“西油东送”工程甘肃段水土流失防治研究

Soil and Water Loss Control Along Gansu Pipeline in West to East Petroleum Transportation Project

中国石油西部成品油管道是目前国内运输距离最长的输油管道之一。管道铺设过程中,大量采用机械施工,路堑开挖,路堤填筑,取土采石和架桥砌涵等,破坏了公路沿线原生地貌及植被,扰动了表土结构,致使土体抗蚀能力降低。在总结工程区自然情况基础上,分析了"西油东送"工程甘肃段的水土流失问题和其对生态环境的影响。结果认为管道工程防护类型必须坚持"三同时"原则,并应该采取如下防治方针:(1)综合治理与综合开发相结合;(2)科学配置防治措施;(3)防止新的水土流失发生。

The western pipeline of PetroChina has,at present,the longest transportation distance among the petroleum pipelines in China.Because the pipeline was paved mechanically,original landform,top soil and vegetation were destroyed,which reduced soil anti-erodibility and caused soil and water loss.The natural situation was firstly summarized and then,soil and water loss and its impacts on ecological environment were analyzed for the pipeline in Gansu Province.The ＂three synchronous steps＂ principle must be insisted on.In addition,the measures should be taken according to the following policies,such as the combination of comprehensive control with comprehensive exploitation,scientific allocation of control measures,and prevention of soil erosion newly occurred.