基于UDEC的岩质边坡开挖爆破节点拟静力稳定性计算方法

doi:10.13722/j.cnki.jrme.2014.s2.068

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Abstract A node quasi-static method to calculate the safety factor of rock slopes under blasting case is given. Potential sliding surface slope position，failure mode and safety factor of slopes undertaking the blasting loads can be obtained by the node quasi-static method. The node quasi-static method consists of three parts. Firstly，secondary development on UDEC4.0 is conducted based on the FISH language embedded in UDEC4.0，and the calculation program considering the attenuation law of blasting vibration peak acceleration with blast center distance and elevation difference is written. Secondly，strength reduction calculation program is written based on the basic principles of strength reduction. Finally，choosing the discrimination method for slope critical state，and a new slope failure criterion that utilizes the maximum node displacement duration curve to determine the slope critical state is proposed in this paper. Through comparing with the calculation results obtained by UDEC system procedure，the correctness and feasibility of the node quasi-static method is verified. Finally，the node quasi-static method is applied to the blasting design and stability evaluation of Yunfu pyrite open-pit slope.

Key words： slope engineering node quasi-static method time history method equivalent static load strength reduction method slope failure criterion

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	Articles by authors
	ZHENG Yun1
	CHEN Congxin1
	ZHU Xixi1
	PAN Zhengyi2
	OU Zhe1
	ZHOU Yichao1
	XIA Tianyou1

Cite this article:

ZHENG Yun1,CHEN Congxin1,ZHU Xixi1, et al. NODE QUASI-STATIC STABILITY ANALYSIS OF ROCK SLOPE UNDER EXCAVATION BLASTING BASED ON UDEC[J]. , 2014, 33(S2): 3932-3940.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.068 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3932

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