福宁高速公路八尺门滑坡成因与整治对策

Causes and Treatment Measures of Bachimen Landslide along Fuzhou-Ningde Expressway

在分析福宁高速公路八尺门滑坡区的地质环境条件的基础上,阐述了滑坡的变形特征、性质、变形机制,并探讨了滑坡的成因。认为在大型堆积层古滑坡场地,地质环境背景的脆弱是触发古滑坡复活变形和破坏的主要原因,而路堑开挖以及长时间的持续降雨是主要诱发因素。经滑坡稳定性分析和针对滑坡病害特征,确定了四个滑坡体的主要整治措施。滑坡监测和试验结果显示,整治后滑坡处于稳定状态。

Based on analyzing the geological conditions of Bachimen landslide area along Fuzhou-Ningde Expressway, the deformation behavior, characteristics and mechanism of landslide are described and the causes of landslide are discussed in this paper. It is considered that for ancient slide site in large accumulative formation, fragile geological condition is the main cause of ancient landslide revivification, deformation and failure, and excavation and long-term continuous rainfall are the main inducing factors. Through landslide stability analysis, the main treatment measures for four landslide masses are determined according to landslide disease characteristics. Monitoring and test result shows that landslide is under stable condition after treatment.