河沟谷区管道敷设方式和地质灾害的关系探析

RELATIONSHIP BETWEEN PIPE LAYING AND GEO-HAZARDS IN RAVINES AND RIVER VALLEYS

随着涩宁兰管道投产,沿管道地质灾害酿成人员伤亡、财产损失和环境污染等灾难也逐步凸显。在河沟谷区,地质灾害发育密度高,对管道的威胁较大,灾害后果较为严重。介绍交切和平行管道敷设方式。通过对野外调查数据的分析,发现交切敷设的管道地质灾害的发育密度和风险等级远远大于平行敷设的管道。单从风险控制角度来说,油气长输管道在类似自然环境中选线时,建议以平行河沟谷敷设为主,且尽量考虑沿谷缘山梁带敷设穿越。

The Sehei-Xining-Lanzhou pipeline has increasingly brought to people along the pipeline disasters like casualties, property damages and environmental pollution since it was put into operation. Geological disasters occur more frequently in ravines and river valleys, posing greater threat to the pipelines, thus bringing severe disasters. Valley-crossing and valley-paralleling pipeline installations are introduced. The analysis of field survey data shows that the disaster frequency and the risk scale of valley-crossing installation far outweigh those of valley-paralleling installation. For risk reduction, valley-paralleling pipe laying along the edge of the ravines and valleys should be a priority.