Research On Stability Analysis And Engineering Treatment Of Fei Ngo Shan Landslide

Southwest slope of Fei Ngo Shan in Shunde District,Foshan City,Guangdong Province,is a geological hazard danger point.It is on a blacklist of landslide controlling.There were some landslides.Without controlling,it could happen again,which would triggered the threatening to life and property.While working on the Fei Ngo Shan landslide control project,following research will be carried out in this paper:(1)Summarize the survey data of landslide,analyze the spatial distribution of Fei Ngo Shan landslide.(2)Through the field investigation,drilling,monitoring and geophysical exploration and other method to determine the slip surface,combined with the rock soil media mechanic around the slip surface to determine the cause of landslide mechanism.(3)According to the mechanism of the landslide,the slope stability under different conditions is analyzed and calculated by the rigid-body limit equilibrium method.And the slope stability is also simulated and analyzed by the numerical analysis software,to verify the accuracy of the limit equilibrium method as well as to enhance the stability analysis of reliability and accuracy.(4)Based on the results of stability analysis,two practical landslide treatment schemes are selected and the detailed comparison is made.Finally,the governing plan is determined,which includes Slope cutting,anchor rod,latticed girder,Anti-slide pile,3-D mat planting grass,drainage,rock wool retaining wall.(5)It is verified by numerical analysis that after following the governing plan,the stability coefficient of the slope under the special environment is met the requirements.In the research of the Fei Ngo Shan landslide treatment project,the simulation and numerical analysis of the finite element software are superimposed on the traditional stability calculation of geotechnical soils.It could validates the accuracy of the limit equilibrium method and greatly enhance the stability analysis of reliability and accuracy.