Study Of Clastic Rock Landslide Monitoring And Stability In Southeast Area Of Guangxi

Slope monitoring and stability evaluation has been a hot topic in geotechnical engineering application and theory research.In the south of China,the slope rock mass makes it's unique engineering properties from the hot and humid environment the hot and humid environment.In the southeast of Guangxi Province,the continuous rainfall,human activities and the complex geological structure of the slope are easy to induce the slope failure of the clastic rocks,and often result in a large number of casualties and property losses.Clastic rocks are widely distributed in South China,its rock composition is very complex,especially the weathering layer of higher degree and fractured zone,weak interlayer which has properties and characteristics of high compression,large porosity,water easily softened.With the development of economy and urbanization,the clastic rocks not only become the key research object of various types of construction,but also is one of the most serious geological disaster areas under the effect of atmospheric environment,therefore,research on monitoring and evaluation on the stability of clastic rock slope becomes more and more important.Through exploring and surveying the Cenxi clastic rock landslide and landslide exploration field geological at the junction of Guangxi Wuzhou city and Yulin city,building test platform for monitoring,analyzing the inclinometer deformation monitoring curve,establishing the relationship between the sliding deformation and deformation curve shape,forming the time cumulative amount of surface displacement curve,mobile rate-time curve,acceleration time relationship curve and monthly rainfall time curve,and analyzing the relationship between the cumulative displacement and moving speed,mobile acceleration and monthly rainfall,which thesis will establish a warning and prospecting system from qualitative analysis to quantitative prediction of landslide.According to physical mechanical test carried by scanning electron microscopy,experimental rock slices identification test,direct shear test and other modern test methods,analyzing the slope in different strata of clastic rock physical,mechanical properties and mineralogical characteristics,we find the differences among different layers of rock and soil mass in the mineral composition,particle physics and mechanics the size,density,pore size and structure of rock mass,the structure and content of clay mineral properties and microstructure,resulted in the different engineering properties.To get the rock and soil mass' s safety factor under the saturation condition,it selects the test data of the actual situation as parameters,and uses the SLOPE/W module inGeoStudio2007.Based on the previous monitoring results to evaluate the stability of the slope,build the southeastern Guangxi clastic rock slope stability evaluation system by slope monitoring-physical and mechanical tests-stability analysis and evaluation.