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ZHANG Tianlu,JU Minghe,LU Fangzhou,et al. Study on the influence of lateral stress on fracture instability and impact of static load coal roadway[J]. China Mining Magazine,2024,33(8):136-146. DOI: 10.12075/j.issn.1004-4051.20240407
Citation: ZHANG Tianlu,JU Minghe,LU Fangzhou,et al. Study on the influence of lateral stress on fracture instability and impact of static load coal roadway[J]. China Mining Magazine,2024,33(8):136-146. DOI: 10.12075/j.issn.1004-4051.20240407

Study on the influence of lateral stress on fracture instability and impact of static load coal roadway

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  • Received Date: March 19, 2024
  • Revised Date: April 27, 2024
  • Accepted Date: April 28, 2024
  • Available Online: August 13, 2024
  • It is of great significance to carry out the research on concentrated static load type rock burst to reveal the occurrence process of rock burst events under static load in solid coal roadway and improve the design scheme of roadway support. Based on the research background of roadway instability and failure under the horizontal stress of the return wind groove of 6126−1 longwall working face in Gansu Province, China. The influence of lateral stress on the instability failure and impact hazard of coal roadway during the slow migration and superposition of overlying load is studied through the self-designed loading system of coal roadway structure. In the experiment, three lateral stress levels of 0 MPa, 2.2 MPa and 4.5 MPa are preset to simulate the near-field lateral pressure of the coal roadway, and the acoustic emission and camera system are used to capture the structural instability process of the coal roadway, and the mechanism of gradual failure and impact disaster of the coal roadway under different lateral stresses is discussed. The results show that the instability and impact processes of coal roadway and coal sample(column) under overlying static load are different, and the elastic brittle failure coal sample shows obvious post-peak strain softening characteristics in the coal roadway structure, resulting in the impact tendency of the coal roadway structure is reduced compared with that of the coal sample(column), but the high lateral stress will significantly increase the impact risk of the coal roadway. There are also obvious differences in the crack evolution law, and the proportion of shear cracks reaches the maximum value around the peak stress of 50% in the crack pre-peak transition from tensile to shear crack mode in the coal gang failure process, and the larger the lateral stress, the smaller the transition degree of shear crack mode before and after the peak, and the higher the proportion of shear cracks. According to the research results, the on-site roadway anti-erosion and pressure relief and support scheme are optimized, which provides engineering reference for the prevention and control of rock burst in coal roadway under similar conditions.

  • [1]
    齐庆新, 刘天泉, 史元伟, 等. 冲击地压的摩擦滑动失稳机理[J]. 矿山压力与顶板管理,1995,12(S1):174-177, 200.

    QI Qingxin, LIU Tianquan, SHI Yuanwei, et al. Mechanism of fraction sliding instability of rock burst[J]. Journal of Mining and Safety Engineering,1995,12(S1):174-177, 200.
    [2]
    智国军, 霍晓林, 程叶. 采空区侧向压力对巷道稳定性影响分析[J]. 山东工业技术,2019(5):100-101.

    ZHI Guojun, HUO Xiaolin, CHENG Ye. Analysis of the influence of goaf lateral pressure on roadway stability[J]. Shandong Industrial Technology,2019(5):100-101.
    [3]
    黄锋, 朱涛, 刘星辰, 等. 侧压系数对高应力破碎区隧道结构受力影响的试验研究[J]. 铁道学报,2023,45(12):174-181. doi: 10.3969/j.issn.1001-8360.2023.12.019

    HUANG Feng, ZHU Tao, LIU Xingchen, et al. Experimental study on influence of lateral pressure coefficient on stress of tunnel structure in high stress fracture area[J]. Journal of the China Railway Society,2023,45(12):174-181. doi: 10.3969/j.issn.1001-8360.2023.12.019
    [4]
    王海龙, 王琦, 赵振华, 等. 采空区冒落矸石承压变形特征及侧向压力分布规律研究[J]. 煤炭科学技术,2023,51(6):20-29.

    WANG Hailong, WANG Qi, ZHAO Zhenhua, et al. Study on bearing deformation characteristics and lateral pressure distribution law of caved gangue in gob[J]. Coal Science and Technology,2023,51(6):20-29.
    [5]
    王文新, 张锦宏. 大采高综采工作面侧向支承压力分布规律研究[J]. 煤炭科学技术,2017,45(S1):19-22, 33.

    WANG Wenxin, ZHANG Jinhong. Study on the distribution law of lateral support pressure in the working face of large-scale fully mechanized mining[J]. Coal Science and Technology,2017,45(S1):19-22, 33.
    [6]
    吴宏斌, 刘阳, 王桂峰, 等. 基于离散元的动载冲击地压巷道围岩稳定性分析[J]. 中国矿业,2022,31(6):118-123. doi: 10.12075/j.issn.1004-4051.2022.06.010

    WU Hongbin, LIU Yang, WANG Guifeng, et al. Stability analysis of surrounding rock of roadway under dynamic load rock burst based on discrete element method[J]. China Mining Magazine,2022,31(6):118-123. doi: 10.12075/j.issn.1004-4051.2022.06.010
    [7]
    于光远, 张艳博, 梁鹏, 等. 不同侧压条件下花岗岩巷道岩爆声发射特征实验研究[J]. 中国矿业,2016,25(5):82-86. doi: 10.3969/j.issn.1004-4051.2016.05.021

    YU Guangyuan, ZHANG Yanbo, LIANG Peng, et al. Experimental study on acoustic emission characteristics of granite tunnel rock burst under different lateral pressure[J]. China Mining Magazine,2016,25(5):82-86. doi: 10.3969/j.issn.1004-4051.2016.05.021
    [8]
    张艳博, 李健, 刘祥鑫, 等. 侧压对巷道岩爆声发射及损伤特性影响试验研究[J]. 地下空间与工程学报,2016,12(5):1192-1197.

    ZHANG Yanbo, LI Jian, LIU Xiangxin, et al. Experimental study of influence of lateral pressure on the characteristics of acoustic emission and damage during the rock burst of tunnel[J]. Chinese Journal of Underground Space and Engineering,2016,12(5):1192-1197.
    [9]
    马兴印, 公绪飞, 卞立国, 等. 双轴加载条件下红砂岩基本力学特性及破坏机制[J]. 山东科技大学学报(自然科学版),2022,41(3):58-65.

    MA Xingyin, GONG Xufei, BIAN Liguo, et al. Basic mechanical properties and failure mechanism of red sandstone under biaxial loading condition[J]. Journal of Shandong University of Science and Technology(Natural Science),2022,41(3):58-65.
    [10]
    王学滨, 马冰, 张智慧, 等. 不同轴压/侧压下逐步开挖马蹄形巷道围岩分区破裂化数值模拟[J]. 防灾减灾工程学报,2019,39(5):827-834.

    WANG Xuebin, MA Bing, ZHANG Zhihui, et al. Numerical simulation on zonal disintegration of surrounding rock of U-shaped tunnel under progressive excavation and different rations of axial pressure to lateral pressure[J]. Journal of Disaster Prevention and Mitigation Engineering,2019,39(5):827-834.
    [11]
    李桂锋, 张仰龙. 水平应力对深部煤层回采巷道冲击地压影响研究[J]. 内蒙古煤炭经济, 2019(13): 89, 109.

    LI Guifeng, ZHANG Yanglong. Study on the influence of horizontal stress on rock burst in deep coal seam mining roadway[J]. Inner Mongolia Coal Economy, 2019(13): 89, 109.
    [12]
    何富连, 郑铮, 杨增强, 等. 不同侧压系数对巷道底板变形破坏影响及防治研究[J]. 煤炭工程,2017,49(9):105-109. doi: 10.11799/ce201709028

    HE Fulian, ZHENG Zheng, YANG Zengqiang, et al. Study on influence of lateral pressure coefficient on floor deformation and the prevention technology[J]. Coal Engineering,2017,49(9):105-109. doi: 10.11799/ce201709028
    [13]
    刘永立, 丛利, 王振锁. 高静载回采巷道矿压的显现规律及其防治[J]. 黑龙江科技大学学报,2021,31(5):531-537. doi: 10.3969/j.issn.2095-7262.2021.05.001

    LIU Yongli, CONG Li, WANG Zhensuo. Mine pressure behavior law behind mining roadways with high static load and their prevention and control[J]. Journal of Heilongjiang University of Science and Technology,2021,31(5):531-537. doi: 10.3969/j.issn.2095-7262.2021.05.001
    [14]
    王传朋. 煤矿静载型冲击地压地音监测预警技术[J]. 煤炭科学技术,2021,49(6):94-101.

    WANG Chuanpeng. Monitoring and warning technology of acoustic emission in static loading rock burst of coal mine[J]. Coal Science and Technology,2021,49(6):94-101.
    [15]
    郭红军, 陈晶晶, 陈朋磊, 等. 实体煤巷道静载型冲击孕育数值模拟研究[J]. 能源与环保,2021,43(7):7-13.

    GUO Hongjun, CHEN Jingjing, CHEN Penglei, et al. Research on numerical simulation of rockburst gestation in solid coal roadway excavation[J]. China Energy and Environmental Protection,2021,43(7):7-13.
    [16]
    ZHANG W, GUO W Y, WANG Z Q. Influence of lateral pressure on mechanical behavior of different rock types under biaxial compression[J]. Journal of Central South University,2022,29(11):3695-3705. doi: 10.1007/s11771-022-5196-1
    [17]
    武成家, 秦涛, 刘振文, 等. 不同冲击倾向性煤样力学特性与能量演化规律研究[J]. 中国矿业,2021,30(2):160-166. doi: 10.12075/j.issn.1004-4051.2021.02.010

    WU Chengjia, QIN Tao, LIU Zhenwen, et al. Study on mechanical properties and energy evolution law of coal samples with different impact tendency[J]. China Mining Magazine,2021,30(2):160-166. doi: 10.12075/j.issn.1004-4051.2021.02.010
    [18]
    张坤, 方海, 李邵东, 等. 大埋深坚硬顶板厚煤层冲击地压微震监测及防治措施[J]. 中国矿业,2021,30(10):77-83. doi: 10.12075/j.issn.1004-4051.2021.10.017

    ZHANG Kun, FANG Hai, LI Shaodong, et al. Microseismic monitoring and prevention of working face rockburst in thick coal seam with hard roof and large buried depth[J]. China Mining Magazine,2021,30(10):77-83. doi: 10.12075/j.issn.1004-4051.2021.10.017
    [19]
    OHTSU M. Quantitative AE techniques standardized for concrete structures[J]. Advanced Materials Research,2006,13-14:183-192. doi: 10.4028/www.scientific.net/AMR.13-14.183
    [20]
    昝军才, 陈跟马, 林建成, 等. 高地压巷道动力显现区域围岩稳定性的钻孔窥视分析及对策[J]. 中国矿业,2020,29(8):91-97, 121. doi: 10.12075/j.issn.1004-4051.2020.08.004

    ZAN Juncai, CHEN Genma, LIN Jiancheng, et al. Analysis and countermeasures of the peepholes for surrounding rock stability in high earth pressure roadway[J]. China Mining Magazine,2020,29(8):91-97, 121. doi: 10.12075/j.issn.1004-4051.2020.08.004
    [21]
    赵志强. 大变形回采巷道围岩变形破坏机理与控制方法研究[D]. 北京: 中国矿业大学(北京), 2011.
    [22]
    GAO F Q, YANG L. Experimental and numerical investigation on the role of energy transition in strainbursts[J]. Rock Mechanics and Rock Engineering,2021,54:5057-5070. doi: 10.1007/s00603-021-02550-8
    [23]
    潘俊锋, 宁宇, 毛德兵, 等. 煤矿开采冲击地压启动理论[J]. 岩石力学与工程学报,2012,31(3):586-596. doi: 10.3969/j.issn.1000-6915.2012.03.017

    PAN Junfeng, NING Yu, MAO Debing, et al. Theory of rockburst start up during coal mining[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(3):586-596. doi: 10.3969/j.issn.1000-6915.2012.03.017
    [24]
    翟明华, 刘金海, 田昭军, 等. 深井综放工作面侧向支承压力分布及冲击危险性评价[J]. 煤炭科学技术,2017,45(12):19-22.

    ZHAI Minghua, LIU Jinhai, TIAN Zhaojun, et al. Survey on side abutment pressure distribution and rock burst risk evaluation in deep fully mechanized caving face[J]. Coal Science and Technology,2017,45(12):19-22.

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