|
|
|
| AN ENERGY CRITERION IN PROCESS OF ROCKBURST |
| YANG Fanjie，ZHOU Hui，LU Jingjing，ZHANG Chuanqing，HU Dawei |
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Science，Wuhan，Hubei 430071，China) |
|
|
|
|
Abstract Rockburst is one kind of dynamic geological disasters，which seriously threatens the safety of design and construction in deep underground engineering. However，the traditional methods for predicting rockburst can only give a qualitative assessment of rockburst proneness based on the results of static quantitative calculation. It can not reasonably reflect the occurrence process of rockburst. In order to have more accurate projections for rockburst，based on the test and theoretical analysis，an intensive study on the mechanism of rockburst is carried out thereby. In essence，the study indicates that the mechanism of rockburst should be studied based on the dynamic propagation of the crack in rock mass. Then，a definition of rockburst is given from the perspective of the dynamic propagation of the crack. Finally，based on the above，a new energy criterion of rockburst—unit time relative local energy release index(URLERI) is put forward. And it is used for numerical simulation of the rockburst case for Jinping II hydropower station. The results show that there's a general agreement between simulating results and practical. And it shows that the energy criterion of rockburst is quite reasonable. The research results offered by this paper，no matter in evaluating，forecasting and preventing of the rockburst disaster in deep underground engineering，have its own significance in theory and in application.
|
|
|
|
|
|
| [1] BARTON N，LIEN R，LUNDE J. Engineering classification of rock masses for the design of tunnel support[J]. Rock Mechanics，1974，6(1)：189–236.
[2] SALAMON M D G. Stability，instability and design of pillar workings[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1970，7(6)：613–631.
[3] COOK N G W，HOEK E，PRETORIUS J P G，et al. Rock mechanics applied to the study of rockbursts[J]. SAIMM，1966，66(10)：436–528.
[4] KIDYBINSKI A. Bursting liability indices of coal[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1981，18(6)：295–304.
[5] 章梦涛. 冲击地压失稳理论与数值模拟计算[J]. 岩石力学与工程学报，1987，6(3)：197–204.(ZHANG Mengtao. The instability theory and numerical simulation of rock burst[J]. Chinese Journal of Rock Mechanics and Engineering，1987，6(3)：197–204.(in Chinese))
[6] 潘一山，章梦涛，李国臻. 洞室岩爆的尖角型突变模型[J]. 应用数学和力学，1994，15(10)：893–900.(PAN Yishan，ZHANG Mengtao，LI Guozheng. The study of chamber rockburst by the CUSP model of catastrophe theory[J]. Applied Mathematics and Mechanics，1994，15(10)：893–900.(in Chinese))
[7] 谢和平，PARISEAU W G. 岩爆的分形特征和机制[J]. 岩石力学与工程学报，1993，12(1)：28–37.(XIE Heping，PARISEAU W G. Fractal characteristics and mechanism of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，1993，12(1)：28–37.(in Chinese))
[8] 周瑞忠. 岩爆发生的规律和断裂力学机制分析[J]. 岩土工程学报，1995，17(6)：111–117.(ZHOU Ruizhong. Regularity of rock bursts and its analysis based on fracture mechanics[J]. Chinese Journal of Geotechnical Engineering，1995，17(6)：111–117.(in Chinese))
[9] 王 青，朱珍德，朱江棚，等. 长大引水隧洞岩爆的数值模拟及其应用[J]. 河海大学学报：自然科学版，2008，36(3)：363–366. (WANG Qing，ZHU Zhende，ZHU Jiangpeng，et al. Numerical simulation of a rock burst in long and wide diversion tunnel[J]. Journal of Hohai University：Natural Science，2008，36(3)：363–366.(in Chinese))
[10] 王耀辉，陈莉雯，沈 峰. 岩爆破坏过程能量释放的数值模拟[J]. 岩土力学，2008，29(3)：790–794.(WANG Yaohui，CHEN Liwen，SHEN Feng. Numerical modeling of energy release in rockburst[J]. Rock and Soil Mechanics，2008，29(3)：790–794.(in Chinese))
[11] COOK N G W. The design of underground excavations[C]// Eighth Rock Mechanics Symposium. [S. l]：[s. n]，1966：167–194.
[12] BRADY B H G，BROWN E T. Energy changes and stability in underground mining design application of boundary element methods[M]. [S. l]：[s. n]，1981：61–67.
[13] KWASNIEWSKI M，SZUTKOWSKI I，WANG J A. Study of ability of coal from seam 510 for storing elastic energy in the aspect of assessment of hazard in Porabka-Klimontow Colliery[R]. Silesian：Silesian Technical University，1994.
[14] WILES T D. Correlation between local energy release density observed bursting conditions at Creighton Mine[R]. Sudbury，Canada：Mines Research，1998.
[15] MITRI H S，HASSANI F P，KEBBE R. A strain energy approach for the prediction of rockburst potential in underground hard rock mines[C]// Proceedings of the First Can. Symp. on Numerical Modelling Applications in Mining and Geomech. [S. l]：[s. n]，1993：228–239.
[16] 苏国韶. 高应力下大型地下洞室群稳定性分析与智能优化研究[博士学位论文][D]. 武汉：中国科学院武汉岩土力学研究所，2006.(SU Guoshao. Study on stability analysis and intelligent optimization for large underground caverns under high geostress condition[Ph. D. Thesis][D]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2006.(in Chinese))
[17] 邱士利. 深埋大理岩加卸荷变形破坏机制及岩爆倾向性评估方法研究[博士学位论文][D]. 武汉：中国科学院武汉岩土力学研究所，2011.(QIU Shili. Study on deformation and failure mechanism of deep-buried hard rock under loading and unloading conditions and rockburst vulnerability assessment methods[Ph. D. Thesis][D]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2011.(in Chinese))
[18] JIANG Q，FENG X T，XIANG T B，et al. Rockburst characteristics and numerical simulation based on a new energy index：a case study of a tunnel at 2，500 m depth[J]. Bulletin of Engineering Geology and the Environment，2010，69(2)：381–388.
[19] 范天佑. 断裂动力学：原理与应用[M]. 北京：北京理工大学出版社，2006：111–116.(FAN Tianyou. Dynamic fracture mechanics principle and its application[M]. Beijing：Beijing Institute of Technology Press，2006：111–116.(in Chinese))
[20] FINEBERG J，GROSS S P，MARDER M，et al. Instability in dynamic fracture[J]. Physical Review Letters，1991，67(4)：457–460.
[21] FINEBERG J，GROSS S P，MARDER M，et al. Instability in the propagation of fast crack[J]. Phys. Rev. B，1992，45：5 146–5 154.
[22] ORTLEPP W D. Rock fracture and rockbursts[M]. Johannesburg：SAIMM，1977：21–22.
[23] 王兰生，李天斌，徐 进，等. 二郎山公路隧道岩爆及岩爆烈度分级[J]. 公路，1999，28(2)：41–45.(WANG Lansheng，LI Tianbin，XU Jin，et al. Rockburst and its intensity classification of Erlangshan highway tunnel[J]. Highway，1999，28(2)：41–45.(in Chinese))
[24] 徐林生，王兰生. 岩爆类型划分研究[J]. 地质灾害与环境保护，2000，3(11)：245–262.(XU Linsheng，WANG Lansheng. Study on the rockburst type classification[J]. Journal of Geological Hazards and Environment Preservation，2000，3(11)：245–262.(in Chinese))
[25] 何满潮，苗金丽，李德建，等. 深部花岗岩试样岩爆过程实验研究[J]. 岩石力学与工程学报，2007，26(5)：865–876.(HE Manchao，MIAO Jinli，LI Dejian，et al. Experimental study of rockburst processes of granite specimen at great depth[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：865–876.(in Chinese))
[26] 蔡 朋，邬爱清，汪 斌，等. 一种基于II型全过程曲线的岩爆倾向性指标[J]. 岩石力学与工程学报，2010，29(增1)：3 290–3 294. (CAI Peng，WU Aiqing，WANG Bin，et al. A rockburst proneness index based on class II whole process curve[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：3 290–3 294.(in Chinese))
[27] 左宇军. 动静组合加载下的岩石破坏特性研究[博士学位论文][D]. 长沙：中南大学，2005.(ZUO Yujun. Study on failure and fragmentation characteristics of rock under static-dynamic coupling loading[Ph. D. Thesis][D]. Changsha：Central South University，2005.(in Chinese))
[28] 李夕兵，古德生. 岩石冲击动力学[M]. 长沙：中南工业大学出版社，1994：87–88.(LI Xibing，GU Desheng. Rock impact dynamics[M]. Changsha：Central South University of Technology Press，1994：87–88.(in Chinese))
[29] LINDHOLM U S. High strain-rate tests，techniques in metals research[M]. New York：[s. n]，1971：5.
[30] 陶振宇. 岩石力学的理论与实践[M]. 北京：水利出版社，1981，257–276.(TAO Zhenyu. Theory and practice of rock mechanics[M]. Beijing：China Water Conservancy Press，1981：257–276.(in Chinese))
[31] 周 辉，杨凡杰，张传庆，等. 考虑围压效应的大理岩弹塑性耦合力学模型研究[J]. 岩石力学与工程学报，2012，31(12)：2 389–2 399. (ZHOU Hui，YANG Fanjie，ZHANG Chuanqing，et al. An elastoplastic coupling mechanical model for marble considering confining pressure effect[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(12)：2 389–2 399.(in Chinese)) |
|
|
|
2015, Vol. 34 
