Abstract:
Based on the investigation and study on the development characteristics of geological disasters in Linqu section of Tai-Qing-Wei natural gas pipeline, the authors in this paper have identified the major type of geological disasters in Linqu section, which is water damage disaster. And it can be divided into three types: slope surface water damage, channel water damage and platform field water damage. During the field investigation of geological disasters, 15 geological disasters were found along the pipeline in Linqu section, including 6 water damage points of slope surface, 4 water damage points of channel and 5 water damage points of platform field. The risk of geological disasters was evaluated by the qualitative and semi-quantitative methods. The results show that there is one section with medium high risk level, accounting for 6.66% and four sections with medium risk level, accounting for 26.67%, ten sections with medium low risk level, accounting for 66.67%. According to the landform, development density and risk level of geological disasters along the pipeline, the medium and low risk areas are 61 km and 10 km respectively, and along the pipeline, there are mainly medium risk areas. According to the different types and risk levels of geological disasters, the corresponding prevention and reduction measures are put forward, which provides an effective technical basis for the safe operation of the pipeline and risk management decision-making about it.