In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable...In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable that there will be a large number of skyscrapers, and a large number of electronic equipment will be installed during the construction. Because of the intelligent characteristics of the comprehensive building, its utilization rate is much higher than that of the traditional building. Therefore, the construction of electrical engineering and land protection requirements are higher. In order to minimize safety risks and create a good living and working environment for users, construction techniques must be strictly controlled during electronic installation and related installations must be properly managed. In addition, there is a need to protect the earth and improve the electrical safety of electromechanical equipment in high-rise buildings.展开更多
At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sus...At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sustainable development and optimization, and technical problems have always existed. Therefore, the municipal engineering construction will inevitably have a certain impact and damage on the surrounding environment. If the technology cannot support the engineering construction, it will inevitably lead to the waste of resources, which is contrary to the concept of sustainable development advocated. In view of this situation, this paper aims to explore the municipal engineering construction under the concept of green environmental protection, and improve the utilization rate of resources through scientific and advanced energy-saving and environmental protection technology, so as to reduce the impact on the surrounding environment.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
The use of energy-saving technology in buildings can not only reduce energy consumption, but also improve the environmental protection of buildings, and give consideration to environmental protection while reducing co...The use of energy-saving technology in buildings can not only reduce energy consumption, but also improve the environmental protection of buildings, and give consideration to environmental protection while reducing construction costs. Construction companies must also take this point into full consideration, increase research and use of energy-saving and environment-friendly technologies, make use of renewable resources, pay attention to the recycling of energy, and transform nature in construction to ease the pressure of nature, so as to achieve the harmonious and healthy development of man and nature. Based on this, this paper analyzes the key technologies such as energy conservation and protection in the construction of housing construction projects.展开更多
Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather....Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.展开更多
With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples ...With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples home on which to live cannot be ignored. In the last century, China was in an important period of economic restructuring and strengthening the countrys strength. Industrial development was used to promote the countrys economic construction. Under the extensive industrial development model, the environmental pollution problem became more and more serious, and various air pollution, soil pollution and water pollution problems emerged one after another. With the transformation of Chinas economic system, a sustainable development strategic plan was put forward. The 14th Five-Year Plan even took "double carbon" as an important goal for Chinas future development. Therefore, it is also necessary to strengthen the exploration of the use of ecological environment monitoring technology and environmental protection technology, master the correct way of using the technology, and lay a solid foundation for Chinas ecological environment protection work.展开更多
The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemica...The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemical manufacturing using a large number of chemical materials will produce a large amount of chemical waste in the industrial production process, which has a great impact on environmental protection. Therefore, our country must pay attention to the harm of chemical manufacturing to the environment. Due to the existence of green chemical environmental protection technology, it can reasonably deal with the environmental pollution problems caused by traditional chemical technology, thus effectively improving the environmental protection problems in our country, which is of great significance to the development of our chemical industry. Based on the definition and application direction of green chemical technology, this paper focuses on how to use green chemical technology in practical application and how to improve the effect of green chemical technology, hoping to provide some help for the chemical industry in China to use green environmental protection technology to improve the environment.展开更多
With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our...With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our province, and its own yield and quality have always been concerned by people. Plant protection technology plays an important role in wheat high-yield cultivation, and can also promote the construction and development of modern agriculture. Therefore, the relevant units should pay more attention to the plant protection technology, have a comprehensive understanding of the specific content and process of the technology, and work out an appropriate technology implementation plan based on the actual situation, so as to improve the effectiveness of the technology operation and further ensure the quality and quantity of wheat production.展开更多
With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great change...With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.展开更多
If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial r...If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial resources to carry out the maintenance, and in the process of maintenance, it is very likely that safety accidents will occur, causing casualties. Therefore, it is necessary to establish an effective lightning protection system for the medium wave radio transmitting station, especially for the positions such as the transmitting power supply, antenna and the antenna dispatching network, so as to ensure that the radio can be broadcast normally in thunderstorm weather.展开更多
Slope excavation and protection technology is a frequently used technology in water conservancy and hydropower projects. In the application of slope excavation and protection technology, there are mainly three methods...Slope excavation and protection technology is a frequently used technology in water conservancy and hydropower projects. In the application of slope excavation and protection technology, there are mainly three methods, i.e. anchor supporting method, drilling and blasting method and layered method, etc. Among these three methods, one is the method of hanging sprayed concrete, which is mainly aimed at strengthening the seal of the slope in a deeper level, so as to completely prevent the deterioration of stability caused by weathering. The supporting process of the anchor rod cannot be separated from the anchor rod of the slope, and the key is to reinforce the slope, which is a special and commonly used slope construction technology. The key to the drilling and blasting method in the real construction process is to carry out efficient slope excavation. Based on this process, in the actual operation of drilling and blasting, the two technologies must be carried out in a targeted manner, and in the construction process must be carried out from top to bottom, level by level. In addition, the layered slope excavation and protection technology can effectively improve the flat supporting structure of the slope, thus shortening the construction time and improving the construction efficiency. In addition, when facing the slope rocks with poor geological environment, it is necessary to carry out grouting in the process of excavation to ensure deep support and further improve the safety and stability of the slope. The last step is to further secure the steel strand after grouting to ensure its safety and stability.展开更多
1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and techn...1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and technology should be great to the need economic construction and economic construction must rely on science and technology.展开更多
The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma trea...The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma treatment technology for the environmental contaminantswas synthetically studied, and the reaction processing and mechanism between the low-pressureplasma and the environmental contaminants were theoretically analyzed. At last, the prospectsand existing problems on the application of low-pressure plasma in the field of environmentalprotection were discussed.展开更多
Relay protection in electrical engineering refers to the combination of electronic technology, network technology and control technology to realize the detection of power system faults, scientific and reasonable analy...Relay protection in electrical engineering refers to the combination of electronic technology, network technology and control technology to realize the detection of power system faults, scientific and reasonable analysis and treatment of faults, and calculation of transient energy to select the best coincidence time in the system. Therefore, in order to better play the specific role of relay protection in electrical engineering, through the analysis of the working principle of relay protection, this paper explores the important role of relay protection automation technology in electrical engineering and specific application methods, and further analyzes and discusses the relevant maintenance strategies of relay protection automation technology.展开更多
Due to the social and economic development, the urban population is increasing and the living space is gradually expanding to high altitude. The International Conference on High-rise Buildings has determined that more...Due to the social and economic development, the urban population is increasing and the living space is gradually expanding to high altitude. The International Conference on High-rise Buildings has determined that more than 40 storeys are superstructure. The rapid development of super high-rise building construction in China has promoted the development of construction industry and related industries. The construction of high-rise buildings has a negative impact on the environment in urban areas. The unreasonable scientific design of high-rise buildings results in the waste of energy resources. How to achieve the maximum efficiency with the lowest energy consumption is an urgent problem in the development of high-rise buildings. Scientific design of ultra-high level water supply and drainage system, making full use of green energy-saving technology to protect the environment and save energy are the key links to promote the development of ultra-high level green sanitation in our country.展开更多
In recent years, microelectronic components are more widely used in relay protection devices, but most of the electronic devices are electronic sensitive devices, which are easy to be affected by interference. When th...In recent years, microelectronic components are more widely used in relay protection devices, but most of the electronic devices are electronic sensitive devices, which are easy to be affected by interference. When the relay protection devices are interfered in the power system, if there is a fault, it will affect the overall security of the power grid, resulting in the power grid cannot operate stably. When the interference energy exceeds the maximum allowable energy of the logic circuit, it will directly damage the components and affect the normal operation of the relay protection device. Therefore, strengthening the anti-interference ability of relay protection and automation devices has become an important topic in power system.展开更多
In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment ...In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment of wind farms was conducted according to the Lightning Protection for Wind Energy System(IEC 61400-24-2019),which proposed the method of lightning strike risk assessment for wind turbine.In fact,the basic idea of the two is the same,that is,the source of the lightning strike wind turbine is transformed from the former S1-S4 to the latter N D-N DJ.According to the above method,wind farm was evaluated,and it has been proved that the practice can not achieve good results.After 2018,China has issued the Guide to Evaluation of Lightning Protection Technology in Buildings(T/GZLY 3-2022)and the Technical Specifications for Lightning Interception in Forest Areas(T/LYCY 4062-2024)based on semicircle protection,in which the source of risk defined by lightning point was closer to the reality,highly targeted and effective.Taking offshore wind farm as an example,this paper introduced a new method of establishing six evaluation indicators to determine the risk level according to the principle of compliance and the new protection technology of semi-circular method,which can be used as a reference for technical personnel.展开更多
The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production ...The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production and operation and maintenance. Overhead transmission lines in the wind farm area are exposed to the natural environment for a long time, which can easily cause lightning strikes to the ground wire and self-supporting angle steel towers. This paper analyzes and studies three common lightning protection technology principles and corresponding specific measures for overhead transmission lines. For a wind farm in Shandong Province, through collecting field data, theoretical calculations and other methods. Finally, a scheme for reducing grounding resistance and optimizing lightning protection design is proposed to ensure the safe operation of transmission line projects in the wind farm and the stability of the power grid.展开更多
文摘In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable that there will be a large number of skyscrapers, and a large number of electronic equipment will be installed during the construction. Because of the intelligent characteristics of the comprehensive building, its utilization rate is much higher than that of the traditional building. Therefore, the construction of electrical engineering and land protection requirements are higher. In order to minimize safety risks and create a good living and working environment for users, construction techniques must be strictly controlled during electronic installation and related installations must be properly managed. In addition, there is a need to protect the earth and improve the electrical safety of electromechanical equipment in high-rise buildings.
文摘At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sustainable development and optimization, and technical problems have always existed. Therefore, the municipal engineering construction will inevitably have a certain impact and damage on the surrounding environment. If the technology cannot support the engineering construction, it will inevitably lead to the waste of resources, which is contrary to the concept of sustainable development advocated. In view of this situation, this paper aims to explore the municipal engineering construction under the concept of green environmental protection, and improve the utilization rate of resources through scientific and advanced energy-saving and environmental protection technology, so as to reduce the impact on the surrounding environment.
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The use of energy-saving technology in buildings can not only reduce energy consumption, but also improve the environmental protection of buildings, and give consideration to environmental protection while reducing construction costs. Construction companies must also take this point into full consideration, increase research and use of energy-saving and environment-friendly technologies, make use of renewable resources, pay attention to the recycling of energy, and transform nature in construction to ease the pressure of nature, so as to achieve the harmonious and healthy development of man and nature. Based on this, this paper analyzes the key technologies such as energy conservation and protection in the construction of housing construction projects.
文摘Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.
文摘With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples home on which to live cannot be ignored. In the last century, China was in an important period of economic restructuring and strengthening the countrys strength. Industrial development was used to promote the countrys economic construction. Under the extensive industrial development model, the environmental pollution problem became more and more serious, and various air pollution, soil pollution and water pollution problems emerged one after another. With the transformation of Chinas economic system, a sustainable development strategic plan was put forward. The 14th Five-Year Plan even took "double carbon" as an important goal for Chinas future development. Therefore, it is also necessary to strengthen the exploration of the use of ecological environment monitoring technology and environmental protection technology, master the correct way of using the technology, and lay a solid foundation for Chinas ecological environment protection work.
文摘The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemical manufacturing using a large number of chemical materials will produce a large amount of chemical waste in the industrial production process, which has a great impact on environmental protection. Therefore, our country must pay attention to the harm of chemical manufacturing to the environment. Due to the existence of green chemical environmental protection technology, it can reasonably deal with the environmental pollution problems caused by traditional chemical technology, thus effectively improving the environmental protection problems in our country, which is of great significance to the development of our chemical industry. Based on the definition and application direction of green chemical technology, this paper focuses on how to use green chemical technology in practical application and how to improve the effect of green chemical technology, hoping to provide some help for the chemical industry in China to use green environmental protection technology to improve the environment.
文摘With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our province, and its own yield and quality have always been concerned by people. Plant protection technology plays an important role in wheat high-yield cultivation, and can also promote the construction and development of modern agriculture. Therefore, the relevant units should pay more attention to the plant protection technology, have a comprehensive understanding of the specific content and process of the technology, and work out an appropriate technology implementation plan based on the actual situation, so as to improve the effectiveness of the technology operation and further ensure the quality and quantity of wheat production.
文摘With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.
文摘If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial resources to carry out the maintenance, and in the process of maintenance, it is very likely that safety accidents will occur, causing casualties. Therefore, it is necessary to establish an effective lightning protection system for the medium wave radio transmitting station, especially for the positions such as the transmitting power supply, antenna and the antenna dispatching network, so as to ensure that the radio can be broadcast normally in thunderstorm weather.
文摘Slope excavation and protection technology is a frequently used technology in water conservancy and hydropower projects. In the application of slope excavation and protection technology, there are mainly three methods, i.e. anchor supporting method, drilling and blasting method and layered method, etc. Among these three methods, one is the method of hanging sprayed concrete, which is mainly aimed at strengthening the seal of the slope in a deeper level, so as to completely prevent the deterioration of stability caused by weathering. The supporting process of the anchor rod cannot be separated from the anchor rod of the slope, and the key is to reinforce the slope, which is a special and commonly used slope construction technology. The key to the drilling and blasting method in the real construction process is to carry out efficient slope excavation. Based on this process, in the actual operation of drilling and blasting, the two technologies must be carried out in a targeted manner, and in the construction process must be carried out from top to bottom, level by level. In addition, the layered slope excavation and protection technology can effectively improve the flat supporting structure of the slope, thus shortening the construction time and improving the construction efficiency. In addition, when facing the slope rocks with poor geological environment, it is necessary to carry out grouting in the process of excavation to ensure deep support and further improve the safety and stability of the slope. The last step is to further secure the steel strand after grouting to ensure its safety and stability.
文摘1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and technology should be great to the need economic construction and economic construction must rely on science and technology.
文摘The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma treatment technology for the environmental contaminantswas synthetically studied, and the reaction processing and mechanism between the low-pressureplasma and the environmental contaminants were theoretically analyzed. At last, the prospectsand existing problems on the application of low-pressure plasma in the field of environmentalprotection were discussed.
文摘Relay protection in electrical engineering refers to the combination of electronic technology, network technology and control technology to realize the detection of power system faults, scientific and reasonable analysis and treatment of faults, and calculation of transient energy to select the best coincidence time in the system. Therefore, in order to better play the specific role of relay protection in electrical engineering, through the analysis of the working principle of relay protection, this paper explores the important role of relay protection automation technology in electrical engineering and specific application methods, and further analyzes and discusses the relevant maintenance strategies of relay protection automation technology.
文摘Due to the social and economic development, the urban population is increasing and the living space is gradually expanding to high altitude. The International Conference on High-rise Buildings has determined that more than 40 storeys are superstructure. The rapid development of super high-rise building construction in China has promoted the development of construction industry and related industries. The construction of high-rise buildings has a negative impact on the environment in urban areas. The unreasonable scientific design of high-rise buildings results in the waste of energy resources. How to achieve the maximum efficiency with the lowest energy consumption is an urgent problem in the development of high-rise buildings. Scientific design of ultra-high level water supply and drainage system, making full use of green energy-saving technology to protect the environment and save energy are the key links to promote the development of ultra-high level green sanitation in our country.
文摘In recent years, microelectronic components are more widely used in relay protection devices, but most of the electronic devices are electronic sensitive devices, which are easy to be affected by interference. When the relay protection devices are interfered in the power system, if there is a fault, it will affect the overall security of the power grid, resulting in the power grid cannot operate stably. When the interference energy exceeds the maximum allowable energy of the logic circuit, it will directly damage the components and affect the normal operation of the relay protection device. Therefore, strengthening the anti-interference ability of relay protection and automation devices has become an important topic in power system.
基金Huadian International Group Technology Project(172JLC02300248)Research Project on Lightning Protection Technology for 35 kV Collecting Power Line of Wuxuan Qinglan Wind Farm(SFC/WXY-ZX-FW-23-008).
文摘In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment of wind farms was conducted according to the Lightning Protection for Wind Energy System(IEC 61400-24-2019),which proposed the method of lightning strike risk assessment for wind turbine.In fact,the basic idea of the two is the same,that is,the source of the lightning strike wind turbine is transformed from the former S1-S4 to the latter N D-N DJ.According to the above method,wind farm was evaluated,and it has been proved that the practice can not achieve good results.After 2018,China has issued the Guide to Evaluation of Lightning Protection Technology in Buildings(T/GZLY 3-2022)and the Technical Specifications for Lightning Interception in Forest Areas(T/LYCY 4062-2024)based on semicircle protection,in which the source of risk defined by lightning point was closer to the reality,highly targeted and effective.Taking offshore wind farm as an example,this paper introduced a new method of establishing six evaluation indicators to determine the risk level according to the principle of compliance and the new protection technology of semi-circular method,which can be used as a reference for technical personnel.
文摘The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production and operation and maintenance. Overhead transmission lines in the wind farm area are exposed to the natural environment for a long time, which can easily cause lightning strikes to the ground wire and self-supporting angle steel towers. This paper analyzes and studies three common lightning protection technology principles and corresponding specific measures for overhead transmission lines. For a wind farm in Shandong Province, through collecting field data, theoretical calculations and other methods. Finally, a scheme for reducing grounding resistance and optimizing lightning protection design is proposed to ensure the safe operation of transmission line projects in the wind farm and the stability of the power grid.
