薄煤层泵送矸石充填开采矿压显现规律研究  

Research on Strata Behavior in the Process of Gangue Backfill by Filling Pump in Thin Coal Seam

作　　者：林惠立[1,2] 李洪[3] 刘庆龙 

机构地区：[1]山东科技大学资源与环境工程学院,青岛266510 [2]煤炭科学研究总院,北京100013 [3]山东科技大学资源与土木工程系,泰安271019 [4]中国煤炭科工集团重庆研究院,重庆400037

出　　处：《煤矿现代化》2012年第4期62-64,共3页Coal Mine Modernization

摘　　要：为有力地配合北宿煤矿薄煤层泵送矸石充填开采工业性试验,更好的为今后薄煤层充填开采提供可靠依据,在C1661充填开采工作面进行了矿压观测,C1661充填开采工作面与1863采用全部垮落法开采工作面相比,顶底板移近量增大11.4%,单体支柱末阻力增大54.8%,液压切顶支架末阻力增加8.8%,支架活柱缩量增大5.7%,支护强度基本相等,来压强度减小28%,周期来压步距增大27.3%,初次来压步距增大12%。In order to coordinate with industrial test of gangue backfill by filling pump in thin coal seam in Beisu Coal Mine, and provide a more reliable basis for fill mining in thin coal seam in the future, strata control observation was conducted in C1661 working face. And com- pared with 1863 face which was mined by caving method, convergence between roof and floor increased by 11.4%, terminal resistance of sin- gle prop increased by 54.8%, terminal resistance of hydraulic support increased by 8.8%, expansion amount of hydraulic support increased by 5.7%, ground pressure strength decreased by 5.7%, periodic weighting length increased by 27.3%, first weighting interval increased by 12%, and the strength of support was basically the same.

关 键 词：薄煤层 矸石充填开采 矿压显现规律 

分 类 号：TD323[矿业工程—矿井建设]