霍宝干河煤矿采煤工作面矿压规律分析

Analysis of Mining Pressure Regularity at Mining Face in Ganhe Coal Mine Co.,Ltd.

为掌握霍宝干河煤矿2-126采煤工作面矿压显现规律,现场对该工作面液压支架荷载、煤层顶底板移近量、巷道顶板压力、顶板离层以及锚杆受力等进行监测,结果表明:工作面初次来压步距36~43 m,周期来压步距为15~24 m。工作面来压期间支架最大载荷为6635.68 kN,且两巷压力及变形均在控制范围内,说明选用的支架工作阻力能够很好地满足顶板条件。

To obtain the strata behaviors regularity at 2-126 mining face of HuoBao Ganhe Coal Mine Co.,Ltd.,the author introduces the monitoring of the hydraulic support load,the approaching distance between roof and floor,the roof pressure,the roof abscission layer and the anchor rod stress at mining face roadway roof pressure load quantity of coal seam roof and floor nearer the roof abscission layer,whose results show that the first pressure step distance is from 36~43 m,periodic weighting from 15~24 m with maximum support load of 6635.68 kN;and the stress and deformation of two lanes within control illustrates the selected support working resistance can well satisfy the roof conditions.