坚硬顶板厚煤层分层开采诱冲机理实验研究  

Experimental Research on Mechanism of Inducing Rock Burst in Slice Mining of Thick Coal Seams with Hard Roof

作　　者：李彦伟[1] 张科学[2,3] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国煤炭科工集团北京天地玛珂电液控制系统有限公司,北京100013 [3]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤炭技术》2016年第5期108-110,共3页Coal Technology

基　　金：国家重点基础研究发展规划(973)项目(2010CB226801);国家自然科学基金(51174213);新世纪优秀人才项目(NCET-10-0775);中央高校基本科研业务专项资金资助(2009QM001)

摘　　要：针对坚硬顶板厚煤层下分层综放开采冲击频发的现象,设计了厚煤层分层开采相似模型实验,研究了分层开采条件下上覆岩层的运移规律和底板岩层的应力特征。应力监测表明,顶分层开采时煤岩应力变化较平稳,而下分层开采时应力波动十分剧烈,当载荷超过煤体极限载荷时,就可能会发生冲击地压。Aiming at frequent occurrence of rock burst in fully mechanized sub-level caving in bottom slice of thick coal seams with hard roof, a similar simulation experiment of slice mining in thick coal seams is designed. The law of floor stress evolution and overlying strata motion is studied. The stress monitoring results show that floor stress is relatively stable in mining top slice, while the stress wave is very severe in bottom slice,when the coal tress exceeds the limit load, rock burst will occur in the roadways and coal faces.

关 键 词：坚硬顶板 分层开采 厚煤层 冲击地压 

分 类 号：TD324[矿业工程—矿井建设]