基于改进刚体弹簧方法的开挖损伤演化分析

doi:10.13722/j.cnki.jrme.2015.0978

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摘要基于改进刚体弹簧方法研究结构面在围岩开挖过程中的响应及围岩损伤区范围。改进刚体弹簧方法基于Voronoi网格，能够显式模拟细观裂隙的起裂、扩展和贯通过程。界面破坏准则结合了Hoek-Brown准则和抗拉强度准则，能同时考虑拉裂和剪切2种破坏模式。计算采用渐变式的网格，对重点关注区域进行网格局部加密，这种方式可以精细考虑开挖面附近的围岩损伤同时提高计算效率。为验证模型的合理性，在弹性条件下对一个简单算例进行计算，计算结果与有限元结果吻合良好。以锦屏二级水电站引水隧洞为例，计算NWW向优势陡倾节理在不同开挖步对围岩损伤区的影响，损伤区分布规律与现场观测结果基本吻合。

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关键词 ：岩石力学, 裂隙扩展, 结构面, 开挖损伤区, 刚体弹簧方法

Abstract：This paper describes the numerical modeling of excavation damaged zone(EDZ) in surrounding rocks with embedded structural planes. A modified rigid body spring method(RBSM) was proposed to simulate the initiation and propagation of micro cracks. Both the tensile and shear failures were considered by introducing a failure criterion which combines the Hoek-Brown criterion and the tensile strength criterion. The rock material was represented by an equivalent discrete assembly of rigid blocks based on a degradation Voronoi mesh. A simple case was employed to demonstrate the validity of the proposed model，and the simulation results were compared with ones from the finite element method. At last，the EDZ of the diversion tunnel in the Jinping II hydropower project was studied using the proposed model with the emphasis on the NWW joint and some suggestions were given on the reinforcement project. The simulated EDZs were generally in agreement with the in-situ observation.

Key words： rock mechanics crack propagation structural planes excavation damaged zone(EDZ) rigid body spring method(RBSM)

引用本文:

姚池1，李瑶2，姜清辉1，2，杨建华1，周创兵1，2. 基于改进刚体弹簧方法的开挖损伤演化分析[J]. 岩石力学与工程学报, 2015, 34(10): 1959-1966.
YAO Chi1，LI Yao2，JIANG Qinghui1，2，YANG Jianhua1，ZHOU Chuangbing1，2. NUMERICAL SIMULATION OF EXCAVATION DAMAGED ZONE USING THE MODIFIED RIGID BODY SPRING METHOD. , 2015, 34(10): 1959-1966.

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https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2015.0978 或 https://rockmech.whrsm.ac.cn/CN/Y2015/V34/I10/1959

[1]	周宏伟，谢和平，左建平. 深部高地应力下岩石力学行为研究进展[J]. 力学进展，2005，35(1)：91-99.(ZHOU Hongwei，XIE Heping，ZUO Jianping. Developments in researches on mechanical behaviors of rocks under the condition of high ground pressure in the depths[J]. Advances in Mechanics，2005，35(1)：91-99.(in Chinese))
[2]	刘宁，张春生，褚卫江，等. 锦屏二级水电站深埋隧洞开挖损伤区特征分析[J]. 岩石力学与工程学报，2013，32(11)：2 235-2 241. (LIU Ning，ZHANG Chunsheng，CHU Weijiang，et al. Excavation damaged zone characteristics in deep tunnel of Jinping II hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(11)：2 235-2 241.(in Chinese)) " target="_blank">
[3]	胡大伟，周辉，谢守益，等. 峰后大理岩非线性渗流特征及机制研究[J]. 岩石力学与工程学报，2009，28(3)：451-458.(HU Dawei，ZHOU Hui，XIE Shouyi，et al. Research on character and mechanism of nonlinear seepage in post-peak marble[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(3)：451-458.(in Chinese))
[4]	JING L，HUDSON J A. Numerical methods in rock mechanics[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(4)：409-427.
[5]	EBERHARDT E. Numerical modelling of three-dimension stress rotation ahead of an advancing tunnel face[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(4)：499-518. " target="_blank">
[6]	CAI M，KAISER P K. In situ rock spalling strength near excavation boundaries[J]. Rock Mechanics and Rock Engineering，2014，47(2)：659-675. " target="_blank">
[7]	肖明. 地下洞室隐式锚杆柱单元的三维弹塑性有限元分析[J]. 岩土工程学报，1992，14(5)：19-26.(XIAO Ming. 3D elastoplastic FEM analysis of implicit cylindric anchor bar element for underground opening[J]. Chinese Journal of Geotechnical Engineering，1992，14(5)：19-26.(in Chinese))
[8]	郑颖人，赵尚毅. 岩土工程极限分析有限元法及其应用[J]. 土木工程学报，2005，38(1)：91-98.(ZHENG Yingren，ZHAO Shangyi. Limit state finite element method for geotechnical engineering analysis and its applications[J]. China Civil Engineering Journal，2005，38(1)：91-98.(in Chinese)) " target="_blank">
[9]	POTYONDY D O，CUNDALL P A. A bonded-particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(8)：1 329-1 364. " target="_blank">
[10]	KOZICKI J，DONZÉ F V. YADE‐OPEN DEM：an open-source software using a discrete element method to simulate granular material[J]. Engineering Computations，2009，26(7)：786-805. " target="_blank">
[11]	MUNJIZA A. The combined finite-discrete element method[M]. Chichester，England：John Wiley and Sons Ltd.，2004：1-23. " target="_blank">
[12]	LISJAK A. Investigating the influence of mechanical anisotropy on the fracturing behaviour of brittle clay shales with application to deep geological repositories[Ph. D. Thesis][D]. Toronto，Canada：University of Toronto，2013. " target="_blank">
[13]	YAO C，JIANG Q H，SHAO J F. Numerical simulation of damage and failure in brittle rocks using a modified rigid block spring method[J]. Computers and Geotechnics，2015，64：48-60. " target="_blank">
[14]	姚池，姜清辉，邵建富，等. 一种模拟岩石破裂的细观数值计算模型[J]. 岩石力学与工程学报，2013，32(增2)：3 146-3 153.(YAO Chi，JIANG Qinghui，SHAO Jianfu，et al. A mesoscopic numerical model for simulation of rock fracturing[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 146-3 153.(in Chinese)) " target="_blank">
[15]	YAO C，JIANG Q，SHAO J，et al. Numerical simulation of rock failure process using improved rigid body spring method[C]// Proceedings of the 7th International Conference on Micromechanics of Granular Media. Sydney，Australia：[s.n.]，2013：217-220. " target="_blank">
[16]	BARTON N R. From empiricism，through theory，to problem solving in rock engineering[C]// Proceedings of Harmonising Rock Engineering and the Environment. London，UK：CRC Press，2011：3-16. " target="_blank">
[17]	吴文平，冯夏庭，张传庆，等. 深埋硬岩隧洞围岩的破坏模式分类与调控策略[J]. 岩石力学与工程学报，2011，30(9)：1 782-1 802. (WU Wenping，FENG Xiating，ZHANG Chuanqing，et al. Classification of failure modes and controlling measures for surrounding rock of deep tunnel in hard rock[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(9)：1 782-1 802.(in Chinese)) " target="_blank">
[18]	张春生，陈祥荣，侯靖，等. 锦屏二级水电站深埋大理岩力学特性研究[J]. 岩石力学与工程学报，2010，29(10)：1 999-2 009. (ZHANG Chunsheng，CHEN Xiangrong，HOU Jing，et al. Study of mechanical behavior of deep-buried marble at Jinping II hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：1 999-2 009.(in Chinese)) " target="_blank">
[19]	侯哲生，龚秋明，孙卓恒. 锦屏二级水电站深埋完整大理岩基本破坏方式及其发生机制[J]. 岩石力学与工程学报，2011，30(4)：727-732.(HOU Zhesheng，GONG Qiuming，SUN Zhuoheng. Primary failure types and their failure mechanisms of deep buried and intact marble at Jinping II hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(4)：727-732.(in Chinese))
[20]	褚卫江. 深埋条件下隧洞围岩稳定与结构安全评估[R]. 杭州：中国水电顾问集团华东勘测设计研究院，2009.(CHU Weijiang. Safety and stability assessment of surrounding rocks in deep buried rocks[R]. Hangzhou：HydroChina Huadong Engineering Corporation，2009.(in Chinese)) " target="_blank">