黑龙江科技大学学报2024，Vol.34Issue(4)：502-509,8.DOI:10.3969/j.issn.2095-7262.2024.04.002
近断层石门揭煤围岩控制技术研究
Study on surrounding rock control technology of near-fault cross-cut coal uncovering
摘要
Abstract
This paper is an effort to investigate the evolution law behind the surrounding rock stress of the roadway affected by faults.The study taking the near-fault cross-cut coal uncovering as the research background involves analyzing the deformation and failure of surrounding rock of roadway by numerical simulation method;and proposes the the borehole destressing technique measures in roadway side.The results show that influenced by the fault activation,the stress concentration degree of the side of the cross-cut near the fault is high in the process of uncovering coal,and the vertical stress reaches 44 MPa.The pressure relief borehole scheme is the best with the borehole diameter of 300 mm,borehole length of 5 m and borehole spacing of 600 mm.Based on this scheme,the stress in original stress peak area is re-duced from 44 MPa to 28.64 MPa,and the stress release rate can reach 35%,suggesting that the control effect of roadway surrounding rock is remarkable.This study provides a new idea of the control of roadway surrounding rock under fault structure,which can effectively prevent and control the rock burst disaster caused by fault dislocation in coal mine.关键词
断层/钻孔卸压/冲击地压Key words
fault/borehole destressing/rock burst分类
矿业与冶金引用本文复制引用
肖福坤,吴攀,刘刚,单磊..近断层石门揭煤围岩控制技术研究[J].黑龙江科技大学学报,2024,34(4):502-509,8.基金项目
黑龙江省自然科学基金项目(ZD2021E006) （ZD2021E006）
