Drainage method, that is, drainage gas collection method, is a method of collecting gas in experimental chemistry. This method is used when the gas does not react with water and is not easily soluble in water.
1, drainage method, that is, drainage gas collection method, is a method of collecting gas in experimental chemistry. Drainage ditch refers to the ditch that leads the water collected in the side ditch, intercepting ditch and low-lying place near subgrade, crop field and house to the outside of subgrade, crop field and residential land. According to the engineering layout and engineering standards of the drainage system, the depth and spacing of the drainage ditches on site are determined, and the flow, water level, section size and engineering quantity of the drainage ditches and buildings at all levels are analyzed and calculated.
2. Drainage method is a method to eliminate excess surface water and groundwater in farmland through artificial measures. Drainage facilities should be adapted to local conditions, comprehensively planned, rationally distributed, comprehensively managed, practical and economical, and make full use of favorable terrain and natural water system.
3. Drainage can protect crops from waterlogging, improve soil aeration, regulate soil temperature and promote organic matter to release nutrients. Drainage ditches are generally arranged at both ends or lower ends of slope intercepting ditches to exclude surface runoff that intercepting ditches cannot accommodate. The end of the drainage ditch is connected with the reservoir or natural drainage ditch.
Use of drainage method
1, farmland drainage: farmland drainage is one of the main applications of drainage methods. Reasonable drainage system can control the moisture content in soil, improve soil aeration, improve soil quality and promote crop growth and development. Drainage can reduce soil moisture, prevent water accumulation in farmland, reduce the occurrence of pests and diseases during crop growth, and improve crop yield and quality.
2. Building and urban drainage: In the field of cities and buildings, drainage method is used to treat rainwater and wastewater. By establishing drainage systems and facilities, such as drainage networks and sewage treatment plants, rainwater and wastewater in cities can be collected and discharged, and the normal operation of urban infrastructure can be maintained. Drainage methods are also helpful to flood control and reduce the pressure of urban drainage system to ensure the safety of urban flood control.
3. Drainage of underground works: Underground works, such as tunnels, subways and basements, often need drainage treatment. Drainage method can effectively control the groundwater level and prevent underground engineering from being flooded and waterlogged. Through reasonable drainage design and facilities, the stability and safe operation of underground engineering can be maintained.
4. Water resources management: Drainage method also plays an important role in water resources management. Collect, store and manage water resources through reasonable drainage system and technical means, improve the utilization efficiency of water resources and reduce the waste and pollution of water resources.
5. Environmental protection: Drainage method contributes to environmental protection and ecological restoration. By treating and purifying wastewater and reducing the discharge of pollutants, water quality can be improved and the health of aquatic ecosystem can be protected. Drainage method can also reduce environmental problems such as soil erosion and maintain ecological balance.
In a word, drainage method is widely used in farmland, buildings, cities, underground engineering, water resources management and environmental protection. Through reasonable drainage design and management, the problems of soil over-wetting, flooding and drainage can be solved, soil quality and ecological environment can be improved, and the normal operation and sustainable development of various fields can be ensured.