综采工作面大角度旋转回收煤柱技术实践

Practice of Large Angle Rotating Recovery Coal Column in Fully Mechanized Working Face

以松峪煤业2103工作面为背景,在该工作面回采结束后,采用磨三角的方式,以工作面溜子机头为圆心进行磨机尾分段旋转开采,回收工作面保护煤柱。经现场试验,工作面旋转开采期间,端头和顺槽顶板安全稳定,降低了矿井生产成本。

Taking the 2103 working face of Songyu Coal Industry as the background,after the mining of the working face,the grinding triangle method is adopted,the head of the working face's slide is taken as the center to carry out the grinding tail section rotary mining,and the working face's protective coal pillar is recovered.Through the field test,during the rotary mining of the working face,the end and the trough roof are safe and stable,and the production cost of the mine is reduced.