures should be taken on time to tackle the related issues.The significance of subgrade and pavement construction in the subsidence section,the key points of the construction,and the appropriate control measures that are should be taken in the actual construction,was discussed in this paper.Further,this paper analyzes the availability of the subgrade and pavement construction technology for the municipal roads and bridges,to provide a reference for engineers.
文摘Dahaize mine is located in the west of Yuyang District, Yulin City, Shaanxi Province. The administrative division is under the jurisdiction of Bulanghe Township, Yuyang District. The mine is 50 ~ 60km from Yulin City in the east, 300km from Yulin to Baotou in the north, 410km from Dingbian to Yinchuan in the west and 640km from Yan'an to Xi’an in the south. The mine field is located in the southern margin of Mu Us Desert. The mine field is dominated by desert beach and semi fixed sand dune landform. The Loess Lianggang landform can be seen in the Majie and Dadunliang in the southeast corner, and the desert coverage rate is more than 70%. The terrain in mine field is flat with little topographic relief. According to the coal resource reserve conditions, mining technical conditions, coal seam storage conditions, market demand, external construction conditions of mine, combined with the reasonable service life of mine and national policies, the reasonable production capacity of mine is accounted as 15.0 Mt/a.
文摘With the continuous development of China's social economy, the demand for water resources is increasing. Generally, water exists in natural form, and the water resources in natural form can not be fully utilized. In order to effectively manage the natural water resources and give full play to the application value of water resources, we need to pay attention to the construction of water conservancy projects. Using scientific water conservancy projects can effectively prevent flood risk, ensure social harmony and stability, and ensure the life safety of residents. In the current process of water conservancy project construction, the use of scientific and effective embankment anti-seepage construction technology can improve the level of water conservancy project construction. However, it should be noted that there are still some problems in the application of embankment anti-seepage construction technology in water conservancy projects, which affect the application benefits of embankment anti-seepage construction technology in water conservancy projects. In this case, it is necessary to scientifically select the anti-seepage construction technology according to the specific construction needs of China's water conservancy projects, and comprehensively apply a variety of anti-seepage technologies based on the embankment permeability of water conservancy projects, so as to improve the anti-seepage effect and the embankment construction effect.
