深部高应力不规则煤柱区大巷冲击地压发生机理及防控技术  

Deep High Stress Area Irregular Pillar Alleys Impact Ground Pressure Induced Mechanism and Prevention and Control Technology

作　　者：解文豪 Xie Wenhao(School of Mining Engineering,University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学矿业工程学院,安徽淮南232001

出　　处：《科学技术创新》2022年第22期119-122,共4页Scientific and Technological Innovation

摘　　要：针对深部高应力煤柱区大巷冲击地压发生机理及防控难题,采用理论分析、现场监测、工程实践等方法对高应力煤柱内大巷冲击地压机理进行了研究。结果表明,一盘区回采后煤柱呈“F”空间结构,随着煤柱另一侧二盘区回采,煤柱空间结构“T”空间结构发展,煤体应力呈“双峰形”分布,煤柱为“高应力不规则煤柱”,煤柱区垂直应力峰值随工作面采空持续升高且逐渐向采区深部转移,导致高应力煤柱深部大巷静载荷增加,具备了冲击地压发生的高静载条件,进一步诱发冲击地压。制定了大巷卸压防冲方案,降低了深部高应力煤柱应力和能量集中水平,减少了深部高应力煤柱内大巷冲击地压的发生。In view of the occurrence mechanism and prevention and control problems of roadway burst in deep high stress coal pillar area,the mechanism of roadway burst in high stress coal pillar is studied by means of theoretical analysis,field monitoring and engineering practice.Results show that after a panel of coal pillar is“F”space structure,with the other side of the second panel mining coal pillar,the pillar space structure of“T”development,space structure stress distribution is“bimodal”form of coal,coal pillar for“high stress irregular pillar”,vertical stress peak value along with the working face goaf area coal pillar continue to rise,and gradually shift to deep mining area,As a result,the static load of deep roadway with high stress coal pillar increases,and the high static load condition for rock burst occurs,which further induces rock burst.The roadway pressure relief and anti-impact scheme is formulated,which reduces the stress and energy concentration level of deep high-stress coal pillar,and reduces the occurrence of rock burst in deep high-stress coal pillar.

关 键 词：不规则煤柱 覆岩空间结构 冲击地压机理 防冲措施 

分 类 号：TD324[矿业工程—矿井建设]