【摘要】 针对王庄煤矿3043大采高综采面来压期间煤壁片帮严重的问题,采用现场实测、理论分析研究了该采煤面矿压显现特征与煤壁片帮情况。掌握了采煤面初次来压步距为32.5 m,周期来压步距为17.8 m,动载系数为1.77。分析数据结果表明,煤壁片帮现象与矿压规律相吻合,采煤面中后部片帮更为严重。更多还原

【Abstract】 Aiming at the serious problem of coal wall spalling during the pressure period at 3043 fully mechanized face with big mining height of Wangzhuang coal mine, using field measurement, theoretical analysis, the coal surface mine pressure behavior and coal wall has been mastered that coal face first weighting step distance of 32.5 m, periodic weighting step distance of 17.8 m, dynamic load factor 1.77.Data analysis results show that the phenomenon of coal wall spalling spalling and mine pressure regulation coincide,in the back of the face,the spalling is more serious.更多还原