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下向分层充填法,采用这种采矿法开采时,矿床分为宽40m 和长60m 的矿块。矿块高取为矿床厚度。上部、下部盘区平巷用联络道和天井联通。在分层中央和矿块两翼掘进切割巷道而开始回采。从侧翼分层巷道以尽头进路向中央分层巷道推进而回收矿石。第一步骤进路回采时,在进路间留下相同宽
Under the stratified filling method, mining using this mining method, the deposit is divided into 40m wide and 60m long ore block. The lumps are taken as the thickness of the deposit. Upper and lower panel lanes with contact Road and Patio Unicom. In the middle of the stratification and nuggets two tunneling cutting roadway and began mining. From the flanking stratified lane to the end of the road to the central stratification lane to recover the ore. The first step back into the road, leaving the same width between the way