摘要
郭村煤矿对1204工作面顸板活动规律进行了研究.研究表明：1204工作面周期来压规律不明显,工作面前方20m以内的回采巷道受超前支承压力影响,超前支承压力峰值区在工作面前0～8m,工作面初撑力普遍较小,工作面老顶属于Ⅰ级顶板老顶来压不明显,直接顶为Ⅰb类不稳定顶板.
This paper studied the law of roof movement of 1204 working face in Guocun coal mine. Research shows that： the law of periodic weighting of 1204 working face is not obvious, in front of the working face 20m mining roadway influenced by the abutment pressure, abutment pressure peak area of 0-8m in front of the working face, the working face early support force is generally small, working face roof belongs to grade I roof weighting of main roof is not obvious, the immediate roof is the Ib class of unstable roof.
出处
《山东煤炭科技》
2014年第9期33-34,37,共3页
Shandong Coal Science and Technology
关键词
三软
矿压规律
顶底板
周期来压
工程地质
three soft mine pressure law the top and bottom cycle pressure engineering geology
