大采深综采工作面支承压力分布规律研究

Study on Distribution Law of Abutment Pressure of Fully-mechanized Working Face in Deep Mine

以淮南矿业集团潘三矿西区1622综采工作面为例,采用理论分析和数值模拟的方法对深井综采工作面支承压力的分布规律进行研究。结果表明,支承压力随着工作面推进距离的增加逐渐增大,当推进距离达到一定数值后,增加的趋势趋于平缓;而且随着支承压力峰值点到煤壁距离的增加,峰值点向煤岩体的深部转移,支承压力的影响范围逐渐扩大。最后对工作面前方的支承压力进行观测,观测结果与理论分析和数值模拟的结果比较吻合。

Take Pansan West 1622 working face in Huainan Mining Group for example. The theoretical analysis and numerical modeling were carried out to study the distribution law of abutment pressure of fully-mechanized working face in deep mine. Analysis results dem- onstrate that abutment pressure is gradually increasing with the increase of working face advancing distance, when the advancing dis- tance reaches a certain value,the trend of ascending trends to flat. With the increasing of the distance between the abutment pressure peaks to the coal wall,the abutment pressure peaks moving into the deeper part of the coal,the influencing sphere of abutment pressure gradually expand. Finally, the abutment pressure in front of the working face were observed ,the result of observing agree well the theo- retical analysis and numerical simulation results.