Study On The Landslide Characteristics And Regulation Engineering Effect Analysis Of No.1 Slide In Qian-long Section Of Chuan-zang Road

The No.1 landslide between Qiandiaoqiao and Longdanxi in Sichuan-Tibet highway is a multigrade,multi-ship surface broken rock insequent landslide,which is a type of huge push-type landslide composed of mudstone,calcareous mudstone of the Silurian.It is significance of analyzing this landslide.This thesis mainly analyzes the geological characteristics and influencing factors to explore the mechanism of this landslide and its inducing factors.On the basis of these,expounding the treatment measurements and discussing whether the specific treatment measurements do solve or reduce the detect of this landslide,then mastering a set of landslide treatment analytical system which involves investigation,design,treatment measurement and effect evaluation,for future similar treatment and effect evaluation of large complex landslide analysis for reference.This thesis analyzes the landslide stability before and after treatment,adopts thelimit equilibrium method and numerical simulation method to analyze the stability in different depth of slide zones under four conditions.The results illustrate the necessity of landslide treatment and different stability statement before and after treatment.This thesis also expounds the specific engineering measurements for landslide treatment as the basis of the analysis of landslide treatment evaluation.The analysis of landslide treatment effect measurements adopts field monitoring data analysis,macroscopic deformation analysis and numerical simulation analysis by GeoStudio.The field monitoring data analysis is mainly adopted in analyze theanti-slide pile with prestressed cable and drainage measures.And the macroscopic deformation analysis and numerical simulation analysis by GeoStudio are mainly adopted in analyzing the landslide stability change before and after treatment under different conditions like heavy rain,earthquake and so on for the analysis of working statement of different engineering projects and exploration of landslide treatment evaluation.