应力波作用下含大型结构面岩体垮塌动力失稳机制

doi:10.13722/j.cnki.jrme.2021.0395

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摘要不连续结构面对爆炸应力波在岩体中的传播有很大影响，研究应力波作用下含大型结构面岩体动力垮塌失稳机制，为含结构面等地质构造条件下岩体开采及稳定性控制提供理论依据。以冬瓜山铜矿56–8#矿房采场回采诱发相邻56–7#矿柱采场垮塌为工程背景，建立结构面剪切滑移失稳力学模型，基于莫尔–库仑强度准则，采用理论分析方法计算了爆炸应力波通过结构面的透、反射系数，分析应力波通过结构面的应力响应特征；推导结构面发生剪切滑移的能量判据及应力判据，获得结构面的发生剪切失稳的条件。通过对结构面抗剪强度参数进行不断弱化，研究了微差爆破对结构面的破坏规律。研究表明：(1) 入射角在一定范围内，反射波不发生相位延迟现象，并且在此入射角范围内，能量耗散系数大于0，结构面发生剪切滑移；(2) 结构面是否发生剪切滑移失稳与结构面抗剪强度参数(内摩擦角、黏聚力)及应力波入射角、爆源距结构面距离有关；爆源距结构面的距离越远，结构面的抗剪强度参数越大，越不容易发生剪切滑移失稳。(3) 微差爆破造成结构面强度参数不断弱化，使其发生剪切破坏变得容易，当结构面参数达到了发生剪切滑移的临界条件时，则56–7#矿柱采场发生垮塌。

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	刘啸1
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	华心祝1
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	黄志国4
	杨朋4
	杨森1
	2
	常贯峰1
	2

关键词 ：采矿工程, 动力失稳, 爆炸应力波, 透反射系数, 能量判据, 应力判据

Abstract：Discontinuous structural planes have great influence on the propagation of explosion stress waves in rock mass，and studies on the dynamic collapse mechanism of rock mass with large structural planes under stress waves provide a theoretical basis for mining and stability control of rock mass under geological structure conditions. Based on the collapse of adjacent 56–#7 pillar stope induced by stoping in 56–#8 room stope of Dongguashan Copper Mine，a mechanical model of shear slip instability of structural planes is established. Based on Mohr-Coulomb strength criterion，the transmission and reflection coefficients of explosion stress waves passing through a structural plane are calculated by theoretical analysis method，and the stress response characteristics of stress waves passing through a structural plane are analyzed. The energy criterion and the stress criterion of shear slip are derived，and the condition of shear instability is obtained. By weakening the shear strength parameters of structural planes，the damage law of structural planes caused by millisecond blasting is analyzed. As is shown by the research findings：(1) when the incident angle is in a certain range，the reflected wave does not have phase delay，the energy dissipation coefficient is greater than 0，and the structural plane shear slip occurs，(2) the shear slip instability of the structural plane is related to the shear strength parameters(internal friction angle and cohesion)，the incident angle of stress waves and the distance between the blasting source and the structural plane，and the farther the blasting source is from the structural plane，the larger the shear strength parameters of the structural plane and the less prone to shear slip instability，and (3) when the parameters of the structural plane reach the critical condition of shear slip，the stope of 56–#7 pillar collapses.

Key words： mining engineering dynamic instability explosion stress wave transmission and reflection coefficient energy criterion stress criterion

引用本文:

刘啸1，2，3，华心祝1，2，黄志国4，杨朋4，杨森1，2，常贯峰1，2. 应力波作用下含大型结构面岩体垮塌动力失稳机制[J]. 岩石力学与工程学报, 2021, 40(10): 2003-2014.
LIU Xiao1，2，3，HUA Xinzhu1，2，HUANG Zhiguo4，YANG Peng4，YANG Sen1，2，CHANG Guanfeng1，2. Dynamic collapse mechanisms of rock mass with large structural planes under stress waves. , 2021, 40(10): 2003-2014.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0395 或 http://rockmech.whrsm.ac.cn/CN/Y2021/V40/I10/2003

[2]	黎海滨，谭捍华，袁维，等. 剪切方向与锚杆倾向共面条件下的锚固机制研究[J]. 岩土力学，2020，41(增2)：1-11.(LI Haibin，TAN Hanhua，YUAN Wei，et al. The anchorage mechanism under the coplanar condition of shear direction and bolt inclination[J]. Rock and Soil Mechanics，2020，41(Supp.2)：1-11.(in Chinese))
[4]	DONG L J，WESSELOO J，POTVIN Y，et al. Discrimination of mine seismic events and blasts using the fisher classifier，naive bayesian classifier and logistic regression[J]. Rock Mechanics and Rock Engineering，2016，49(1)：183-211.
[7]	LI J C，MA G W. Analysis of blast wave interaction with a rock joint[J]. Rock Mechanics and Rock Engineering，2010，43(6)：777-787.
[16]	杨仁树，许鹏，陈程. 爆炸应力波与裂纹作用实验研究[J].爆炸与冲击，2019，39(8)：30-40.(YANG Renshu，XU Peng，CHEN Cheng. Interaction between blast stress waves and cracks[J]. Explosion and Shock Waves，2019，39(8)：30-40.(in Chinese))
[1]	杨烜宇，王闫超，李景皓，等. 基于能量守恒确定岩体结构面的抗剪强度[J]. 岩石力学与工程学报，2020，39(增1)：2 674-2 682. (YANG Xuanyu，WANG Yanchao，LI Jinghao，et al. A method to determine the shear strength of structural plane based on energy conservation[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(Supp.1)：2 674-2 682.(in Chinese))
[3]	康红普. 我国煤矿巷道围岩控制技术发展70年及展望[J]. 岩石力学与工程学报，2021，40(1)：1-30.(KANG Hongpu. Seventy years development and prospects of strata control technology for coal mine roadways in China[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(1)：1-30.(in Chinese))
[6]	柴少波，李建春，李海波，等. 平面P波入射含结构面岩体并引起地表面的振动研究[J]. 岩石力学与工程学报，2015，34(增2)：3 888-3 895.(CHAI Shaobo，LI Jianchun，LI Haibo，et al. Study of P-wave propagation across a natural structural plane and its influence on ground motion[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.2)：3 888-3 895.(in Chinese))
[8]	LI X B. Influence of the structural weakness planes in rock mass on the propagation of stress waves[J]. Explosion and Shock Waves，1993，13(4)：334-342.
[10]	王斐笠，王述红，修占国. 应力波扰动下结构面的应力量化及强度表征[J]. 岩土力学，2018，39(8)：2 844-2 850.(WANG Feili，WANG Shuhong，XIU Zhanguo. Method on stress quantification and strength characterization of rock structural plane under the disturbance of stress wave[J]. Rock and Soil Mechanics，2018，39(8)：2 844- 2 850.(in Chinese))
[9]	ZHU J，REN M，LIAO Z . Wave propagation and diffraction through non-persistent rock joints：An analytical and numerical study[J]. International Journal of Rock Mechanics and Mining Sciences，2020，132：104362.
[11]	孙宁新，雷明锋，张运良，等. 软弱夹层对爆炸应力波传播过程的影响研究[J]. 振动与冲击，2020，39(16)：112-119.(SUN Ningxin，LEI Mingfeng，ZHANG Yunliang，et al. A study on the influence of weak interlayer on the propagation process of explosion stress wave[J]. Journal of Vibration and Shock，2020，39(16)：112-119.(in Chinese))
[18]	HU J H，GAO H W，XUE X M，et al. Influence of structural planes on response of explosion shock engineering[J]. Journal of Central South University：Science and Technology，2017，48(6)：1 560-1 567.
[20]	刘晓明，罗周全，孟稳权，等. 深井采场大规模垮塌三维探测及可视化计算[J]. 中南大学学报：自然科学版，2011，42(1)：158-163.(LIU Xiaoming，LUO Zhouquan，MENG Wenquan，et al. 3D monitoring and visible calculation of large-scale collapse area in deep mine[J]. Journal of Central South University：Science and Technology，2011，42(1)：158-163.(in Chinese))
[25]	王水林，郭明伟，王万军，等. 节理面剪切应力-切向位移曲线峰值后区特性的初步研究[J]. 岩石力学与工程学报，2016，35(增2)：3 805-3 812.(WANG Shuilin，GUO Mingwei，WANG Wanjun，et al. A preliminary study of the post-peak characteristics of shear stress-displacement curves of joints[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 805-3 812.(in Chinese))
[5]	王昊，柴少波，蔚立元，等. 平面P波在含结构面黏弹性岩体中的传播[J]. 岩石力学与工程学报，2020，39(增1)：2 763-2 770. (WANG Hao，CHAI Shaobo，YU Liyuan，et al. P-wave propagation across a viscous-elastic rock mass with a structural plane[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(Supp.1)：2 763-2 770.(in Chinese))
[14]	杨建明，乔兰，李庆文，等. 节理形态及吻合度对应力波传播影响试验[J]. 哈尔滨工业大学学报，2019，51(11)：194-200.(YANG Jianming，QIAO Lan，LI Qingwen，et al. Effects of joint roughness and joint matching degree coefficient on stress wave propagation[J]. Journal of Harbin Institute of Technology，2019，51(11)：194-200.(in Chinese))
[23]	王文龙. 钻孔爆破[M]. 北京，煤炭工业出版社，1984：53-58.(WANG Wenwen. Drilling and blasting[M]. Beijing，Coal Industry Press，1984：53-58.(in Chinese))
[12]	柴少波，赵均海，王昊. 柱面波在含节理岩体中传播的UDEC模拟[J]. 岩石力学与工程学报，2019，38(增1)：2 848-2 856.(CHAI Shaobo，ZHAO Junhai，WANG Hao. UDEC simulation on cylindrical wave propagation through jointed rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.1)：2 848-2 856.(in Chinese))
[13]	柴少波，李建春，赵均海，等. P波在非线性交叉节理岩体中的传播特性研究[J]. 岩石力学与工程学报，2019，38(6)：1 149-1 157. (CHAI Shaobo，LI Jianchun，ZHAO Junhai，et al. Study on stress P-wave propagation across intersecting rock joints with nonlinear deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(6)：1 149-1 157.(in Chinese))
[15]	高魁，刘泽功，刘健，等. 爆破应力波在构造带煤岩的传播规律及破坏特征[J]. 煤炭学报，2018，43(增1)：79-86.(GAO Kui，LIU Zegong，LIU Jian，et al. Propagation law and failure characteristics of blasting stress wave in structural belt coal-rock[J]. Journal of China Coal Society，2018，43(Supp.1)：79-86.(in Chinese))
[17]	李新平，董千，刘婷婷，等. 地应力下柱面应力波在节理岩体中传播规律研究[J]. 岩石力学与工程学报，2018，37(增1)：3 121-3 131.(LI Xinping，DONG Qian，LIU Tingting，et al. Research on propagation law of cylindrical stress wave in jointed rock mass under in-situ stress[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(Supp.1)：3 121-3 131.(in Chinese))
[19]	刘婷婷，李新平，李海波，等. 应力波在充填节理岩体中传播规律的数值研究[J]. 岩石力学与工程学报，2016，35(增2)：3 552-3 560. (LIU Tingting，LI Xinpin，LI Haibo，et al. Numerical study on stress wave propagation across filled joints[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 552-3 560.(in Chinese))
[21]	刘建东，陈何，孙忠铭，等. 平行密集束状深孔高效爆破技术研究及应用[J]. 工程爆破，2011，17(2)：23-25.(LIU Jiandong，CHEN He，SUN Zhongming，et al. Study and application of high efficient blasting technology of parallel dense bundle deep holes[J]. Engineering Blasting，2011，17(2)：23-25.(in Chinese))
[22]	CHAI S B，LI J C，LI H B. Propagation characteristics of cylindrical wave in joint rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(3)：523-530.
[24]	刘新荣，许彬，周小涵，等. 软硬互层岩体结构面宏细观剪切力学特性研究[J/OL]. 煤炭学报，2021，https：//doi.org/10.13225/j.cnki.jccs. 2020.1422.(LIU Xinrong，XU Bin，ZHOU Xiaohan，et al. Investigation on the macro-meso shear mechanical properties of soft-hard interbedded rock discontinuity[J]. Journal of China Coal Society，2021，https：//doi.org/10.13225/j.cnki.jccs.2020.1422.(in Chinese))
[26]	赵科，康红普，王晓卿，等. 晋城无烟煤结构面剪切参数的试验测定与估算方法[J]. 煤炭学报，2018，43(9)：2 432-2 437.(ZHAO Ke，KANG Hongpu，WANG Xiaoqing，et al. Test and estimation on the shear parameters of structural plane from Jincheng anthracite coal[J]. Journal of China Coal Society，2018，43(9)：2 432-2 437.(in Chinese))