Landslide Stability Analysis And Automated Monitoring System Construction On Renjiacheng Loess Slope

This thesis regards the Renjiacheng loess slope as research object by collecting a largenumber of related geological materials contribute to the analysis on the formation background,the deformation characteristics and the development trend of this landslide, lead by the LimitTheory and Numerical Simulation Methods to study the stability of the loess slope. Indetermining the range of influence and the harm of the loess slope, risk classification of thisarea has been created, combined with the deformation and failure characteristics ofRenjiacheng loess slope. The Renjiacheng loess slope monitoring system has beensuccessfully established based on the present deformation by carrying out the feasiblemonitoring program. The specific contents are as follows:1. Renjiacheng loess slope mainly consists of quaternary loess, loess slope from top44m, out of the sand layer, formed by alluvial, the slope by WeiShui waters and the combinationof the qinling mountains.Slope surface fluctuation, local slope above70degrees, protrudingslope of soil body, form the dangerous rock body, highly stable, easy to form a small edgecollapse.2. Using Sigma/w module of Geo-studio software to simulate the internal stress andstrain of slope, slope analysis indicated that horizontal stress and maximum shear stress in theformation interface obvious stress wave, shear stress concentration in the slope foot, directionof slope displacement tends to Slope/w module to Sigma/w calculated stress-strainrelationship as the foundation, to determine the stability of the Slope coefficient number1.21,a stable state, the overall instability probability is low.3. The position of crack and deep impact on slope stability.Crack from the closer movecomputing potential side slope surface, the deeper the crack depth, the greater the impact onthe slope stability.4. Through LS_RAPID three-dimensional slope movement simulation software, theanalysis of dangerous rock mass on the slope body boundary moving distance and range,determine the typical slope village, the affected area of2472m2, including12,14, andfarmers orchard2are in high risk areas.Farmers2,15and21in the danger zone,8,9and17farmers in the danger zone.5. Through the analysis of the slope monitoring data, it shows that affect water contentof slope rainfall depth is limited, and with a lag.GPS absolute displacement, relativedisplacement were no significant changes continuously, the slope is in steady state.