采动应力偏转诱发回采巷道顶板断层活化风险评估

doi:10.13722/j.cnki.jrme.2022.1135

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Abstract Aiming at the problem that the roof fault of the mining roadway is prone to activation and roof deformation under the influence of mining. With the background of the roof crossing fault fracture zone of return laneway in 201 working face of Ruineng Coal Mine. Theoretical analysis, numerical simulation and field measurement were used in this study. Which contains the influence of principal stress deflection induced by mining activities on the risk of fault activation，the characteristics of the mining stress deflection in front of working face，the principal stress deflection characteristics of the roadway roof fault plane and the roof stability. The results showed that the mining stress deflection caused the transition from the tangent state to the secant state of the stress Mohr circle of the fault plane and the rock strength curve，which increased the risk of slip instability of the fault plane. The risk evaluation coefficient k of fault plane activation covering the ratio of normal stress to shear stress was obtained by theoretical derivation. The influence range of advance disturbance of working face was 25 m，the principal stress deflected obviously in the range of 2 m in front of the working face and 4m on the side of the coal wall of the roadway，and the deflection angle was greater than 60°. The principal stress deflection of shallow fault plane within 2 m of roadway roof was significantly affected by the mining disturbance of working face，and the significance decreased with the increase of distance from working face. The shallow part(k＞1) of the overlying roof of the roadway along the fault dip belonged to the fault activation risk area，and the deep part (k＜1) belonged to the stable area. The risk of fault activation risk zone decreased exponentially with the increase of distance from working face along fault strike. Within 5 m in front of the working face，it belonged to the high risk area. Within 5–20 m，it belonged to the general risk area. Within 20– 25 m，it belonged to the low risk area. The risk of fault activation in the mining stage of working face had a significant influence on the deformation of roadway roof. With the increase of distance from working face，roof deformation in high risk area＞general risk area＞low risk area. Based on the risk of fault activation and the stability of roadway roof，the reinforcement support scheme during mining was given.

Key words： mining engineering mining disturbance deflection of principal stress fault activation plastic zone roof stability

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	Articles by authors
	LI Ji1
	2
	ZHANG Rongguang1
	2
	YU Yang3
	YU Jiandong3
	XIE Panshi1
	2
	LANG Ding1
	2

Cite this article:

LI Ji1,2,ZHANG Rongguang1, et al. Risk assessment of roof fault activation induced by mining stress deflection in mining roadway[J]. , 2023, 42(S2): 4109-4120.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.1135 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/IS2/4109

[10]	XU D Y，SI H，HU Q T，et al. Quantitative study on the stress distribution characteristics of coal rock with faults[J]. Geofluids，2022，2022：8 115-8 126.
[1]	高玉兵，王炯，高海南，等. 断层构造影响下切顶卸压自动成巷矿压规律及围岩控制[J]. 岩石力学与工程学报，2019，38(11)：2 182-2 193.(GAO Yubing，WANG Jiong，GAO Hainan，et al. Mine pressure distribution and surrounding rock control of gob-side entry formed by roof cutting and pressure release under the influence of faults[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(11)：2 182-2 193.(in Chinese))
[3]	任政，张科学，姜耀东. 采动下逆断层活化过程中工作面应力场响应研究[J]. 煤炭科学技术，2021，49(9)：61-68.(REN Zheng，ZHANG Kexue，JIANG Yaodong. Research on response of stress field in working face during the thrust fault activation process under mining disturbance[J]. Coal Science and Technology，2021，49(9)：61-68.(in Chinese))
[7]	蔡武，窦林名，王桂峰，等. 煤层采掘活动引起断层活化的力学机制及其诱冲机理[J]. 采矿与安全工程学报，2019，36(6)：1 193- 1 202.(CAI Wu，DOU linming，WANG Guifeng，et al. Mechanism of fault reactivation and its induced coal burst caused by coal mining activities[J]. Journal of Mining and Safety Engineering，2019，36(6)：1 193-1 202.(in Chinese))
[8]	林远东，涂敏，付宝杰，等. 断层自锁与活化的力学机理及稳定性控制[J]. 采矿与安全工程学报，2019，36(5)：898-905.(LIN Yuandong，TU Min，FU Baojie，et al. Mechanical mechanisms of fault self-locking and activation and its control[J]. Journal of Mining and Safety Engineering，2019，36(5)：898-905.(in Chinese))
[11]	王学滨，郭长升，邓超群. 正、逆断层下盘开采断层及其附近煤层应力时空分布的数值模拟[J]. 地球物理学进展，2020，35(5)： 1 993-2 000.(WANG Xuebin，GUO Changsheng，DENG Chaoqun. Numerical simulation of spatiotemporal distributions of stresses on the fault and coal seam in the vicinity of the fault for mining in the footwall of the normal and reverse fault[J]. Progress in Geophysics，2020，35(5)：1 993-2 000.(in Chinese))
[13]	王宏伟，邵明明，王刚，等. 开采扰动下逆冲断层滑动面应力场演化特征[J]. 煤炭学报，2019，44(8)：2 318-2 327.(WANG Hongwei，SHAO Mingming，WANG Gang，et al. Characteristics of stress evolution on the thrust fault plane during the coal mining[J]. Journal of China Coal Society，2019，44(8)：2 318-2 327.(in Chinese))
[17]	陈世杰，肖明，陈俊涛，等. 断层对地应力场方向的扰动规律及反演分析方法[J]. 岩石力学与工程学报，2020，39(7)：1 434- 1 444.(CHEN Shijie，XIAO Ming，CHEN Juntao，et al. Disturbance law of faults to in-situ stress field directions and its inversion analysis method[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(7)：1 434-1 444.(in Chinese))
[18]	WANG H W，JIANG Y D，XUE S，et al. Influence of fault slip on mining-induced pressure and optimization of roadway support design in fault-influenced zone[J]. Journal of Rock Mechanics and Geotechnical Engineering，2016，8(5)：660-671.
[21]	YIN H Y，ZHAO C Y，ZHAI Y T，et al. Application of comprehensive support techniques to roadway tunneling in vicinity of Ordovician carbonate confined aquifers under complicated tectonic conditions[J]. Carbonates Evaporites，2020，35(4)：120.
[23]	李季，强旭博，马念杰，等. 巷道围岩蝶形塑性区蝶叶方向性形成机制及工程应用[J]. 煤炭学报，2021，46(9)：2 838-2 852.(LI Ji，QIANG Xubo，MA Nianjie，et al. Formation mechanism and engineering application of the directionality of butterfly leaf in the butterfly plastic zone of roadway rock surrounded[J]. Journal of China Coal Society，2021，46(9)：2 838-2 852.(in Chinese))
[27]	康红普，姜鹏飞，黄炳香，等. 煤矿千米深井巷道围岩支护-改性-卸压协同控制技术[J]. 煤炭学报，2020，45(3)：845-864. (KANG Hongpu，JIANG Pengfei，HUANG Bingxiang，et al. Roadway strata control technology by means of bolting-modification-destressing in synergy in 1 000 m deep coal mines[J]. Journal of China Coal Society，2020，45(3)：845-864.(in Chinese))
[4]	潘一山. 冲击地压发生和破坏过程研究[博士学位论文][D]. 北京：清华大学，1999.(PAN Yishan. Study on occurrence and failure process of rock burst[Ph. D. Thesis][D]. Beijing：Tsinghua University，1999.(in Chinese))
[14]	赵毅鑫，王浩，卢志国，等. 开采扰动下断层面库仑应力及诱发矿震时空演化特征[J]. 煤炭学报，2018，43(2)：340-347.(ZHAO Yixin，WANG Hao，LU Zhiguo，et al. Characteristics of tremor time-space evolution and Coulomb stress distribution along the fault during workface excavation[J]. Journal of China Coal Society，2018，43(2)：340-347.(in Chinese))
[24]	LI J，ZHANG R G，QIANG X B. The coal pillar width effect of principal stress deflection and plastic zone form of surrounding rock roadway in deep excavation[J]. Geofluids，2022，2022：8 115- 8 132.
[2]	姜耀东，潘一山，姜福兴，等. 我国煤炭开采中的冲击地压机理和防治[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.(in Chinese))
[12]	姜耀东，王涛，赵毅鑫，等. 采动影响下断层活化规律的数值模拟研究[J]. 中国矿业大学学报，2013，42(1)：1-5.(JIANG Yaodong，WANG Tao，ZHAO Yixin，et al. Numerical simulation of fault activation pattern induced by coal extraction[J]. Journal of China University of Mining and Technology，2013，42(1)：1-5.(in Chinese))
[22]	宋彦琦，李向上，郝亮钧，等. 双断层构造段围岩体的力学行为研究[J]. 采矿与安全工程学报，2020，37(5)：1 061-1 066.(SONG Yanqi，LI Xiangshang，HAO Liangjun，et al. The mechanical behavior of surrounding rock mass in double fault area[J]. Journal of Mining and Safety Engineering，2020，37(5)：1 061-1 066.(in Chinese))
[5]	赵毅鑫，卢志国，朱广沛，等. 考虑主应力偏转的采动诱发断层活化机理研究[J]. 中国矿业大学学报，2018，47(1)：73-80.(ZHAO Yixin，LU Zhiguo，ZHU Guangpei，et al. Fault reactive induced by the principal stress rotation for the underground coal mining[J]. Journal of China University of Mining and Technology，2018，47(1)：73-80.(in Chinese))
[6]	朱广安，窦林名，刘阳，等. 采动影响下断层滑移失稳的动力学分析及数值模拟[J]. 中国矿业大学学报，2016，45(1)：27-33.(ZHU Guang?an，DOU linming，LIU Yang，et al. Dynamic analysis and numerical simulation of fault slip instability induced by coal extraction[J]. Journal of China University of Mining and Technology，2016，45(1)：27-33.(in Chinese))
[9]	林远东，涂敏，付宝杰，等. 采动影响下断层稳定性的力学机理及其控制研究[J]. 煤炭科学技术，2019，47(9)：158-165.(LIN Yuandong，TU Min，FU Baojie，et al. Study on mechanics mechanism and control of fault stability under mining-induced influence[J]. Coal Science and Technology，2019，47(9)：158-165.(in Chinese))
[15]	王宏伟，王刚，张越，等. 动压影响下断层构造应力场和能量场分布特征[J]. 煤炭科学技术，2019，47(10)：183-189.(WANG Hongwei，WANG Gang，ZHANG Yue，et al. Stress field and energy field distribution characteristics of faults under dynamic pressure[J]. Coal Science and Technology，2019，47(10)：183-189.(in Chinese))
[16]	卢志国，鞠文君，赵毅鑫，等. 采动诱发应力主轴偏转对断层稳定性影响分析[J]. 岩土力学，2019，40(11)：4 459-4 466.(LU Zhiguo，JU Wenjun，ZHAO Yixin，et al. Analysis of the mining induced stress rotation influence on fault stability[J]. Rock and Soil Mechanics，2019，40(11)：4 459-4 466.(in Chinese))
[19]	VARDAR O，WEI C C，ZHANG C G，et al. Numerical investigation of impacts of geological faults on coal burst proneness during roadway excavation[J]. Bulletin of Engineering Geology and the Environment，2022，81(1)：9 529-9 541.
[20]	ZHANG J，GUO L L，MU W P，et al. Water-inrush risk through fault zones with multiple karst aquifers underlying the coal floor：a case study in the Liuzhuang Coal Mine，Southern China[J]. Mine Water and the Environment，2021，40(4)：1 037-1 047.
[25]	李季，马念杰，丁自伟. 基于主应力方向改变的深部沿空巷道非均匀大变形机理及稳定性控制[J]. 采矿与安全工程学报，2018，35(4)：670-676.(LI Ji，MA Nianjie，DING Ziwei. Heterogeneous large deformation mechanism based on change of principal stress direction in deep gob side entry and control[J]. Journal of Mining and Safety Engineering，2018，35(4)：670-676.(in Chinese))
[26]	庞义辉，王国法，李冰冰. 深部采场覆岩应力路径效应与失稳过程分析[J]. 岩石力学与工程学报，2020，39(4)：682-694.(PANG Yihui，WANG Guofa，LI Bingbing. Stress path effect and instability process analysis of overlying strata in deep stopes[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(4)：682-694.(in Chinese))