基于CASRock的工程岩体动力响应分析方法、软件与应用

doi:10.19952/j.cnki.2096-5052.2021.03.01

Hazard Control in Tunnelling and Underground Engineering

2021, Vol. 3

Issue (3): 1-10 DOI: 10.19952/j.cnki.2096-5052.2021.03.01

Research Article

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Dynamic response analysis method, software and applications in engineering rockmass based on CASRock

PAN Pengzhi¹, MEI Wanquan²

1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China;
2.School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China

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Abstract Aiming at the localized characteristics of engineering rock mass failure, the local updating rule was established for dynamic analysis of engineering rock mass by using cellular automata technique on spatial scale and Newmark integration method on time scale, respectively. Based on a self-developed cellular automata software for engineering rockmass fracturing process(CASRock), the dynamic version, i.e. CASRock.Dyna was developed. Investigating the propagationof elastic waves in the rock mass, the stress wave propagation obtained by CASRock.Dyna was consistent with the analytical results, which verifies the feasibility of CASRock.Dyna for elastic dynamic analysis. The elasto-plastic results obtained by CASRock.Dyna were consistent with the counterparts obtained by the boundary element method, which demonstrated the ability of CASRock.Dyna for non-linear dynamic analysis. Dynamic analysis of rock mass subjected to destress blasting and blasting disturbance was conducted to explore the effect of in situ stress, heterogeneity of rock mass and dynamic parameters on failure degree and scope.

Key words： CASRock dynamic analysis engineering rock mass failure process destress blasting disturbance induced failure

Received: 31 July 2021 Published: 20 September 2021

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PAN Pengzhi,MEI Wanquan. Dynamic response analysis method, software and applications in engineering rockmass based on CASRock[J]. Hazard Control in Tunnelling and Underground Engineering, 2021, 3(3): 1-10.

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http://tunnel.sdujournals.com/EN/10.19952/j.cnki.2096-5052.2021.03.01 OR http://tunnel.sdujournals.com/EN/Y2021/V3/I3/1

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