长-呼原油管道地质灾害分布特征及风险评价

摘要

Based on the investigation of geological disasters along the outside pipeline of the crude oil pipeline of Changqing Oilfield to Hohehot refinery station ,Types of the disaster have water erosion (water erosion of river course、water erosion of flat land、water erosion of slope)、wind erosion and sand buried、ground subsi-dence.Topography is the main factor of the spatial distribution of geological disasters along the pipeline.On the basis of field investigation data of geological hazard along the pipeline ,through the macroscopic analysis and qualitative judgment,to the risk assessment of geological hazards along,Results show that the 349 points of geological disasters along the outside pipeline of the Chang-Hu crude oil pipeline ,the geological disaster risk level to a high have 54 points,accounting for 15.47% of the total,medium,there are 151,accounting for 43.27%,low,there are 88,accounting for 25.21%,lower,there are 56,accounting for 16.05%.It put forward the control countermeasure of different types of geological disasters.%对长庆油田-呼和浩特炼油站原油管道外输管道沿线地质灾害的调查研究表明，地质灾害主要有水毁（包括河沟道水毁、台田地水毁、坡面水毁）、风蚀沙埋和地面沉降三种类型。地形地貌是影响管道沿线地质灾害空间分布的主要因素。以野外地质灾害调查资料为基础，通过宏观分析与定性判断，对沿线地质灾害进行了风险评价，结果表明：长呼线管道沿线发现的349处地质灾害点中，地质灾害风险等级为较高的有54处，占15.47%、中等的有151处，占43.27%、较低的有88处，占25.21%、低的有56处，占16.05%。提出了不同类型地质灾害的防治对策。