煤炭工程 ›› 2025, Vol. 57 ›› Issue (10): 37-45.doi: 10. 11799/ ce202510005

• 专题论坛 • 上一篇    下一篇

厚硬顶板区域顺层水平钻孔水力压裂布置方法研究

高福全,韩凌晨,高全武,谢非,孙如达   

  1. 1. 中煤西北能源化工集团有限公司,内蒙古 鄂尔多斯 017200

    2. 天地科技股份有限公司 开采设计事业部,北京 100013

    3. 中煤科工开采研究院有限公司,北京 100013

    4. 矿山顶板灾害防控国家矿山安全监察局重点实验室,北京 100013

  • 收稿日期:2025-05-26 修回日期:2025-07-09 出版日期:2025-10-10 发布日期:2025-11-12
  • 通讯作者: 谢非 E-mail:365426188@qq.com

Disaster mechanism and control technology of large roadway group with repeated impact in extra-thick coal seam

  • Received:2025-05-26 Revised:2025-07-09 Online:2025-10-10 Published:2025-11-12

摘要:

针对厚硬顶板开采过程中破断易引发动力灾害的问题,以门克庆煤矿11-3107工作面为工程背景,综合运用理论分析、数值模拟与现场实践等研究手段, 深入探究厚硬顶板区域压裂顺层水平钻孔的布置方法。首先,通过顶板岩性分析、关键层判别、能量传递研究及微震监测等多维度手段,明确该工作面上覆岩层存在关键层Ⅰ、Ⅱ、Ⅲ, 其破断向煤体传递的能量较高,综合判定煤层上方15~30m(中低位)、45~60m(中高位)为优选压裂层位,且回采阶段需根据岩层柱状图变化动态调整。其次,结合数值模拟与现场注水漏失量分析,明确不同采动破坏范围内的岩层特性,确定水平方向钻孔布置参数,同时完成顶板爆破预裂影响范围评估。基于上述研究,针对性提出3107工作面区域压裂方案,为该工作面后续安全高效开采提供可靠的技术支撑。

关键词: 冲击地压 , 水力压裂 , 顺层钻孔 , 钻孔布置 , 关键层

Abstract:

Aiming at the problem of dynamic disaster caused by the fracture of thick and hard roof in the mining process, taking the 11-3107 working face of Menkeqing Coal Mine as the engineering background, the layout method of fracturing horizontal drilling in thick and hard roof area is deeply explored by means of theoretical analysis, numerical simulation and field practice. Firstly, through the multi-dimensional analysis of roof lithology analysis, key layer discrimination, energy transfer research and microseismic monitoring, it is determined that there are key layers I, II and III in the overlying strata of 3107 working face, and their breaking has high energy transfer to coal body. It is comprehensively determined that the middle and low positions of 15-30 m and the middle and high positions of 45-60 m are fracturing horizons and need dynamic adjustment. Secondly, the numerical simulation is used to analyze the water injection leakage in different mining failure ranges, and the horizontal borehole layout parameters are determined, and the pre-splitting effect of roof blasting is evaluated. Based on the above research, the regional fracturing scheme of 3107 working face is put forward, which provides a solid technical support for the subsequent safe and efficient mining of 3107 working face in Menkeqing Coal Mine.

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