赵各庄矿深部大倾角综放工作面矿压显现规律研究

基于赵各庄矿3237综放工作面矿压观测结果,重点研究了深部大倾角综放工作面的矿压显现规律和上覆围岩运移规律。研究结果表明:工作面初次来压步距为16～18 m,增载系数为1.47～2.33;周期来压步距为11～13 m,增载系数为1.15～1.36,属于来压不明显工作面;支架前柱工作阻力普遍大于后柱,约为2倍的关系;顶煤和顶板的始动位置超前于煤壁,煤壁前方的顶煤与顶板均出现不同程度的水平和垂直位移量。

Study on mine pressure behave laws of deep tilting fully mechanized caving face in Zhaogezhuang Mine

Based on the observation results of mine pressure of fully mechanized caving face 3237 in Zhaogezhuang Mine,the mine pressure behave laws of deep tilting fully mechanized caving face and regularity of overlying rock shift were discussed.The results indicated that： ① the workface weighting was not obvious because the work first weighting step distance was 16 ～ 18m with the increasing load modulus 1.47 ～ 2.33,and the periodic weighting length of workface was 11 ～ 13m with the increasing load modulus 1.15 ～ 1.36;② working resistance of anterior column support was about twice as much the posterior column generally;③ the movement of roof coal and immediate roof and main roof is in front of the coal wall,and different degree movement in horizontal and vertical direction have happened in the roof coal and roof in front of the coal wall.