降雨诱发堆积层滑坡失稳的位移动力评价预测模型研究

doi:10.13722/j.cnki.jrme.2014.1010

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Abstract On the basis of systematic analysis of the change rule of displacement and rainfall and their interaction relations，this article first proposes that the increment of rainfall and displacement velocity or acceleration can be respectively taken as loading dynamic parameter and displacement response parameter，so as to establish the displacement response ratio of dynamics increment evaluation parameter and its prediction model by means of elastic-plastic theory and damage mechanics. In addition，according to the quantitative relation between the damage variable parameter of damage mechanics and the displacement response ratio of dynamics increment，the dynamic displacement destabilized criterion for this kind landslide is established. Finally，taking the typical colluvial landslide induced by rainfall in the Three Gorges Reservoir Area as an example，the continuous rainfall increasing process and its displacement response characteristics are analyzed and evaluated systematically by means of the displacement response ratio of dynamics increment model and find that the values of displacement response ratio of dynamics increment have an abrupt jump just before landslide took place，which demonstrates that the abrupt jump time agrees with the destabilized time of the landslide. The research results show that the displacement response ratio of dynamics increment is an effective dynamics displacement appraisal parameter of rainfall，so it can be used in the prediction of the landslide induced by rainfall.

Key words： slope engineering colluvial landslide induced by rainfall displacement response ratio of dynamics increment evaluation model stability criterion Xintan landslide

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	Articles by authors
	HE Keqiang
	GUO Lu
	CHEN Weigong

Cite this article:

HE Keqiang,GUO Lu,CHEN Weigong. RESEARCH ON DISPLACEMENT DYNAMIC EVALUATION AND FORECAST MODEL OF COLLUVIAL LANDSLIDES INDUCED BY RAINFALL[J]. , 2015, 34(S2): 4204-4215.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1010 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4204

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