摘要
现今对滑坡的研究过程中大多没有考虑坡体之上的裂隙,然而裂隙对降雨型滑坡所起的作用尤为重要。某公路滑坡坡体之上存在大量裂隙,为研究其在降雨过程中渗流及稳定性变化规律,运用有限单元法分别模拟有裂隙和无裂隙时坡体内瞬态渗流场变化、稳定性随降雨历时的变化情况。结果表明:在研究含裂隙滑坡降雨入渗过程中,考虑裂隙时的计算结果与现场观测结果更一致,考虑裂隙对滑坡稳定性的影响十分必要。
Currently, fractures on slope mass are not taken into consideration in most course of landslide study; however, they play an important role in the effect on rainfall-induced landslide. With regard to a large amount of fractures exited on a highway landslide, to study its seepage and stability change rule during rainfall, finite element method was used to simulate the change of transient seepage field inside the landslide with or without fractures and the change of stability as rain falls. The results show that, in the course of studying rainfall infiltration against fractured landslide, the result calculated with fractures considered is more consistent with that observed on the site, thus it is necessary to take account of the effect of fractures on landslide stability.
出处
《路基工程》
2016年第5期212-216,共5页
Subgrade Engineering
关键词
滑坡
裂隙
降雨入渗
非饱和土体
稳定性分析
landslide
fracture
rainfall infiltration
unsaturated soil
stability analysis
