煤炭工程 ›› 2026, Vol. 58 ›› Issue (2): 126-135.doi: 10.11799/ce202602016

• 研究探讨 • 上一篇    下一篇

充填开采坚硬顶板工作面冲击地压动静载控制机制及防治技术研究 #br#

李家卓,杨晓东,谭文峰,佟 朋,阚吉亮,任文涛,李增强,王 剑,李崧岳   

  1. 1. 安徽理工大学 矿业工程学院,安徽 淮南 232001

    2. 山东能源集团 西北矿业有限公司,陕西 西安 710018

    3. 陕西未来能源化工有限公司 金鸡滩煤矿, 陕西 榆林 719000

    4. 山东能源鲁西矿业有限公司,山东 菏泽 274900

    5. 山东东山古城煤矿有限公司,山东 济宁 272000

    6. 枣庄矿业集团高庄煤业有限公司,山东 济宁 272000

  • 收稿日期:2025-06-27 修回日期:2025-08-23 出版日期:2026-02-15 发布日期:2026-03-16
  • 通讯作者: 李家卓 E-mail:hangqiu0808@126.com

Control mechanism and prevention technology for dynamic and static loads in rockburst prevention of backfill mining faces with hard roofs

  • Received:2025-06-27 Revised:2025-08-23 Online:2026-02-15 Published:2026-03-16
  • Contact: ZHOU JiaLI E-mail:hangqiu0808@126.com

摘要:

工作面回采过程中坚硬顶板破断产生的强动载和大埋深导致的高应力叠加是冲击地压的主要诱因,为探究充填开采对冲击地压动静载源头控制效应,通过理论计算和现场监测的方法,研究了工作面在不同充实率下顶板破断高度演化规律与支承压力分布特征,提出了针对充填开采的冲击地压分类防治技术,并在古城煤矿深部坚硬顶板工作面进行了应用,通过现场微震监测检验了防冲效果。研究结果表明:充填工作面存在最优充实率且达到最优充实率后,坚硬顶板运动模式由周期性破断转变为弯曲下沉使顶板破断动载大幅度减小,顶板破断高度降低使支承压力峰值减小。古城煤矿1123工作面未达到最优充实率,采取坚硬顶板预裂爆破、顶煤支护、厚顶煤高压注浆和大直径钻孔措施;1#工作面达到最优充实率,取消爆破断顶卸压措施,仅采取煤体大直径钻孔及对特殊区域的卸压措施。两工作面采取卸压措施后,1123工作面充实率由70%逐渐提高至90%,工作面顶板微震事件由“低频次、高能量”转变为“高频次、低能量”;1#工作面顶板微震事件呈“低频次、低能量”特征。

关键词: 冲击地压, 坚硬顶板, 充填开采, 充实率, 动静载源头, 分类防治

Abstract:

The strong dynamic load caused by the hard roof breaking and the high stress superposition caused by the large buried depth during the mining process of the working face are the main causes of the rock burst, and the filling mining is an effective means to control the roof breaking. In order to explore the control effect of filling mining on the dynamic and static load source of rock burst, the evolution law of roof breaking height and the distribution characteristics of abutment pressure under different filling rates were studied by theoretical calculation and field monitoring. The classification prevention and control technology of rock burst for filling mining was put forward, which was applied in the deep hard roof working face of Gucheng Coal Mine, and the anti-impact effect was tested by on-site microseismic monitoring. The results show that there is an optimal filling rate in the filling face and after reaching the optimal filling rate, the movement mode of the hard roof changes from periodic breaking to bending sinking, which greatly reduces the dynamic load of the roof breaking, and the reduction of the roof breaking height reduces the peak value of the abutment pressure. The 1123 working face of Gucheng Coal Mine did not reach the optimal filling rate, and the measures of pre-splitting blasting of hard roof, top coal support, high-pressure grouting of thick top coal and large-diameter drilling were taken. The 1 # working face reached the optimal filling rate, the blasting roof breaking pressure relief measures were cancelled, and only the large diameter drilling of coal body and the pressure relief measures in special areas were adopted. After the pressure relief measures were taken in the two working faces, the filling rate of the 1123 working face gradually increased from 70 % to 90 %, and the microseismic events of the roof of the working face changed from “low frequency and high energy ” to “high frequency and low energy ” ; the roof microseismic events of 1 # working face are characterized by “low frequency and low energy ”. The research results can provide theoretical guidance for the mining and anti-impact technology of hard roof working face in rock burst mine.

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