For the development of a city and even a country, the construction of water conservancy projects is very important. In the process of urban construction, most of the projects are directly related to water conservancy ...For the development of a city and even a country, the construction of water conservancy projects is very important. In the process of urban construction, most of the projects are directly related to water conservancy construction. With the accelerating pace of socialist construction and the gradual upgrading of water conservancy construction, the problem of water and soil loss has become increasingly prominent. Therefore, it is very important for various effects on the natural environment to solve the problem of soil erosion in the process of water conservancy construction. Based on this, this paper mainly analyzes the design of water and soil conservation measures for water conservancy construction projects.展开更多
The anti-seepage ability is the fundamental factor to measure the quality and benefit of water conservancy projects, and it is the reference basis to judge whether the timeliness of water conservancy projects meets th...The anti-seepage ability is the fundamental factor to measure the quality and benefit of water conservancy projects, and it is the reference basis to judge whether the timeliness of water conservancy projects meets the requirements of construction drawings, and it also occupies the most prominent position in the whole construction. But it is undeniable that there is leakage in a considerable part of water conservancy projects, which releases an obvious signal that the application of anti-seepage technology in the construction of water conservancy projects in China is still not deep enough, which needs further research and exploration. With the continuous improvement of China's industrialization and urbanization level, the requirements of all kinds of industrial construction and people's production and life for energy development have been more obviously adjusted and changed compared with the past. It is no longer based on simple quantitative production, but more emphasis on the improvement of technology and quality, which means that construction enterprises should pay more attention to the seepage control management of water conservancy projects.展开更多
The construction of water conservancy projects is an important measure to integrate mountains, fields, lakes and grass to promote the coordinated development of economy and society. It is also an inevitable requiremen...The construction of water conservancy projects is an important measure to integrate mountains, fields, lakes and grass to promote the coordinated development of economy and society. It is also an inevitable requirement to implement the construction of ecological civilization, promote the construction of a well-off society and ensure the flood control safety of river basins. Safe production is an important guarantee and inevitable requirement to realize economic development and social stability, as well as the fundamental condition to create a harmonious society. There are many safety production problems in water conservancy project construction, which are faced with poor working conditions and extremely complex construction environment. It is very important to effectively solve the safety production problems in water conservancy project construction.展开更多
At present, China's infrastructure construction industry is expanding, and water conservancy and hydropower construction projects are also increasing. In the construction process, quality and safety problems are e...At present, China's infrastructure construction industry is expanding, and water conservancy and hydropower construction projects are also increasing. In the construction process, quality and safety problems are easy to occur due to the influence of various factors. Crack in concrete is also a very big problem. If it is not solved as soon as possible, it will also affect the safety and stability of water conservancy and hydropower structures. Therefore, for the construction unit, it is necessary to timely understand the causes of concrete cracks, control and prevent such causes, prevent the further expansion of concrete cracks, and repair the cracks in concrete in time. This paper mainly analyzes the specific causes of concrete cracks, and puts forward some strategies for the prevention and treatment of concrete cracks in water conservancy and hydropower projects, which has a certain reference value for improving the construction quality of water conservancy and hydropower projects.展开更多
The irrigation and water conservancy project provides the basic guarantee for the rural agricultural economic development, and requires greater function and effect in water supply, drainage, waterlogging, drought prev...The irrigation and water conservancy project provides the basic guarantee for the rural agricultural economic development, and requires greater function and effect in water supply, drainage, waterlogging, drought prevention, irrigation and other farmland services. However, there are still some problems in the management of farmland water conservancy project, such as imperfect system, unclear responsibility and inactive subject, which hinder the development of farmland water conservancy project to a certain extent. In the context of building a new countryside, the management of irrigation and water conservancy projects should implement and Xi Jining New Era Socialism with Chinese Characteristics, adhere to the concept of scientific development, focus on the overall situation, seek benefits from management, and promote the high-quality development of project management.展开更多
The Three-River Headwater Region(TRHR)of China is a typical representative of the alpine environment in the Central Asian plateau and the alpine grassland in the world.Grassland degradation is one of its serious eco-l...The Three-River Headwater Region(TRHR)of China is a typical representative of the alpine environment in the Central Asian plateau and the alpine grassland in the world.Grassland degradation is one of its serious eco-logical problems.The purpose of this study is to quantify the joint impacts of climate and human activities on grassland changes in TRHR after two phases of Ecological Conservation and Construction Project(Ecological Project).Grassland vegetation coverage is selected as an indicator for analyzing grassland changes.We adopt Sen+Mann-Kendall trend analysis,residual trend analysis and correlation analysis methods to analyze the trends in spatial-temporal changes and driving factors of grassland in TRHR from 2000 to 2019.The results show that:(1)The grassland has been mainly restored,and the degraded grassland area only accounts for 1.66%of TRHR.After the implementation of the first phase of the Ecological Project,the percentage of restored grassland area has significantly increased from 8.82%to 24.57%,and slightly decreased during the second phase.(2)The establish-ment of national nature reserves and the implementation of the Ecological Project have changed the situation that“the grassland inside the reserve is worse than that outside the reserve”.(3)Grassland restoration is mainly af-fected by the joint effects of climate and human activities.Nevertheless,grassland degradation is mainly affected by human activities such as overgrazing and grassland reclamation.All of these findings can enrich our under-standing of grassland restoration in TRHR.Artificial measures have certain limitations in promoting grassland restoration.Natural restoration should be considered when human beings strengthen ecological conservation and transform their production and life styles.展开更多
文摘For the development of a city and even a country, the construction of water conservancy projects is very important. In the process of urban construction, most of the projects are directly related to water conservancy construction. With the accelerating pace of socialist construction and the gradual upgrading of water conservancy construction, the problem of water and soil loss has become increasingly prominent. Therefore, it is very important for various effects on the natural environment to solve the problem of soil erosion in the process of water conservancy construction. Based on this, this paper mainly analyzes the design of water and soil conservation measures for water conservancy construction projects.
文摘The anti-seepage ability is the fundamental factor to measure the quality and benefit of water conservancy projects, and it is the reference basis to judge whether the timeliness of water conservancy projects meets the requirements of construction drawings, and it also occupies the most prominent position in the whole construction. But it is undeniable that there is leakage in a considerable part of water conservancy projects, which releases an obvious signal that the application of anti-seepage technology in the construction of water conservancy projects in China is still not deep enough, which needs further research and exploration. With the continuous improvement of China's industrialization and urbanization level, the requirements of all kinds of industrial construction and people's production and life for energy development have been more obviously adjusted and changed compared with the past. It is no longer based on simple quantitative production, but more emphasis on the improvement of technology and quality, which means that construction enterprises should pay more attention to the seepage control management of water conservancy projects.
文摘The construction of water conservancy projects is an important measure to integrate mountains, fields, lakes and grass to promote the coordinated development of economy and society. It is also an inevitable requirement to implement the construction of ecological civilization, promote the construction of a well-off society and ensure the flood control safety of river basins. Safe production is an important guarantee and inevitable requirement to realize economic development and social stability, as well as the fundamental condition to create a harmonious society. There are many safety production problems in water conservancy project construction, which are faced with poor working conditions and extremely complex construction environment. It is very important to effectively solve the safety production problems in water conservancy project construction.
文摘At present, China's infrastructure construction industry is expanding, and water conservancy and hydropower construction projects are also increasing. In the construction process, quality and safety problems are easy to occur due to the influence of various factors. Crack in concrete is also a very big problem. If it is not solved as soon as possible, it will also affect the safety and stability of water conservancy and hydropower structures. Therefore, for the construction unit, it is necessary to timely understand the causes of concrete cracks, control and prevent such causes, prevent the further expansion of concrete cracks, and repair the cracks in concrete in time. This paper mainly analyzes the specific causes of concrete cracks, and puts forward some strategies for the prevention and treatment of concrete cracks in water conservancy and hydropower projects, which has a certain reference value for improving the construction quality of water conservancy and hydropower projects.
文摘The irrigation and water conservancy project provides the basic guarantee for the rural agricultural economic development, and requires greater function and effect in water supply, drainage, waterlogging, drought prevention, irrigation and other farmland services. However, there are still some problems in the management of farmland water conservancy project, such as imperfect system, unclear responsibility and inactive subject, which hinder the development of farmland water conservancy project to a certain extent. In the context of building a new countryside, the management of irrigation and water conservancy projects should implement and Xi Jining New Era Socialism with Chinese Characteristics, adhere to the concept of scientific development, focus on the overall situation, seek benefits from management, and promote the high-quality development of project management.
基金This research is jointly funded by Key Technologies Research and De-velopment Program of China(Grant No.2017YFC0404503)funding project for basic scientific research operations of China’s Central Public Welfare Scientific Research Institutes(AR2117).
文摘The Three-River Headwater Region(TRHR)of China is a typical representative of the alpine environment in the Central Asian plateau and the alpine grassland in the world.Grassland degradation is one of its serious eco-logical problems.The purpose of this study is to quantify the joint impacts of climate and human activities on grassland changes in TRHR after two phases of Ecological Conservation and Construction Project(Ecological Project).Grassland vegetation coverage is selected as an indicator for analyzing grassland changes.We adopt Sen+Mann-Kendall trend analysis,residual trend analysis and correlation analysis methods to analyze the trends in spatial-temporal changes and driving factors of grassland in TRHR from 2000 to 2019.The results show that:(1)The grassland has been mainly restored,and the degraded grassland area only accounts for 1.66%of TRHR.After the implementation of the first phase of the Ecological Project,the percentage of restored grassland area has significantly increased from 8.82%to 24.57%,and slightly decreased during the second phase.(2)The establish-ment of national nature reserves and the implementation of the Ecological Project have changed the situation that“the grassland inside the reserve is worse than that outside the reserve”.(3)Grassland restoration is mainly af-fected by the joint effects of climate and human activities.Nevertheless,grassland degradation is mainly affected by human activities such as overgrazing and grassland reclamation.All of these findings can enrich our under-standing of grassland restoration in TRHR.Artificial measures have certain limitations in promoting grassland restoration.Natural restoration should be considered when human beings strengthen ecological conservation and transform their production and life styles.
