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《Chinese Journal of Underground Space and Engineering》 2012-03
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Mechanism Analysis about Load-unload Response Ratio Theory in Prediction of Landside

Tang Chunlong(China Coal Technology & Engineering Group,Chongqing Design & Research Institute,Chongqing 400016,China)  
LURR(Load Unload Response Ratio) is a new method of landslide prediction which is based on nonlinear theory,but at current few studies have been done about groundwater as a load-unload dynamic factor affecting the landslide.A typical rainfall landslide has been studied in this paper,the deformation law and mechanism of landslide due to water seepage,pore pressure,suction and soil moisture effect are analyzed by using numerical analysis software.The study shows that hydrostatic pressure caused by groundwater rising and horizontal hydrodynamic pressure caused by seeping are the main groundwater load-unload dynamics factors of landslide.So the hydrostatic pressure and hydrodynamic pressure are expressed as the total suction head,which is considered as a dynamic parameter of load-unload response ratio,and it provides a good idea and evidence to load-unload response ratio model based on groundwater effect.
【CateGory Index】: P642.22
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