| China’s sustained and rapid economic growth brings the fast increase of the demand for oil and natural gas, China has become the second largest oil consumption country in the world, after the United States, also promoting the construction and development of China’s oil and natural gas pipeline. The oil and gas pipeline is safe, stable and economic, also beneficial to reducing the transportation pressure on rail and road. The long-distance pipeline is a part of the Life Line in national economy. The impact of geological hazards for the oil and gas pipelines are multiple and comprehensive. Once the pipeline accident is occurred, it not only brings the economic loss of gas leakage, but also causes significant consequences of heavy casualties and environmental pollution, even more affect the economic development of our country.This paper elucidated the environmental conditions of geological hazard, identified the type, distribution, size and formation mechanism of the geological hazard, analyzed the perniciousness and mode of the geological hazard to the pipelines, by systematical investigation and research on the geological hazard of Sebei-Xining-Lanzhou gas pipeline project in loess area. The article described in detail the typical geological hazard of landslide, collapse, collapsibility of loess, loess gully and river erosion, by describing the type, distribution of the scope and scale of geological hazard of Sebei-Xining-Lanzhou gas pipeline project in loess area, explained the perniciousness and manner of the geological hazard to the pipelines, proposes a feasible and effective engineering protective measures, and as some references for geological hazards control in loess area. |
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