NumericalSimulation ofCreep Behavior ofXiakou LandslideUnderDifferent RainfallConditions

ZHANG You-yi; LIU Jun-xin; FENG Tao

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Journal of Railway Engineering Society ›› 2009, Vol. 26 ›› Issue (1) : 23-28.

NumericalSimulation ofCreep Behavior ofXiakou LandslideUnderDifferent RainfallConditions

ZHANG You-yi1,LIU Jun-xin1, FENG Tao2

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Abstract

Research purposes:Themain reason forXiakou landslide located in Yaa' n city of the Sichuan province is rainfal.l For studying the deformation of Xiakou landslide caused by rainfal,l the monitoring systems have been established including the displacement monitoring of surface and subsurface, groundwater monitoring and rainfall monitoring. In this paper, the hydrogeology and engineering geologic conditions ofXiakou Landslide are analyzed, and its deformations in different rainfall are simulated with FLAC software to reveal the deformation characteristics and deformationmechanism of the landslide for the purpose ofproviding the basis for evaluation of the landslide.

Research conclusions:The slope deformation is positively correlatedwith rainfal,l and the largestdisplacementhappens in front edge of the slope, themedium one inmiddle partand the smallone in the rear edge. In the course ofone short and strong rain, the deformation ofslope increased graduallywith the rain. But the deformation still continued to enlarge within 72 hours after the rain stopped, and then it slowly became small afterbecoming the biggest.

Key words

landslide / rain intensity / duration of rainfal / l numerical simulation

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ZHANG You-yi, LIU Jun-xin, FENG Tao. NumericalSimulation ofCreep Behavior ofXiakou LandslideUnderDifferent RainfallConditions[J]. Journal of Railway Engineering Society, 2009, 26(1): 23-28

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