Analysis on Hazardous Geology of Loess Area where Pipeline Passes through and Hazard Rectification

Pipelines of West-east pipeline project will spread along the loess plateau in Northern Shannxi Province and Luliang hilly area in Shanxi Province, which are typical loess areas. On the basis of using the experience of Shannxi-Beijing gas transmission pipeline project in tackling the loess problem, a comparison in geology, geomorphic feature and hazard category between Shannxi-Beijing gas transmission pipeline project and West-east pipeline project that will pass through the loess area has been conducted. The overall design program and suggestion on tackling the loess problem for West-east pipeline project have been worked out. It is pointed out that the hillside protection program that osiers are first planted and then is rolled down should be given priority to the selection in ground restoration and firming newbuilt loess hillside.