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| Linkage instability mechanism of composite structure of super-thick topsoil and sawtooth fault coal pillar |
| ZHANG Xiang1, ZHU Sitao1, 2, LIU Jinhai1, JIANG Fuxing1, LI Shidong3, ZHOU Tao3,KONG Zhen3, QU Xiaocheng4 |
(1. School of Civil and Resource Engineering, Beijing University of Science and Technology, Beijing 100083, China; 2. Shandong Energy Group Co., Ltd., Jinan, Shandong 250014, China; 3. Zhaolou Coal Mine of Yanzhou Mining Group Co., Ltd., Heze,
Shandong 274000, China; 4. Beijing Anke Xingye Technology Co., Ltd., Beijing 100083, China)
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Abstract 表土–煤柱结构联动失稳是巨野煤田深部矿井主要的冲击地压类型之一，其发生机制尚未完全明确。以巨野煤田赵楼煤矿七采区FZ14断层锯齿保护煤柱为工程背景，采用相似材料试验、数值模拟、理论分析、现场实测等方法，系统研究巨厚表土–锯齿断层煤柱组合的协调变形特征、载荷传递规律、联动失稳机制。采用相似试验研究了走向连续推采条件下采场后方围岩的巨厚表土载荷加载规律，分析了基岩拱脚与土拱结构的联动模式及对应运动阶段的采场应力演化趋势。通过数值模拟研究了倾向顺序接续条件下巨厚表土–断层煤柱结构的空间形态特征，分析了巨厚表土运动成拱过程与断层上下盘煤柱变形与受力的对应关系。基于相似试验及数值模拟结果，通过理论分析建立巨厚表土–断层煤柱协调变形模型，并推导组合结构发生断层煤柱整体失稳型和巨厚表土应力加载型冲击地压的工程判据，基于此设计了锯齿煤柱上覆承载基岩自重载荷和断层煤柱临界应力的量化方法。结合工程实践应用结果，分析了巨厚表土–锯齿断层煤柱结构失稳诱冲发生机制：下盘采场回采形成的土拱结构传递载荷导致断层煤柱承载应力高度集中，当其上覆载荷超过弹核区临界应力时即发生整体失稳型冲击地压；同时，断层煤岩柱压缩下沉引起土拱结构扩大上移，当破坏高度超过其自稳厚度时巨厚表土迅速向下加载引起应力加载型冲击地压。根据巨野煤田采场巨厚表土–锯齿断层煤柱结构的“震动场–应力场–位移场”监测结果，设计了“近场基岩微震监测–回采煤层应力反演–远场表土沉降观测”联合监测方法。
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[1] 潘一山，宋义敏，刘 军. 我国煤矿冲击地压防治的格局、变局和新局[J]. 岩石力学与工程学报，2023，42(9)：2 081–2 095.(PAN Yishan，SONG Yimin，LIU Jun. Pattern，change and new situation of coal mine rockburst prevention and control in China[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(9)：2 081–2 095.(in Chinese))
[2] 窦林名，田鑫元，曹安业，等. 我国煤矿冲击地压防治现状与难题[J]. 煤炭学报，2022，47(1)：152–171.(DOU Linming，TIAN Xinyuan，CAO Anye，et al. Present situation and problems of prevention and control of coal mine rockburst in China[J]. Journal of China Coal Society，2022，47(1)：152–171.(in Chinese))
[3] 齐庆新，马世志，孙希奎，等. 煤矿冲击地压源头防治理论与技术架构[J]. 煤炭学报，2023，48(5)：1 861–1 874.(QI Qingxin，MA Shizhi，SUN Xikui，et al. Theory and technical framework of coal mine rock burst origin prevention[J]. Journal of China Coal Society，2023，48(5)：1 861–1 874.(in Chinese))
[4] 谭云亮，张修峰，肖自义，等. 冲击地压主控因素及孕灾机制[J]. 煤炭学报，2024，49(1)：367–379.(TAN Yuliang，ZHANG Xiufeng，XIAO Ziyi，et al. Main control factors of rock burst and disaster–prone mechanism[J]. Journal of China Coal Society，2024，49(1)：367–379. (in Chinese))
[5] 潘俊锋，夏永学，王书文，等. 我国深部冲击地压防控工程技术难题及发展方向[J]. 煤炭学报，2024，49(3)：1 291–1 302.(PAN Jufeng，XIA Yongxue，WANG Shuwen，et al. Technical problems and development direction of deep rockburst prevention and control engineering in China[J]. Journal of China Coal Society，2024，49(3)：1 291–1 302. (in Chinese))
[6] 姜福兴，张 翔，朱斯陶. 煤矿冲击地压防治体系中的关键问题探讨[J]. 煤炭科学技术，2023，51(1)：203–213.(JIANG Fuxing，ZHANG Xiang，ZHU Sitao. Discussion on key problems in prevention and control system of coal mine rock burst[J]. Coal Science and Technology，2023，51(1)：203–213.(in Chinese))
[7] 孟祥军，张广超，李 友，等. 深厚表土覆岩结构运移演化及高应力突变致灾机制[J]. 煤炭学报，2023，48(5)：1 919–1 931.(MENG Xiangjun，ZHANG Guangchao，LI You，et al. Migration and evolution of overburden structure in deep overburden and disaster-causing mechanism of high stress mutation[J]. Journal of China Coal Society，2023，48(5)：1 919–1 931.(in Chinese))
[8] 张 翔，朱斯陶，姜福兴，等. 深厚表土综放采场应力加载型冲击地压机制[J]. 煤炭学报，2023，48(5)：2 092–2 105.(ZHANG Xiang，ZHU Sitao，JIANG Fuxing，et al. Mechanism of stress-loaded rockburst in fully mechanized top-coal caving face with deep topsoil[J]. Journal of China Coal Society，2023，48(5)：2 092–2 105.(in Chinese))
[9] 张平松，许时昂，傅先杰，等. 煤层采动巨厚松散层全断面监测及内部变形特征[J]. 煤炭学报，2024，49(1)：628–644.(ZHANG Pingsong，XU Shiang，FU Xianjie，et al. Full-face monitoring and internal deformation characteristics of extremely thick loose layer in coal seam mining[J]. Journal of China Coal Society，2024，49(1)：628–644.(in Chinese))
[10] 来兴平，张旭东，单鹏飞，等. 厚松散层下三软煤层开采覆岩导水裂隙发育规律[J]. 岩石力学与工程学报，2021，40(9)：1 739–1 750. (LAI Xingping，ZHANG Xudong，SHAN Pengfei，et al. Development law of water-conducting cracks in overlying strata of three soft coal seams under thick loose layer[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(9)：1 739–1 750. (in Chinese))
[11] 彭世龙，程 桦，姚直书，等. 厚松散层底含直覆薄基岩开采地表沉陷预计及特征研究[J]. 煤炭学报，2022，47(12)：4 417–4 430. (PENG Shilong，CHENG Ye，YAO Zhishu，et al. Study on prediction and characteristics of surface subsidence in mining with thick loose layer and directly covered thin bedrock at the bottom[J]. Journal of China Coal Society，2022，47(12)：4 417–4 430.(in Chinese))
[12] WANG X R，GUAN K，YANG T H，et al. Instability mechanism of pillar burst in asymmetric mining based on cusp catastrophe model[J]. Rock Mechanics and Rock Engineering，2021，54(3)：1 463–1 479.
[13] 曹安业，陈 凡，刘耀琪，等. 冲击地压频发区矿震破裂机制与震源参量响应规律[J]. 煤炭学报，2022，47(2)：722–733.(CAO Anye，CHEN Fan，LIU Yaoqi，et al. Fracture mechanism of mine earthquake and response law of focal parameters in frequent rockburst areas[J]. Journal of China Coal Society，2022，47(2)：722–733.(in Chinese))
[14] SONG C H，LU C P，ZHANG X F，et al. Moment tensor inversion and stress evolution of coal pillar failure mechanism[J]. Rock Mechanics and Rock Engineering，2022，55：2 371–2 383.
[15] 张俊文，董续凯，柴海涛，等. 地质异常区域多工作面开采结构演化及冲击地压防治[J]. 煤炭科学技术，2023，51(2)：95–105. (ZHANG Junwen，DONG Xukai，CHAI Haitao，et al. Evolution of mining structure and prevention of rock burst in multi-working faces in geological abnormal areas[J]. Coal Science and Technology，2023，51(2)：95–105. (in Chinese))
[16] CAI W，DOU L M，SI G Y，et al. Fault-induced coal burst mechanism under mining-induced static and dynamic stresses[J]. Engineering，2021，7(5)：14.
[17] 潘俊锋，康红普，闫耀东，等. 顶板“人造解放层”防治冲击地压方法、机制及应用[J]. 煤炭学报，2023，48(2)：636–648.(PAN Junfeng，KANG Hongpu，YAN Yaodong，et al. Method，mechanism and application of roof“artificial liberation layer”to prevent rockburst[J]. Journal of China Coal Society，2023，48(2)：636–648.(in Chinese))
[18] 孙文斌，薛延东，杨 辉，等. 工作面回采对断层裂隙带应力扰动规律及注浆加固机制研究[J]. 岩石力学与工程学报，2023，42(11)：2 668–2 681.(SUN Wenbin，XUE Yandong，YANG Hui，et al. Study on stress disturbance law of working face mining on fault fracture zone and grouting reinforcement mechanism[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(11)：2 668–2 681.(in Chinese))
[19] 吕进国，韩文鹤，张学朋，等. 采动影响下坚硬岩桥型断层活化与储能演变规律[J]. 煤炭学报，2025，50(2)：902–916.(LU Jinguo，HAN Wenhe，ZHANG Xuepeng，et al. Evolution law of activation and energy storage of bridge fault in hard rock under the influence of mining[J]. Journal of China Coal Society，2025，50(2)：902–916.(in Chinese))
[20] 王宏伟，田 政，王 晴，等. 采动诱发断层覆岩耦合失稳的突变效应[J]. 煤炭学报，2023，48(8)：2 961–2 975.(WANG Hongwei，TIAN Zheng，WANG Qing，et al. Catastrophe effect of coupling instability of fault overburden induced by mining[J]. Journal of China Coal Society，2023，48(8)：2 961–2 975.(in Chinese))
[21] 谭云亮，张修峰，肖自义，等. 冲击地压主控因素及孕灾机制[J]. 煤炭学报，2024，49(1)：367–379.(TAN Yunliang，ZHANG Xiufeng，XIAO Ziyi，et al. Main control factors of rock burst and disaster-prone mechanism[J]. Journal of China Coal Society，2024，49(1)：367–379. (in Chinese))
[22] 王高昂，朱斯陶，姜福兴，等. 倾斜厚煤层综放工作面煤柱–关键层结构失稳型矿震机制[J]. 煤炭学报，2022，47(6)：2 289–2 299. (WANG Gaoang，ZHU Sitao，JIANG Fuxing，et al. Mechanism of coal pillar-key layer structure instability in fully mechanized top-coal caving face in inclined thick coal seam[J]. Journal of China Coal Society，2022，47(6)：2 289–2 299.(in Chinese))
[23] 刘金海，姜福兴，朱斯陶，等. 典型深厚表土煤层冲击地压模式研究[J]. 煤炭学报，2020，45(5)：1 753–1 763.(LIU Jinhai，JIANG Fuxing，ZHU Sitao，et al. Study on rockburst model of typical deep overburden coal seam[J]. Journal of China Coal Society，2020，45(5)：1 753–1 763.(in Chinese))
[24] 阿比尔的，郑颖人，冯夏庭，等. 平行黏结模型宏细观力学参数相关性研究[J]. 岩土力学，2018，39(4)：1 289–1 301.(ABI Erdi，ZHENG Yingren，FENG Xiating，et al. Relationship between particle micro and macro mechanical parameters of parallel-bond model[J]. Rock and Soil Mechanics，2018，39(4)：1 289–1 301.(in Chinese))
[25] 张 翔，朱斯陶，姜福兴，等. 深厚表土综放采场应力加载型冲击地压机制[J]. 煤炭学报，2023，48(5)：2 092–2 105.(ZHANG Xiang，ZHU Sitao，JIANG Fuxing，et al. Mechanism of stress-loaded rockburst in fully mechanized top-coal caving face with deep topsoil[J]. Journal of China Coal Society，2023，48(5)：2 092–2 105. (in Chinese))
[26] 马玉镇，高永涛，朱斯陶，等. 煤矿地面水力压裂防冲机制及效果评价方法研究[J]. 煤炭学报，2024，49(11)：4 390–4 405.(MA Yuzhen，GAO Yongtao，ZHU Sitao，et al. Research on the mechanism and evaluation method of rock burst prevention in coal mines using surface hydraulic fracturing[J]. Journal of China Coal Society，2024，49(11)：4 390–4 405.(in Chinese)) |
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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2025, Vol. 44 
