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WANG Gaoang, ZHU Sitao, ZUO Erning, YANG Guangyu, WANG Baoqi, ZHOU Tao, KONG Zhen. Study on Rock Burst Mechanism of Isolated Downhill Coal Body in Thick Coal Seam of Ultra Deep Well[J]. Safety in Coal Mines, 2019, 50(8): 63-66，71.
Citation: WANG Gaoang, ZHU Sitao, ZUO Erning, YANG Guangyu, WANG Baoqi, ZHOU Tao, KONG Zhen. Study on Rock Burst Mechanism of Isolated Downhill Coal Body in Thick Coal Seam of Ultra Deep Well[J]. Safety in Coal Mines, 2019, 50(8): 63-66，71.
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Study on Rock Burst Mechanism of Isolated Downhill Coal Body in Thick Coal Seam of Ultra Deep Well

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  • Published Date: August 19, 2019
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  • To study the mechanism of isolated coal body impact instability caused by roadway cutting, the impact rock burst accident in the 32nd mining area of Gucheng Coal Mine was taken as the engineering background. Through the field investigation, numerical simulation and theoretical analysis, the isolated coal body after roadway pressure relief was studied. The stress evolution law is established. The model of the bearing capacity of the isolated coal body after the pressure relief of the roadway and the simplified model of the bearing pressure distribution are established. The mechanism of the overall instability of the isolated coal body in the ultra-deep well is revealed: the stress concentration is in the isolated coal body elastic load zone after the pressure relief of roadway, when the average supporting pressure of the isolated coal body after the concentrated stress and other stresses such as mining activities exceed the impact threshold, the impact is easily induced. Based on this, the criterion of the overall instability impact mechanics of the isolated coal body is proposed. The accident case and numerical simulation calculation verify the correctness of the theoretical calculation. On this basis, specific prevention measures for reducing the average supporting pressure of isolated coal and strengthening the comprehensive compressive strength of surrounding rock of roadway are proposed.
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    • References (10)
  • [1]
    姜耀东,赵毅鑫.我国煤矿冲击地压的研究现状:机制、预警与控制[J].岩石力学与工程学报,2015,34(11):2188-2204.
    [2]
    朱斯陶,姜福兴,朱海洲,等.高应力区掘进工作面冲击地压事故发生机制研究[J].岩土力学,2018,39(S2):337-343.
    [3]
    王春秋,高立群,陈绍杰,等.条带煤柱长期承载能力实测研究[J].采矿与安全工程学报,2013,30(6):799-804.
    [4]
    曹胜根,曹洋,姜海军.块段式开采区段煤柱突变失稳机理研究[J].采矿与安全工程学报,2014,31(6):907-913.
    [5]
    魏全德,姜福兴,姚顺利,等.特厚煤层下山煤柱区巷道冲击危险性实时监测预警研究[J].采矿与安全工程学报,2015,32(4):530-536.
    [6]
    杨永杰,段会强,刘传孝,等.考虑长期稳定性的深井采区上山保护煤柱合理留设[J].采矿与安全工程学报,2017,34(5):921-927.
    [7]
    张明,姜福兴,李家卓,等.基于巨厚岩层-煤柱协同变形的煤柱稳定性[J].岩土力学,2018,39(2):705.
    [8]
    宋艳芳,潘一山,李忠华,等.孤立煤柱冲击地压蠕变失稳研究[J].煤矿安全,2018,49(5):47-50.
    [9]
    钱鸣高,石平五,许家林.矿山压力与岩层控制 [M].2版.徐州:中国矿业大学出版社,2010:221-224.
    [10]
    姜福兴,成功,冯宇,等.两侧不规则采空区孤岛工作面煤体整体冲击失稳研究[J].岩石力学与工程学报,2015,34(S2):4164-4170.
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