长输管道黄土地区环境工程地质问题及对策

The Questions and Countermeasures against the Engineering Geology in Loess Regions of Long Distance Pipeline Projects

黄河中游流域黄土分布面积广,厚度大,存在陷穴、冲沟与河流侵蚀、滑坡、滑塌及崩塌等诸多环境工程地质问题,严重影响着长输油气管道的建设与安全运营。在分析环境工程地质问题形成机理的基础上,提出了相应的防治措施。

The loess.is characterized by the big openings,vertical joints,collapsibility and poor erosion-resistance.In the middle reaches of the Yellow River,the loess distributes widely and thickly,which lead to many problems of environmental engineering geology such as sink holes,gulches,river erosion,landslides,collapse,slumping and so on.These hazards threaten the safety operation of oil and gas pipelines.The analysis on formation mechanism of the loess geology is made and correspondent countermeasures against the loess hazards are proposed in the paper.