沙井子矿区首采综放工作面矿压显现规律

Behavior Regularity of Mine Pressure at Fully Mechanized Caving Coal Face in Shajingzi Mining Area

采用现场实测和理论分析的方法,对51511工作面正常推进和末采期间的顶板来压规律进行了研究。结果表明:工作面平均周期来压步距15.7 m,平均来压动载系数1.30,工作面周期来压存在大、小周期。直接顶厚且强度低,老顶薄且上方无坚硬顶板存在,此结构可避免工作面发生大规模压架动载现象。

Using regularity of result shows the methods of field measurement and theoretical analysis,studys the behavior pressure at 51511 working face during the normal and terminal mining period. The the average period to press increments of 15.7 re,average dynamic load factor 1.30,face cycle pressure exists sizes cycle. Immediate roof is thick and low intensity, main roof is thin and exist no hard roof above, this structure can prevent mass pressure frame face generate dynamic load occurs.