基于层次分析法的某线状工程地裂缝危险性评价

Hazard Assessment on Ground Fissures for a Proposed Linear Project Based on Analytic Hierarchy Process(AHP) Method

研究目的:通过对拟建工程沿线地裂缝发育影响因素的分析,确定工程沿线地裂缝发育的主要影响因子,建立沿线地裂缝危险性评价模型,计算地裂缝危险性指数,并进行危险性分区;以评价工程沿线地裂缝发育的危险性,指导工程的勘察设计。研究结论:根据危险性指数,按危险性大小将拟建工程沿线地裂缝发育的危险性划分为大、中、小三个区。结果表明,现场确定的孙河、北甸、庙卷3处地裂缝均发育在地裂缝危险性大区,评价结果与实际较吻合,并有效指导了该工程的勘察设计。

Research purposes： Based on the analysis of factors effecting the ground fissure development along the line of a proposed project,the main affecting factors of ground fissure development were determined and the hazard assessment model was established for the ground fissure to calculate the hazard index of the ground fissure and sort the hazard areas for assessing the occurrence hazard of the ground fissures along the line of a proposed project and guiding the survey and design of the project. Research conclusions：In accordance with the hazard index of groud fissure and the hazard level,the harzard of the ground fissures along the line of the project was divided into three types,namely the high,medium and low risk zones.It was concluded in the field that the ground fissures at Beidian,Sunhe and Miaojuan were developed in the high risk zones.The assessment result fit the actual situation and it effectively guided the survey and design of the project.