深井上下山煤柱区覆岩结构演化特征及对冲击矿压的影响  

Overlying Strata Structure Evolution Feature and Its Influence on Rock-burst in Uphill and Downhill Protection Coal Pillar Area of Deep Mine

作　　者：李志民 刘振江[2] 

机构地区：[1]甘肃省百贯沟煤业有限公司,甘肃平凉744200 [2]中国矿业大学矿业工程学院,江苏徐州221008

出　　处：《煤矿安全》2015年第6期183-186,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB724206);国家科技支撑计划资助项目(2012BAK09B01);国家自然科学基金资助项目(51104150)

摘　　要：上下山煤柱区是煤矿动力灾害多发区,尤其深井煤层群联合布置的采区生产后期更为显著。通过理论分析、现场微震监测等对深井上下山煤柱区覆岩演化特征及对冲击矿压的影响进行研究。结果表明:上下山煤柱区覆岩依次形成单煤层一侧开采"F"结构、单煤层两侧开采"T"结构及煤层群开采大"T"结构,覆岩活动范围、强度逐渐增强,冲击危险性不断升高;现场微震监测验证了结论的合理性;针对不同的覆岩结构,分别提出针对性的控制措施。研究成果为深井煤岩动力灾害防治提供借鉴和指导。The uphill and downhill protection coal pillar area is the frequently-occurring zone of coal mine dynamic disasters,especially this problem is more significant for the mining area of deep coal seam group jointly arranged in post-production. Through theoretical analysis and microseismic monitoring,We studied the overlying strata structure evolution feature and its influence on rock-burst in uphill and downhill protection coal pillar area. The results indicate that it sequentially forms ＂ F＂ structure of single coal seam mining in one side and ＂ T＂ structure of single seam mining in both sides and large ＂ T＂ structure of coal seam group mining in uphill and downhill coal pillar area,which causes the scope and intensity of overlying strata gradually increases and rock-burst hazard continuously rises. The field microseismic monitoring verifies the reasonableness of conclusions. Targeted control measures are proposed based on different overlying strata structure. The research achievements provide reference and guidance for preventing coal and rock dynamical disasters in deep mine.

关 键 词：深井 上下山煤柱区 覆岩演化 冲击矿压 矿震 

分 类 号：TD324[矿业工程—矿井建设]