贺西矿回采工作面矿压规律研究.doc


贺西矿回采工作面矿压规律研究
王永文1,2*
(1. 中国矿业大学矿业工程学院,江苏徐州 221116;
5
10
15
20
25
2. 山西焦煤集团,太原 030024)
摘要:回采工作面矿压规律的研究是回采工作面回采的一个重要环节,通过采用 YHY60(B)
矿用本安型数字压力计对贺西煤矿 2404 工作面内支架工作阻力的观测及支护状况的统计观
测,研究工作面支架载荷大小,初次来压支架平均载荷 3367KN,周期来压支架平均载荷
,验证了工作面所选掩护式支架完全可以满足顶板支护强度的需要;研究周期来压
规律,确定直接顶初次垮落步距为 ~,平均 13m;基本顶初次来压步距为 25m,
周期来压步距为 13~20m,平均为 ,为贺西矿其他相似地质条件工作面提供借鉴。
关键词:周期来压;支架工作阻力;矿压观测
中图分类号:TD353
Study on the Mine Pressure Regularity of the Working Face
in Hexi Coal Mine
WANG Yongwen1,2
(1. School of Mines, China University of Mining & Technology, JiangSu XuZhou 221116;
2. Shanxi Coking Coal Group, TaiYuan 030024)
Abstract: The mineral pressure regularity of working face is an important part of working face
mining, the working resistance of support and the condition of supporting in working face 2404
are observed by using the YHY60(B) intrinsically safe digital manometers, the average support
load is 3367kN when first weighting, the average support load is when periodic
weighting, so the selected shield support can meet the needs of the strength of roof support; the
periodic pressure regularity is studied, the initial caving interval of the immediate roof is
~, the average is 13m; the first weighting interval of the basic roof is 25m, the periodic
weighting interval is 13~20m, the average is , it provides reference for the simil