再谈满井放矿

Rediscussion on the Pass Drawing of Mine Shaft Filled with Ore

溜井放矿有很多优点,但也存在一些大的隐患,影响它的应用。井筒装满矿降低井壁剪应力,消除冲撞和滚撞对井壁的磨损破坏。井筒装满矿产生的摩擦磨损,消除卸矿的矿石对井筒中矿石的冲撞,井筒中矿石的黏结力基本保持稳定,减少井筒结拱堵塞的概率。满井放矿是消除隐患的重要措施。

There are many advantages in pass drawing,but there are also some hidden dangers which affect its application.When the shaft is filled with ore,the shear stress of the shaft wall can be reduced,and the wear damage caused by collision and rolling on the shaft wall can be eliminated.The friction and wear caused by the shaft filling with ore can eliminate the impact of the unloading ore on the ore in shaft,and the cohesion of the ore in shaft is basically stable,reducing the probability of blockage due to arch forming in the shaft.Pass drawing when the mine shaft is full is an important measure to eliminate hidden danger.