Study on failure evolution mechanism of coal seam floor in regional reconstruction based on micro-seismic and numerical simulation

YU Guofeng; HAN Yunchun; REN Bo; XU Yifan; FAN Jianxun; WANG Wei

doi:10.13347/j.cnki.mkaq.2023.11.020

Safety in Coal Mines > 2023 > 54(11): 150-157. > DOI: 10.13347/j.cnki.mkaq.2023.11.020

YU Guofeng, HAN Yunchun, REN Bo, et al. Study on failure evolution mechanism of coal seam floor in regional reconstruction based on micro-seismic and numerical simulation[J]. Safety in Coal Mines, 2023, 54（11）: 150−157. DOI: 10.13347/j.cnki.mkaq.2023.11.020

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Study on failure evolution mechanism of coal seam floor in regional reconstruction based on micro-seismic and numerical simulation

YU Guofeng^{1, 2,},
HAN Yunchun^{1, 2},
REN Bo^{1, 2},
XU Yifan^{1, 2},
FAN Jianxun³,
WANG Wei³

1.
Ping’an Coal Mining Engineering Technology Institute Co., Ltd., Huainan 232000, China
2.
State Key Laboratory of Deep Coal Mining & Environment Protection, Huainan 232000, China
3.
Ziguang Software System Co., Ltd., Beijing 100083, China

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Received Date: August 11, 2022
Available Online: November 21, 2023

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Abstract

Abstract

To reveal the evolution law of the failure depth of the floor under Group A coal seam with regional grouting in Huainan Mining Area, based on the geology and grouting process data of 12123 working face in Pan’er Coal Mine, the mining response under two working conditions of no-grouting and grouting was simulated and analyzed. The failure depth of the floor under different grouting radius was compared. According to the microseismic (MS) monitoring in the mining process, the cluster analysis of its concentration range was carried out by SPSS software. The floor failure from MS monitoring in the adjacent 1612A working face with similar geological conditions and without grouting was discussed. The research showed that, the failure depth of the floor under the grouting condition was significantly less than that without grouting, which preliminarily verified the grouting effect to maintain floor stability. The actual grouting radius in the floor area was 25-30 m. The difference of failure types before and after actual grouting was revealed, and the grouting effect on floor failure was verified again.
- Huainan Mining Area,
- confined groundwater,
- failure depth of floor,
- numerical simulation,
- micro-seismic monitoring

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References

[1]	许延春,李见波. 注浆加固工作面底板突水“孔隙-裂隙升降型”力学模型[J]. 中国矿业大学学报,2014,43(1):49−55. XU Yanchun, LI Jianbo. “Pore-fractured lifting type” mechanical model for floor water inrush of the grouting enforcement working face[J]. Journal of China University of Mining & Technology, 2014, 43(1): 49−55.
[2]	许延春,谢小锋,刘世奇,等. 注浆加固工作面底板岩体力学性质“增强-损伤”的定量测定[J]. 采矿与安全工程学报,2017,34(6):1186−1193. XU Yanchun, XIE Xiaofeng, LIU Shiqi, et al. Quantitative determination of mechanical property of“enhance-damage”for floor rock mass in grouting reinforcement working face[J]. Journal of Mining & Safety Engineering, 2017, 34(6): 1186−1193.
[3]	李见波,许延春,王新梅. 注浆加固套管抗弯性能对煤层底板变形的影响[J]. 采矿与安全工程学报,2017,34(2):338−341. LI Jianbo, XU Yanchun, WANG Xinmei. The effect of flexural behavior of the grouting reinforcement casing on coal seam floor deformation[J]. Journal of Mining & Safety Engineering, 2017, 34(2): 338−341.
[4]	陈军涛,张毅,武善元,等. 黄河北煤田顶底板定向注浆关键技术[J]. 煤矿安全,2021,52(5):104−111. CHEN Juntao, ZHANG Yi, WU Shanyuan, et al. Key technology of directional grouting in roof and floor ofcoal field in the north of the Yellow River[J]. Safety in Coal Mines, 2021, 52(5): 104−111.
[5]	李涛,高颖,艾德春,等. 基于承压水单孔放水实验的底板水害精准注浆防治[J]. 煤炭学报,2019,44(8):2494−2501. LI Tao, GAO Ying, AI Dechun, et al. Floor precise grouting of prevention and control of water based on confined water single-hole drainage experiment[J]. Journal of China Coal Society, 2019, 44(8): 2494−2501.
[6]	许延春,黄磊,俞洪庆,等. 基于注浆钻孔数据集的注浆工作面底板突水危险性评价体系[J]. 煤炭学报,2020,45(3):1150−159. XU Yanchun, HUANG Lei, YU Hongqing, et al. Evaluation system for floor water inrush risk in grout-reinforced working faces based on grouting boreholes dataset[J]. Journal of China Coal Society, 2020, 45(3): 1150−159.
[7]	尹尚先,王屹,尹慧超,等. 深部底板奥灰薄灰突水机理及全时空防治技术[J]. 煤炭学报,2020,45(5):1855−1864. YIN Shangxian, WANG Yi, YIN Huichao, et al. Mechanism and full-time-space prevention and control technology of water inrush from Ordovician and thin limestone in deep mines[J]. Journal of China Coal Society, 2020, 45(5): 1855−1864.
[8]	钱鸣高,缪协兴,许家林. 岩层控制中的关键层理论研究[J]. 煤炭学报,1996,21(3):225−230. QIAN Minggao, MIAO Xiexing, XU Jialin. Theoretical study of key stratum in ground control[J]. Journal of China Coal Society, 1996, 21(3): 225−230.
[9]	乔世范,檀俊坤,郭佳奇,等. 基于浆液稠度时空变化的盾构隧道壁后注浆扩散机制[J]. 中南大学学报(自然科学版),2021,52(3):713−724. QIAO Shifan, TAN Junkun, GUO Jiaqi, et al. Grouting diffusion mechanism after shield wall based on spatial and temporal variation of slurry consistency[J]. Journal of Central South University (Science and Technology), 2021, 52(3): 713−724.
[10]	王强,冯志强,王理想,等. 裂隙岩体注浆扩散范围及注浆量数值模拟[J]. 煤炭学报,2016,41(10):2588−2595. WANG Qiang, FENG Zhiqiang, WANG Lixiang, et al. Numerical analysis of grouting radius and grout quantity in fractured rock mass[J]. Journal of China Coal Society, 2016, 41(10): 2588−2595.
[11]	张嘉凡,覃祥瑞,刘洋,等. 注浆对粗糙裂隙煤岩体应力场的影响分析[J]. 煤矿安全,2021,52(10):166−170. ZHANG Jiafan, QIN Xiangrui, LIU Yang, et al. Analysis of the influence of grouting on stress field of coal and rock mass with rough crack[J]. Safety in Coal Mines, 2021, 52(10): 166−170.
[12]	高银贵,孔皖军,安士凯,等. 唐家会矿奥灰水害区域治理试验工程及防控技术[J]. 煤矿安全,2022,53(3):91−95. GAO Yingui, KONG Wanjun, AN Shikai, et al. Experimental project and prevention and control technology of Ordovician limestone water disaster in Tangjiahui Coal Mine[J]. Safety in Coal Mines, 2022, 53(3): 91−95.
[13]	任波,余国峰,牟文强,等. 煤层底板破碎带区域注浆围岩稳定性分析[J]. 煤矿安全,2021,52(10):171−176. REN Bo, YU Guofeng, MU Wenqiang, et al. Stability analysis of grouting surrounding rock in fracture zone in coal seam floor[J]. Safety in Coal Mines, 2021, 52(10): 171−176.
[14]	陆银龙,王连国. 含断层煤层底板损伤破坏演化数值模拟及微震监测研究[J]. 采矿与安全工程学报,2013,30(1):38−44. LU Yinlong, WANG Lianguo. Modeling and microseismic monitoring of damage and failure evolution of faulty coal seam floor[J]. Journal of Mining & Safety Engineering, 2013, 30(1): 38−44.
[15]	孙建,王连国,唐芙蓉,等. 倾斜煤层底板破坏特征的微震监测[J]. 岩土力学,2011,32(5):1589−1595. SUN Jian, WANG Lianguo, TANG Furong, et al. Microseismic monitoring failure characteristics of inclined coal seam floor[J]. Rock and Soil Mechanics, 2011, 32(5): 1589−1595.
[16]	王朋朋,赵毅鑫,姜耀东,等. 邢东矿深部带压开采底板突水特征及控制技术[J]. 煤炭学报,2020,45(7):2444−2454. WANG Pengpeng, ZHAO Yixin, JIANG Yaodong, et al. Characteristics and control technology of water inrush from deep coal seam floor above confined aquifer in Xingdong Coal Mine[J]. Journal of China Coal Society, 2020, 45(7): 2444−2454.
[17]	张蕊,姜振泉,于宗仁,等. 煤层底板采动破坏特征综合测试及数值模拟研究[J]. 采矿与安全工程学报,2013,30(4):531−537. ZHANG Rui, JIANG Zhenquan, YU Zongren, et al. Comprehensive testing and numerical analysis on the failure characteristics of mining coal seam floor[J]. Journal of Mining & Safety Engineering, 2013, 30(4): 531−537.
[18]	孙建. 沿煤层倾斜方向底板“三区”破坏特征分析[J]. 采矿与安全工程学报,2014,31(1):115−121. SUN Jian. Failure characteristics of floor “three-zone” along the inclined direction of coal seam[J]. Journal of Mining & Safety Engineering, 2014, 31(1): 115−121.
[19]	翟晓荣. 矿井深部煤层底板采动效应的岩体结构控制机理研究[D]. 淮南: 安徽理工大学, 2015.
[20]	李林,顾伟,宋刚. 松软破碎煤巷深浅孔联合注浆加固技术[J]. 煤矿安全,2021,52(9):108−115,121. LI Lin, GU Wei, SONG Gang. Combined grouting and reinforcement technology for deep and shallow holes in soft and broken coal roadway[J]. Safety in Coal Mines, 2021, 52(9): 108−115,121.
[21]	许昌毓,韩立军,田茂霖,等. 耦合注浆加固机理及围岩力学参数位移反分析[J]. 煤矿安全,2020,51(11):155−160. XU Changyu, HAN Lijun, TIAN Maolin, et al. Coupled grouting reinforcement mechanism and displacement back analysis of mechanical parameters of surrounding rock[J]. Safety in Coal Mines, 2020, 51(11): 155−160.
[22]	DAI Feng, LI Biao, XU Nuwen, et al. Deformation forecasting and stability analysis of large-scale underground powerhouse caverns from microseismic monitoring[J]. International Journal of Rock Mechanics and Mining Sciences, 2016, 86: 269−281. doi: 10.1016/j.ijrmms.2016.05.001

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Study on failure evolution mechanism of coal seam floor in regional reconstruction based on micro-seismic and numerical simulation