浅埋煤层长壁开采支架阻力及安全界限  

Working Resistance and Safety Margin of Long-wall Support in Shallow Coal Bed

作　　者：纪志云 

机构地区：[1]七台河矿业精煤集团公司铁东煤矿,黑龙江七台河154600

出　　处：《煤炭技术》2006年第10期56-57,共2页Coal Technology

摘　　要：依据浅埋煤层矿压显现特征,给出浅埋煤层长壁开采工作面支架合理工作阻力及安全界限的确定方法。工作面支护强度的提高,相当于增加关键层下方工作面处的变形刚度k值,可使基岩层关键层破断距有所减小,顶板的破断位置偏向采空区,顶板台阶下沉范围和下沉值均减小。Base on the weighing feature of the shallow coal bed, the specifying method of the support working resistance and safety margin is presented in the shallow coal bed. The increment of support＇ s working resistance is equal to the deformation rigidity increment bellow key- layer, which can decrease the breakage distance of key- layer, make the position of breakage deflect to the gob, decrease the falling region and the falling magnitude of roof.

关 键 词：浅埋煤层 长壁开采 支架阻力 安全界限 

分 类 号：TD32[矿业工程—矿井建设]