当前运用非饱和渗流理论对堆积层这一类滑坡失稳机制研究不多。以三峡库区某堆积层滑坡为例,基于非饱和渗流理论,对库水位下降过程中地下水对滑坡作用规律进行了数值模拟分析,结果表明,库水位下降过程中形成的超孔隙水压力和水平向渗流产生的动水压力是滑坡变形失稳的主要因素。%The research on failure mechanism of colluvial landslide with unsaturated seepage theory is seldom at present.Taking colluvial landslide in Three Gorges Reservoir as the example and depending on unsaturated seepage theory,numerical analog analysis is carried out against the discipline of groundwater acting on landslide during the drop of water level in the Reservoir.The result shows that the excess pore water pressure formed during this course and the hydrodynamic pressure resulted from horizontal seepage are the main factors causing landslide deformation and failure.
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