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《Journal of Chongqing Institute of Technology(Natural Science)》 2008-07
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Local Stability Analysis of Expansive Soil Slope Based on Limit Equilibrium Theory

LI Ke-shi,WANG Li-juan,WEI Bing-xu(Changsha University of Science & Technology,Changsha 410076,China)  
Based on the limit equilibrium theory and the actual situation of expansive soil slope cutting destruction of Nan You Road,reasonable assumption of the slippery surface shape and intensity parameters of the cutting slope is made, local shallow slope stability of the expansive soil slope is analyzed with the impact of the slope of lumbar fracture and depth considered.Analysis shows that the cause for shallow slope damage is mainly that the lumbar slope of the first part of the soil becomes instable and leads to the upper soil loss in traction and support,and it also shows that local loss of stability is most likely to happen in the cut sloping zone of about 2 meters.
【Fund】: 交通部西部交通建设科研项目(200231800015)
【CateGory Index】: TU443
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