深部椭圆形洞室围岩冲击岩爆实验研究

doi:10.13722/j.cnki.jrme.2021.0574

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Abstract Using a self-developed impact rockburst equipment，the rockburst phenomena of surrounding sandstone of elliptical caverns under true triaxial loading were reproduced. The stress acquisition system，real-time video recording system and acoustic emission(AE) system were used to investigate the sandstone rockburst failure. Specifically，the failure characteristics such as stresses，fragments，rockburst pits，velocity field and AE were discussed in detail. The results show that the process of impact rockburst of surrounding sandstone of elliptical caverns can be divided into four stages，i.e.，quiet period，small particle ejection，spalling and rockburst. Additionally，the disturbance loading makes the tangential stress of the surrounding rock increase rapidly(beyond the uniaxial compression strength)，which promotes the violent rockburst phenomenon. Furthermore，the lengths of most rockburst fragments are larger than 5 mm，and the dominant shape of the fragments is flake，which is similar to the distribution characteristics of rockburst fragments in field. Moreover，the V-shape pits are symmetrically distributed on the left and right side walls of the cavern，and their positions are perpendicular to the disturbance direction. The velocity field shows a trend of increasing and then decreasing during the both stages of spalling and rockburst，and the velocity reaches the peak at rockburst. Finally，the AE count rate is closely related to the number of loading directions，and the AE count rate and the cumulative count both increase rapidly at the rockburst stage. The main frequency band of AE gradually becomes narrow with decreasing the number of load directions，and the main frequency is mainly distributed between 100 to 200 kHz. The low-frequency(40–70 kHz)，high-frequency and ultra-high-frequency AE signals all appear at the rockburst stage，confirming the complexity of rockburst.

Key words： rock mechanics impact rockburst elliptical caverns rockburst pit rockburst fragments velocity field acoustic emission

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	Articles by authors
	WANG Yang1
	2
	3
	HE Manchao3
	LIU Dongqiao3
	LING Kai3
	REN Fuqiang4

Cite this article:

WANG Yang1,2,3, et al. Experimental study on impact rockburst of surrounding rock in deep elliptical caverns[J]. , 2021, 40(11): 2214-2228.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0574 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I11/2214

[1]	何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J]. 岩石力学与工程学报，2005，24(16)：2 803-2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803-2 813.(in Chinese))
[2]	何满潮，钱七虎. 深部岩体力学基础[M]. 北京：科学出版社，2010：1-3.(HE Manchao，QIAN Qihu. The basis of deep rock mechanics[M]. Beijing：Science Press，2010：1-3.(in Chinese))
[3]	孟陆波，赵建壮. 岩爆的洞室效应[J]. 中国地质灾害与防治学报，2008，19(2)：59-62.(MENG Lubo，ZHAO Jianzhuang. The chamber effects of rock burst[J]. The Chinese Journal of Geological Hazard and Control，2008，19(2)：59-62.(in Chinese))
[4]	READ R S，CHANDLER N A，DZIK E J. In situ strength criteria for tunnel design in highly-stressed rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，1998，35(3)：261-278.
[5]	于学馥. 轴变论与围岩变形破坏的基本规律[J]. 铀矿冶，1982，1(1)：8-17.(YU Xuefu. On the theory of axial variation and basic rules of deformation and fracture of rocks surrounding underground excavations[J]. Uranium Mining and Metallurgy，1982，1(1)：8-17. (in Chinese))
[6]	于学馥，乔端. 轴变论和围岩稳定轴比三规律[J]. 有色金属，1981，33(3)：8-15.(YU Xuefu，QIAO Duan. Theory of axial variation and three rules of axial ratio for stabilizing country rock[J]. Nonferrous Metals，1981，33(3)：8-15.(in Chinese))
[7]	赵兴东，段进超，唐春安，等. 不同断面形式隧道破坏模式研究[J]. 岩石力学与工程学报，2004，23(增2)：4 921-4 925.(ZHAO Xingdong，DUAN Jingchao，TANG Chun¢an，et al. Study on failure mode of tunnels with different sections[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(Supp.2)：4 921-4 925.(in Chinese))
[8]	李桂臣，张农，王成，等. 高地应力巷道断面形状优化数值模拟研究[J]. 中国矿业大学学报，2010，39(5)：652-658.(LI Guichen，ZHANG Nong，WANG Cheng，et al. Optimizing the section shape of roadways in high stress ground by numerical simulation[J]. Journal of China University of Mining and Technology，2010，39(5)：652-658. (in Chinese))
[9]	马德鹏，杨永杰，曹吉胜，等. 基于能量释放的深井巷道断面形状优化[J]. 中南大学学报：自然科学版，2015，46(9)：3 354-3 360. (MA Depeng，YANG Yongjie，CAO Jisheng，et al. Optimization design of cross section shape of deep roadways based on characteristics of energy release[J]. Journal of Central South University：Science and Technology，2015，46(9)：3 354-3 360.(in Chinese))
[10]	孟庆彬，韩立军，乔卫国，等. 深部高应力软岩巷道断面形状优化设计数值模拟研究[J]. 采矿与安全工程学报，2012，29(5)：650-656.(MENG Qingbin，HAN Lijun，QIAO Weiguo，et al. Numerical simulation of cross-section shape optimization design of deep soft rock roadway under high stress[J]. Journal of Mining and Safety Engineering，2012，29(5)：650-656.(in Chinese))
[11]	WANG Y，HE M C，LIU D Q，et al. Rockburst in sandstone containing elliptic holes with varying axial ratios[J]. Advances in Materials Science and Engineering，2019，2019：1-17.
[12]	何满潮，刘冬桥，宫伟力，等. 冲击岩爆试验系统研发及试验[J]. 岩石力学与工程学报，2014，33(9)：1 729-1 739.(HE Manchao，LIU Dongqiao，GONG Weili，et al. Development of a testing system for impact rockbursts[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1 729-1 739.(in Chinese))
[13]	WANG Y，ZHU C，HE M C，et al. Fragmentation characteristics analysis of sandstone fragments for impact rockburst under different dynamic loading frequency[J]. Geotechnical and Geological Engineering，2019，37(1)：2 715-2 727.
[14]	宫凤强，罗勇，司雪峰，等. 深部圆形隧洞板裂屈曲岩爆的模拟试验研究[J]. 岩石力学与工程学报，2017，36(7)：1 634-1 648. (GONG Fengqiang，LUO Yong，SI Xuefeng，et al. Experimental modelling on rockburst in deep hard rock circular tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(7)：1 634- 1 648.(in Chinese))
[15]	宫凤强，罗勇，刘冬桥. 深部直墙拱形隧洞围岩板裂破坏的模拟试验研究[J]. 岩土工程学报，2019，41(6)：1 091-1 100.(GONG Fengqiang，LUO Yong，LIU Dongqiao. Simulation tests on spalling failure in deep straight-wall-top-arch tunnels[J]. Chinese Journal of Geotechnical Engineering，2019，41(6)：1 091-1 100.(in Chinese))
[16]	宫凤强，伍武星，李天斌，等. 深部硬岩矩形隧洞围岩板裂破坏的试验模拟研究[J]. 岩土力学，2019，40(6)：2 085-2 098.(GONG Fengqiang，WU Wuxing，LI Tianbin，et al. Simulation experimental study of spalling failure of surrounding rock of rectangular tunnel of deep hard rock[J]. Rock and Soil Mechanics，2019，40(6)：2 085-2 098. (in Chinese))
[17]	黄禄渊，杨树新，崔效锋，等. 华北地区实测应力特征与断层稳定性分析[J]. 岩土力学，2013，34(增1)：204-213.(HUANG Luyuan，YANG Shuxin，CUI Xiaofeng，et al. Analysis of characteristics of measured stress and stability of faults in North China[J]. Rock and Soil Mechanics，2013，34(Supp.1)：204-213.(in Chinese))
[18]	梁昌玉，李晓，李守定，等. 岩石静态和准动态加载应变率的界限值研究[J]. 岩石力学与工程学报，2012，31(6)：1 156-1 161. (LIANG Changyu，LI Xiao，LI Shouding，et al. Study of strain rates threshold value between static loading and quasi-dynamic loading of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(6)：1 156-1 161.(in Chinese))
[19]	BRADY B H G，BROWN E T. Rock Mechanics for underground mining[M]. New York：Kluwer Academic Publishers，2005：175-176.
[20]	GONG F Q，LUO Y，LI X B，et al. Experimental simulation investigation on rockburst induced by spalling failure in deep circular tunnels[J]. Tunnelling and Underground Space Technology，2018，81：413-427.
[21]	MARTIN C D. Seventeenth canadian geotechnical colloquium：The effect of cohesion loss and stress path on brittle rock strength[J]. Canadian Geotechnical Journal，1997，34(5)：698-725.
[22]	HE M C，XIA H M，JIA X N，et al. Studies on classification，criteria and control of rockbursts[J]. Journal of Rock Mechanics and Geotechnical Engineering，2012，4(2)：97-114.
[23]	LIM S S，MARTIN C D. Core disking and its relationship with stress magnitude for Lac du Bonnet granite[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(2)：254-264.
[24]	ZHANG C Q，FENG X T，ZHOU H. Estimation of in situ stress along deep tunnels buried in complex geological conditions[J]. International Journal of Rock Mechanics and Mining Sciences，2012，52(3)：139-162.
[25]	HOEK E，MARTIN C D. Fracture initiation and propagation in intact rock-A review[J]. Journal of Rock Mechanics and Geotechnical Engineering，2014，6(4)：287-300.
[26]	田四明，赵勇，石少帅，等. 中国铁路隧道建设期典型灾害防控方法现状、问题与对策[J]. 隧道与地下工程灾害防治，2019，1(2)：24-48.(TIAN Siming，ZHAO Yong，SHI Shaoshuai，et al. The status，problems and countermeasures of typical disaster prevention and control methods during the construction period of Chinese railway tunnels[J]. Hazard Control in Tunnelling and Underground Engineering，2019，1(2)：24-48.(in Chinese))
[27]	张传庆，冯夏庭，周辉. 深部试验隧洞围岩脆性破坏及数值模拟[J]. 岩石力学与工程学报，2010，29(10)：2 063-2 068. (ZHANG Chuanqing，FENG Xiating，ZHOU Hui，et al. Brittle failure of surrounding rock mass in deep test tunnels and its numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 063-2 068.(in Chinese))
[28]	谭以安. 岩爆特征及岩体结构效应[J]. 中国科学：B 辑，1991，(9)：985-991.(TAN Yian. Characters of rockburst and structural effect of rock mass[J]. Science in China：Series B，1991，(9)：985-991.(in Chinese))
[29]	READ R S. 20 years of excavation response studies at AECL¢s Underground Research Laboratory[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(8)：1 251-1 275.
[30]	何满潮，李杰宇，任富强，等. 不同层理倾角砂岩单向双面卸荷岩爆弹射速度实验研究[J]. 岩石力学与工程学报，2021，40(3)：433-447.(HE Manchao，LI Jieyu，REN Fuqiang，et al. Experimental investigation on rockburst ejection velocity of unidirectional double-face unloading of sandstone with different bedding angles[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(3)：433-447.(in Chinese))
[31]	苗金丽，何满潮，李德建，等. 花岗岩应变岩爆声发射特征及微观断裂机制[J]. 岩石力学与工程学报，2009，28(8)：1 593-1 603. (MIAO Jinli，HE Manchao，LI Dejian，et al. Acoustic emission characteristics of granite under strain rockburst test and its micro-fracture mechanism[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 593-1 603.(in Chinese))
[32]	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 on rockburst processes of granite specimen at great depth[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：865-876.(in Chinese))
[33]	SUN X M，CHEN F，MIAO C Y，et al. Physical modeling of deformation failure mechanism of surrounding rocks for the deep-buried tunnel in soft rock strata during the excavation[J]. Tunnelling and Underground Space Technology，2018，74：247-261.
[34]	李天斌，潘皇宋，陈国庆，等. 热-力作用下隧道岩爆温度效应的物理模型试验[J]. 岩石力学与工程学报，2018，37(2)：261-273.(LI Tianbin，PAN Huangsong，CHEN Guoqing，et al. Physical model tests on thermo-mechanical effects in rockbursts around tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(2)：261-273.(in Chinese))
[35]	MARTIN C D，KAISER P K，MCCREATH D R. Hoek-Brown parameters for predicting the depth of brittle failure around tunnels[J]. Revue Canadienne de Géotechnique，1999，36(1)：136-151.
[36]	司雪峰，宫凤强，罗勇，等. 深部三维圆形洞室岩爆过程的模拟试验[J]. 岩土力学，2018，39(2)：621-634.(SI Xuefeng，GONG Fengqiang，LUO Yong，et al. Experimental simulation on rockburst process of deep three-dimensional circular cavern[J]. Rock and Soil Mechanics，2018，39(2)：621-634.(in Chinese))
[37]	LUO Y，GONG F Q，LIU D Q，et al. Experimental simulation analysis of the process and failure characteristics of spalling in D-shaped tunnels under true-triaxial loading conditions[J]. Tunnelling and underground space technology，2019，90：42-61.
[38]	GONG F Q，WU W X，LI T B，et al. Experimental simulation and investigation of spalling failure of rectangular tunnel under different three-dimensional stress states[J]. International Journal of Rock Mechanics and Mining Sciences，2019，122：1-14.
[39]	胡小川，苏国韶，陈冠言，等. 深埋隧洞硬岩板裂化过程试验研究[J]. 岩土工程学报，2020，42(12)：2 271-2 280.(HU Xiaochuan，SU Guoshao，CHEN Guanyan，et al. Experimental study on slabbing process of hard rock in deep tunnels[J]. Chinese Journal of Geotechnical Engineering，2020，42(12)：2 271-2 280.(in Chinese))