西曲矿综采工作面蹬空开采矿压显现规律实测研究

Study on the Law of Mining Pressure in the Fully Mechanized Mining Face During the Overhead Mining of Xiqu Mine

通过现场实测掌握了西曲矿12317蹬空工作面矿压显现规律。研究结果表明,12317工作面进行蹬空开采时支架平均工作阻力、周期来压步距、动载系数、超前支承压力影响范围、煤壁片帮率等均比非蹬空开采时要小,且超前支承压力峰值位置距离煤壁较远,说明蹬空开采相比于非蹬空开采矿压显现并不剧烈。

The pressure behavior law of 12317 working face in Xiqu Coal Mine is mastered by the feld measurement, and the results show that when the 12317 working face is mined above hollow, the average support working resistance, the periodic weighting step distance, dynamic load coeffcient, abutment pressure infuence scope, coal wall spalling rate was lower than non mining above hollow, and the abutment pressure peak position is far from the coal wall, which shows that the strata pressure is not severe in overhead mining compared to non mining above hollow.