基于离心模型试验的武隆鸡尾山滑坡形成机制研究

doi:10.13722/j.cnki.jrme.2014.1582

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Abstract The formation and evolution process of Jiweishan landslide in Wulong as for typical apparent dip slid landslide was studied by using the centrifuge modeling test. The test model with the relevant instruments and equipment which includes the base，karst zone and the sliding body of the geomechanical model were made by barite powder，quartz sand，gypsum，glycerin，cement and water in certain proportion，and then the centrifugal test was operated according to the relevant rules. The test results show that the front karst zone“easy compression”provide the“quasi free surface”effect for the slope creep，and lead to the“soft base effects”failure mode. The premise of the landslide instability is forming the second fracture face，which reproduce“creep-crack-compressive (crushing)-shear”the disaster-causing mechanism of Jiweishan landslide. It turned out that the karst zone“easy compression”is one of the key conditions for the evolution of the slope，and also the centrifuge modeling test is an effective method to study rock landslide.

Key words： slope engineering centrifuge modeling test easy compression zone soft base effect quasi-free surface formation mechanism

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	DENG Maolin1
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	XU Qiang1
	ZHENG Guang1
	DONG Xiujun1

Cite this article:

DENG Maolin1,2,3, et al. Study on the formation mechanism of Jiweishan landslide in Wulong，Chongqing，China-based on centrifugal model test[J]. , 2016, 35(S1): 3024-3035.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1582 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS1/3024

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