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《Journal of Engineering Geology》 2007-01
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ZHOU Xinmin~(①)XIA Tangdai~(①)PENG Jianbing~(②)(①Institute of Geotechnical Engineering,Zhejiang University,Hangzhou 310027)(②Geology Engineering and Survey Engineering Institute,Chang′an University,Xi′an710054)  
To analyze the expansion of the cylindrical cavity in loess,a reasonable numerical model was presented based on field investigation.The potential function theory and Laplace transform technique wwere used to solve the problem.The analytical solution of stresses,pore pressure and displacement induced by inner water pressure were derived in Laplace transform domain.Numerical results were obtained by inverse Laplace transformation.The effects of rainfall duration and saturation on dynamic response of the cavity were discussed.It shows that the hydrodynamic force is the key factor of the cavity expansion in loess.The rainfall duration has great effects on the stress and displacement. The influence of saturation on displacements is remarkable.
【Fund】: 交通部西部重点交通建设科技攻关项目(200131881213)
【CateGory Index】: S152.7
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