Investigation And Study On The Geological Hazard Of Collapse And Landslidein The Yuankou River Basin,Yuexi County Zhubutown

With the development of economy,the frequency and scale of the disasterstend to be increased year by year.There are frequent geological disasters in anhui province,especially in the area of Dabiemountains Yuexi county,which is owing to strongly terrain cutting,steep high mountain,the development of stratfied rock,flake rock,weathered rock and plentiful rainfall.Therefore,collapse,landslide and soil erosion are serious,which pose a serious threat to the lives of local residents and the safety of state property.How to effectively predict the occurrence time and location of geological disasters and the urgent problems in the field of hydraulic ring engineering are urgently needed to be solved.In this paper,the northwest of Yuexi County registrar town that geological disaster prone areas for the target area,on the basis of collecting the geological data in the past,applys interpretation of remote sensing,ground survey,misering and geophysical prospecting to carry out the research on collapse,high steep slope and typical slope system,finding out the situation of geological hazard(hidden)spots,evaluating the stability,predicting the trendcy,analyze inducing factors,formation mechanism,distribution law,and structural characteristics under different working conditions,puting forward the prenvention and control suggestions.The main results and conclusions are as follows:(1)The geological environment conditions of the work area were identified,and the characteristic zoning of the weathered layer was carried out.Working area are mainly monzogranite and granodiorite,with fissures,strong weathering resistance,mechanical properties including compressive and shear strengths in general.(2)The characteristics and distribution laws of geological disasters have been found out.There are 22 geological hazard(hidden)spots in the area,small,and disaster level are in general,identfying high-angle invisible structural planes is an important cause of collapse and landslides.(3)The present situation of geological hazards in the work area is analyzed,and suggestions for disaster prevention are put forward.There are 10 geological hazard spots in the area,most of them are poor in stability,and the danger grades are general.Suggestions for disaster prevention are put forward,including group inspection,group prevention,monitoring,relocation,collision avoidance and engineering management.(4)The characteristics of high steep slope in the working area are clarified,and the prevention and control suggestions are put forward.Comparison of landslide hazard characteristics,proposed cutting slope height to less than 10 m is appropriate,cutting slope to less than 40 degrees is appropriate,if the conditions do not allow advice take steps or set the retaining wall,and housing and cut slope distance;cut slope position to choose a stable mountain side,not easy error due to excavation select the weak zone.