“两硬”薄煤层综采工作面矿压规律实测研究

Field Measurement Study on Strata Behavior Law in "Two Hard" Thin Coal Seam at Fully Mechanized Coal Face

以姜家湾矿78119"两硬"薄煤层综采工作面为研究对象,通过现场实测掌握了该工作面顶板来压步距、来压强度、支架载荷分布特征等矿压显现特点,并通过宏观观测掌握了支架活柱下缩量和煤壁片帮情况,为"两硬"薄煤层综采工作面开采提供了实测依据。

Taking 78119 ＂two hard＂ thin coal seam fully mechanized mining working face of Jiangjiawan Colliery as researchobject, characteristics of strata behavior such pressure step, pressure strength and support load distribution of face have beenmastered by field measurement. Support column shrinkage and rib spalling have also been mastered by macroscopic observation,which provided experimental basis for the mining of ＂two hard＂ thin coal seam fully mechanized mining working face.