考虑平动–转动力学效应的露天矿山节理岩质边坡塑性极限分析

doi:10.13722/j.cnki.jrme.2018.0958

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Abstract

The failure of open-pit mine jointed rock slope generally includes translational and rotational mechanical effects. The stability of jointed rock slope with sliding and toppling failure is studied，by combining plastic limit analysis theory，discrete technique of rigid block element with multiple degrees of freedom，the principle of pseudo-static method and mathematical programming method. The seismic inertia forces of elements are calculated according to the pseudo-static method. After that，taking internal force vector(normal force，shear force and bending moment) of interfaces as decision variables，the static admissible stress fields of jointed rock slope are constructed，and the mathematical programming model of lower bound method for jointed rock slope stability analysis is established. At the same time，taking the translational velocity and rotational velocity of element centroid as decision variables，the kinematically admissible velocity fields of jointed rock slope are constructed，and the mathematical programming model of upper bound method for jointed rock slope stability analysis is established. Lastly，the optimization algorithm are employed to solve these two models，and the upper and lower bound solution of the safety factor and corresponding failure mechanisms of jointed rock slopes can be obtained.

Key words： slope engineering jointed rock slope stability rigid block element plastic limit analysis pseudo-static method slope engineering jointed rock slope stability rigid block element plastic limit analysis pseudo-static method

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	Articles by authors
	LI Ze1
	HU Zheng1
	LIU Wenlian1
	2
	HU Gaojian4
	DU Shigui3
	4
	ZHOU Yu5

Cite this article:

LI Ze1,HU Zheng1,LIU Wenlian1, et al. Plastic limit analysis of open-pit mine jointed rock slope considering translation-rotation mechanisms[J]. , 2018, 37(S2): 4056-4068.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.0958 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/IS2/4056

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