一、概述留矿采矿法与其它方法不同的地方,在于进行留矿法时,有颇大一部分采出的矿石在一个相当长的时期内留存在采矿场上——留仓内(见第一图)在每次矿石崩落以后,按时放出一部分矿石,使采下的矿石面与掌子顶板之间的空间适于采矿工作的进行。留矿采矿法是一种具有高度效率的采矿法。关于留矿法的能否采用问题应该给予莫大的注意。采用 I. OVERVIEW The difference between the ore-retaining mining method and other methods lies in the fact that a considerable part of the ore recovered during the retention method remains in the mining field for a considerable period of time - Fig.) After each run-off, some of the ore is released on time so that the space between the mining face and the roof of the palm is suitable for the mining work. Mineral mining is a highly efficient mining method. The question of whether or not to apply the law should be given great attention. use