Rainfall-induced landslide stability analysis in response to transient pore pressure--A case study of natural terrain la

Transient pore pressure in response to short intense rainfall process plays an important role in shallow landslide occurrence. Using GIS technology, we carry out the rainfall-induced landslide stability analysis in response to transient pore pressure by means of transient and unsaturated rainfall infiltration modeling. A case study is performed on the shallow landslide stability analysis in Hong Kong. Detailed analysis and discussion reached some useful conclusions on the tempo-spatial behavior and characteristics of slope stability response and pore pressure response to typical rainfall process. Comparison analysis is performed on some important issues including landslide stability response in different types of slopes with different hydraulic properties, antecedent rainfall and landslide stability, and the nature of pore pressure response time. These studies might give us an important insight into landslide tringgering mechanism and the hydrological process in response to rainfall, and provide systematic information and evidences for effective risk assessment and warning system establishment.

作 者： LAN Hengxing ZHOU Chenghu C.F.Lee WANG Sijing WU Faquan   作者單位： LAN Hengxing,ZHOU Chenghu(State Key Laboratory of Natural Resources and Environmental System, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

C.F.Lee(Department of Civil Engineering, Hong Kong University, Hong Kong, China)

WANG Sijing,WU Faquan(Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China) 

刊 名： 中國科學E輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES E(TECHNOLOGICAL SCIENCES)  年，卷(期)： 2003 46(z1)  分類號： X4  關鍵詞： rainfall-induced landslide   transient pore pressure   landslide stability in response to rainfall   GIS