通过对长平矿4303工作面矿压实测结果的分析,系统研究了大采高工作面的矿压显现规律。研究结果表明:周期来压期间动载系数为1.04~2.01,平均1.35;工作面支架平均工作阻力主要分布在4000~9000 kN,支架增阻效果良好,支架完全能够满足顶板支护的要求;提高支架初撑力,有助于提高顶板稳定性。
Based on the actual measurement results of rock pressure in 4303 working face in Changping Mine, systematical study was carried out on the rock pressure regularity in the working face with large mining height. The research results showed that the dynamic load coefficient during the periodic weighting of the working face was 1. 04 ~ 2. 01, an average of 1. 35;the average yield load of the powered supports was mainly distributed in 4 000 ~ 9 000 kN, the support had good yield load and can completely meet the requirements of roof support; increasing the setting load of the powered support was helpful for the improvement of roof stability.