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Cases and Inspirations of Pipeline Damages Due to Geohazard in China in Recent Years
( Qinglu Deng ),( Xueping Wang ),( Chaoqun Wei ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
In past few years, a number of serious pipelines failures occurred in China due to the geological disasters. Five geological disasters induced pipeline events are presented, including the explosion accident of Sino-Myanmar gas pipeline in Qinglong county of Guizhou province in June 10, 2018. This paper briefly introduces the characteristics, forming conditions and inducing factors of geological hazards in each accident sites, analyzes the causes of pipeline damage, and summarizes the understanding and lessons, with a view to providing some enlightenment for pipeline geological hazard management in the future. The main understandings include that the human activities are the main factors leading to geological disasters, and four of the five cases related to landfills. Therefore, in the daily management of pipelines, it is necessary to pay much attention to and prevent large-scale engineering activities near the pipeline. The case that the landslide led to a pipeline failure in new Guangming district, Shenzhen, is a reminder that the pipeline in the path of landslide movement is also needed appropriate protection. The identification of geological disasters in the early stage is both important and feasible. In these cases, at least three disaster sites in Shenzhen, Pingxiang and Qinshui have obvious signs of early deformation. The conception of risk acceptability should be advocated in pipeline safety management. The risk of pipeline geological disasters cannot be completely eliminated, but the risk loss can be minimized by improving the emergency plans and other measures.