西气东输第五标段水土流失特点及防治对策

Characteristic of Soil and Water Loss in the Fifth Segment of the West-to-East Gas Transportation Pipe Engineering and Countermeasures

西气东输管道工程是我国“十五”期间四大重点建设工程之一 ,第五标段线全长 391.9km,途径两省六县 ,线路走向由西向东。沿程地貌类型多变 ,反复穿越铁路、道路、水渠与河流 ,对沿线环境产生一定影响 ,易造成人为水土流失 ,为减少和防治水土流失 ,必须采取水土保持防护措施 ,以保证输气管道的安全运行 。

The west to east gas transportation pipe engineering is one of the four important programs of our country during the 10th Five Years Plan period. The fifth segment, which passes through six counties and two provinces from west to east,is 391.9 km in length. Along the west to east gastransportation pipe engineering, the physiognomy is very complex. There are many railways, highways, aqueducts and rivers that can result in serious influence such as the loss of soil and water on the environment. Measures must be taken to protect the natural environment in order to prevent the loss of soil and water, to improve the environmental quality and to ensure the normal running of the gas pipe.