数值模拟在地下煤矿开采岩石力学问题中的应用Use of numerical modeling for analyzing rock mechanic problems in underground coal mine practices
高富强
摘要(Abstract):
随着计算机软、硬件的飞速发展,数值模拟工具在各种尺度上模拟物理现象的能力及相关的计算能力都取得了重大进展。在岩石力学领域,数值模拟方法已经被广泛应用于评估复杂岩体的力学响应、研究岩体变形和破坏机理等方面,成为岩石工程和采矿工程领域常用甚至必备的手段。探讨了采用数值模拟分析解决地下煤矿开采中典型的岩石力学问题时应注意的关键问题,包括数值模拟方法的选择、煤岩体力学参数的确定、本构模型的选取、巷道围岩破坏机理分析、蠕变及冲击地压的时间因素及采空区顶板覆岩周期性垮塌,以期为地下煤炭开采研究人员提供参考。
关键词(KeyWords): 数值模拟;煤矿开采;岩石力学;动力破坏
基金项目(Foundation): 国家重点研发计划资助项目(2017YFC0603000);; 国家自然科学基金面上资助项目(51774185)
作者(Author): 高富强
DOI: 10.13532/j.jmsce.cn10-1638/td.2019.02.009
参考文献(References):
- [1] HOEK E,MARTIN C D. Fracture initiation and propagation in intact rocke-A review[J]. Journal of Rock Mechanics and Geotechnical Engineering,2014(6):287-300.
- [2] BOARD M. BRUMMER R. Seldon S. Use of numerical modeling for mine design and evaluation. Underground mining methods[M]. Society for Mining,Metallurgy,and Exploration,Inc,2001:483-492.
- [3] HOEK E,CARRANZA-TORRES C,CORKUM B. Hoek-Brownfailure criterion———2002 edition[A]. NARMS-TAC 2002:Mining and Tunnelling Innovation and Opportunity[C]. University of Toronto Press,Toronto,2002:267-273.
- [4] HOEK E,DIEDERICHS M S. Empirical estimation of rock mass modulus[J]. International Journal of Rock Mechanics and Mining Sciences,2006,43:203-215.
- [5] HOEK E,KAISER P K,BAWDEN W F. Support of underground excavations in hard rock[M]. Balkema,Rotterdam,1995.
- [6] PENG S. Coal mine ground control[M]. 2nd. New York:Wiley,1986.
- [7] MEDHURST T P,Brown E T. A study of the mechanical behavior of coal for pillar design[J]. International Journal of Rock Mechanics and Mining Sciences,1998,35:1087-1105.
- [8] BIENIAWSKI Z T. The effect of specimen size on compressive strength of coal[J]. International Journal of Rock Mechanics and Mining Sciences Geomechanical Abstract,1968,5:325-335.
- [9] GAO F,STEAD D,KANG H. Numerical simulation of squeezing failure in a coal mine roadway due to mining-induced stresses[J]. Rock Mechanics and Rock Engineering,2015,48(4):1635-1645.
- [10]康红普,姜铁明,高富强.预应力锚杆支护参数的设计[J].煤炭学报,2008,33(7):721-726.KANG Hongpu,JIANG Tieming,GAO Fuqiang. Design for pretensioned rock bolting parameters[J]. Journal of China Coal Society,2008,33(7):721-726.
- [11]康红普,范明建,高富强,等.超千米深井巷道围岩变形特征与支护技术[J].岩石力学与工程学报,2015,34(11):2227-2241.KANG Hongpu,FAN Mingjian,GAO Fuqiang,et al. Deformation and support of rock roadway at depth more than 1000 meters[J]. Chinese Journal of Rock Mechanics and Engineering,2015,34(11):2227-2241.
- [12] ESTERHUIZEN G S,BAJPAYEE T S,ELLENBERGER J L,et al.Practical estimation of rock properties for modeling bedded coal mine strata using the coal mine roof rating[A]. The 47th U. S,Symposium on Rock Mechanics[C]. 2013:ARMA13-154.
- [13] KANG H P,LIN J,FAN M J. Investigation on support pattern of a coal mine roadway within soft rocks—A case study[J]. Int. J. Coal Geol,2015,140:31-40.
- [14] KANG H,LYU H,ZHANG X,et al. Evaluation of the ground response of a pre-driven longwall recovery room supported by concrete cribs[J]. Rock Mechanics and Rock Engineering,2016,49:1025-1040.
- [15] LORIG L J,VARONA P. Guidelines for numerical modelling of rock support for mines[A]. Ground Support 2013[C]. Australian Centre for Geomechanics,Perth,2013:81-106.
- [16] BROWN E T. Block caving Geomechanics[A]. The International Caving Study I,1997-2000JKMRC Monograph Series in Mining and Mineral Processing,Vol. 3[C]. Julius Kruttschnitt Mineral Research Centre,Indooroopilly,2003.
- [17] PIERCE M,CUNDALL P,POTYONDY D,et al. A synthetic rock mass model for jointed rock[A]. Presented at the Proceedings of the1st Canada-US Rock Mechanics Symposium[C]. Taylor&Francis,Vancouver,2007:341-349.
- [18] GAO F Q,KANG H P. Effects of pre-existing discontinuities on the residual strength of rock mass—insight from a discrete element method simulation[J]. Journal of Structural Geology,2016,85:40-50.
- [19] LI K,HEASLEY K. Using field measurements to quantify the postfailure behavior of coal[A]. Proceeding of the 49th US Rock Mechanics/Geomechanics Symposium[C]. San Francisco,USA,2004.DOI:Paper 14-7133.
- [20]姜耀东,潘一山,姜福兴,等.我国煤炭开采中的冲击地压机制和防治[J].煤炭学报,2014,39(2):205-213.JIANG Yaodong,PAN Yishan,JIANG Fuxing,et al. State of the art review on mechanism and prevention of coal bumps in China[J].Journal of China Coal Society,2014,39(2):205-213.
- [21] SHARAN S K. A finite element perturbation method for the prediction of rockburst[J]. Comput Struct,2007,85(17-18):1304-1309.
- [22] 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]. Bull Eng Geol Environ,2010,69(3):381-388.
- [23] GUNTUMADUGU R. Methodology for the design of dynamic rock supports in burst prone ground[D]. Mc Gill University,2013.
- [24] GUI Y L,ZHAO Z Y,ZHOU H Y,et al. Numerical simulation of Pwave propagation in rock mass with granular material-filled fractures using hybrid continuum-discrete element method[J]. Rock Mechanics and Rock Engineering,2016,49(10):4049-4060.
- [25]高富强,康红普,林健.深部巷道围岩分区破裂化数值模拟[J].煤炭学报,2010,35(4):21-25.GAO Fuqiang, KANG Hongpu, LIN Jian. Numerical simulation of zonal distrigation of surrounding rock mass in deep mine roadways[J]. Journal of China Coal Society,2010,35(4):21-25.