Kaifeng Bridge Drain Pipe Manufacturer Model and Specification Complete

Description :

　　Kaifeng Bridge Drain Pipe Manufacturer Model and Specification Complete

　　The drainage principle of the drain pipe:

　　In order to control the groundwater level, it is necessary to excavate field drainage ditches with a certain distance and depth. Given the depth of the drainage ditch, in order to meet certain drainage requirements, the smaller the distance of the drainage ditch, the faster the rate of groundwater decline, and the greater the decrease in groundwater level within the required time; The larger the distance between drainage ditches, the slower the groundwater level drops, and the smaller the decrease in groundwater level. When it is required to reach the burial depth Δ H of groundwater within the allowed time, the greater the distance L1 of the drainage ditch, and the greater the depth D1 of the drainage ditch; On the contrary, the depth and distance of the drainage ditch are also smaller.

　　Many cities suffered from serious waterlogging due to rainstorm, and the bright cities in the past suddenly became "water cities", exposing the serious backwardness of some seemingly "modern" cities in urban drainage system planning, design, construction and management. There may be unexpected storms in the sky, but humans can be prepared for them and do their best to prevent them before they happen, reducing losses. Especially in the face of increasingly frequent natural disasters, prevention systems and emergency measures are crucial. However, the serious waterlogging after the rainstorm in various places this year exposed many weak points of domestic cities in terms of prevention and emergency response. The rainstorm is "once every 50 years", but our urban drainage system design standard is only "once every few years", or even "once every year", which is vulnerable. Experts believe that the reasons for waterlogging are, on the one hand, the large area of urban hard land and dense buildings, which reduce the city's self-regulation ability; On the other hand, there are indeed shortcomings in the construction of urban drainage systems. Some residential areas in Guangdong still use the calculation formula of agricultural water conservancy design standards when designing. Obviously, farmland can be submerged in water for a day, while cities cannot be submerged for even a minute. The design standard for drainage systems in Europe and America is "once every 100 or even 300 years", which should serve as a warning for our drainage design. Data shows that Paris, France has established a comprehensive real-time monitoring system for sewer drainage capacity. Even in Saudi Arabia, which is located in the desert, the design and construction of the drainage system did not take any chances, so that it can cope with the extremely heavy rainstorm, which happens once in a century. Japan is more rigorous, and in 1970, it specifically promulgated the "Sewerage Law", which has strict legal provisions on technical indicators and drainage capacity. Whether in disaster prevention or emergency response, the key is to have a sense of crisis. The more fully the sense of crisis is reflected in disaster prevention and emergency plans, the smaller the losses in the event of a disaster. Hardship begins with details. From now on, the department can make statistics on the ponding data of each ponding point in the rainstorm to find out the situation and improve drainage; It is better to investigate and publicize the location of the disaster, and timely release information to help the public avoid danger. In short, this round of large-scale rainstorm requires us to reflect too much.

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