煤炭科技2025，Vol.46Issue(3)：8-14,20,8.DOI:10.19896/j.cnki.mtkj.2025.03.002
冲击危险区域煤层钻孔卸压效能分析及优化
Analysis and optimization of coal seam drilling pressure relief efficiency in impact hazardous areas
曹远威 1李格林 2戚征兵 2邓亿2
作者信息
- 1. 徐州矿务(集团)新疆天山矿业有限责任公司,新疆 库车 842000||江苏徐矿能源股份有限公司,江苏 徐州 221000||江苏省煤矿冲击地压防治工程技术研究中心,江苏 徐州 221616
- 2. 徐州矿务(集团)新疆天山矿业有限责任公司,新疆 库车 842000||江苏徐矿能源股份有限公司,江苏 徐州 221000
- 折叠
摘要
Abstract
In response to the problems of short pressure relief distance,large deviation of corner drilling trajectory,lagging pressure relief between the two sides,and multiple blind spots in pressure relief in coal body drilling in impact hazardous areas,two coal seam drilling layout methods,namely the excavation face drilling site and the adjacent roadway drilling site,were designed based on the engineering background of pressure relief in the anti-collision area of the No.52109 material roadway excavation working face of Xukuang Group Tianshan Mining Company's Okhobrak Coal Mine.The pressure relief characteristics were analyzed.There were generally pressure relief blind spots in front of the excavation face drilling site,on the two sides,and at the upper and lower corners.The adjacent roadway drill-ing site achieved sufficient pressure relief and eliminated the pressure relief blind spots.Two types of stress relief drilling strategies were designed:one at the roadway cross section and the other from adjacent roadway.The stress relief effect of these strategies was subse-quently analyzed.By establishing two quantitative indicators for pressure relief efficiency analysis,namely pre pressure relief area ratio and the pressure relief index in single excavation,the pre relief area rate of the adjacent roadway drilling site increased from 5.63%to 48.00%compared to the excavation face drilling site,and the pressure relief index in single excavation increased by 1.91 m.The opti-mized drilling layout was applied in the No.52109 material roadway,eliminating pressure relief blind spots during excavation,reducing mining vibration frequency and energy,and achieving safe and anti-collision excavation.关键词
卸压效能/掘进面钻场/邻巷钻场/预卸压面积率/单进卸压钻孔指数Key words
pressure relief efficiency/excavation face drilling site/adjacent roadway drilling site/pre pressure relief area ratio/pressure relief index in single excavation分类
矿业与冶金引用本文复制引用
曹远威,李格林,戚征兵,邓亿..冲击危险区域煤层钻孔卸压效能分析及优化[J].煤炭科技,2025,46(3):8-14,20,8.
