滑坡灾害的机制与力学特性分析

doi:10.13722/j.cnki.jrme.2016.0804

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Abstract Landslide disaster mainly means that the sliding body suddenly produces massive soil sliding. Great sliding force could destroy construction，which would cause great losses. The variable-modulus strength reduction method is adopted to analyze displacement process before landslide sliding. It is found that the displacement of retrogressive landslide is more mutational than displacement of thrust load-caused landslide. The retrogressive landslide causes landslide disaster much easier. In contrast，thrust load-caused landslide has obvious warning displacement；therefore，the concept of plastic slope is proposed. Plastic slope can avoid or reduce landslide disaster. In addition，analysis results of calculation examples show that in retrogressive landslide or when the stress level in different part of sliding surface is very different，safety factor by the traditional limit equilibrium method has risk of overestimation. The above conclusions would give new research ideas to avoid or reduce landslide disaster.

Key words： slope engineering landslide stress level displacement variable-modulus strength reduction method plastic slope

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	Articles by authors
	YANG Guanghua1
	2
	3
	ZHONG Zhihui1
	3
	4
	ZHANG Yucheng1
	2
	FU Xudong3

Cite this article:

YANG Guanghua1,2,3, et al. Analysis of mechanism and mechanical characteristics of landslide disaster[J]. , 2016, 35(S2): 4009-4017.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0804 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/4009

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