论文部分内容阅读
长壁拉底空场法是在下盘矿体内沿走向长壁拉底,再在拉底水平钻凿平行炮孔,回采拉底水平以上的矿体。此法可降低采掘比,缩短基建期限,降低贫化。固柱拉底空场法的基本特点是以圆拉底结构取代底盘漏斗结 构。圆柱规格为1.8×1.(?)～2×3米。其间跨度为6～10米,拉底回采工作斜长为40—50米。宽15—20米。高2～4米。这种方法有利于推广应用各类新型采装运设备。长柱拉底空场法是沿倾向划分矿房和连续长柱,先采矿房,然后在挑顶回采中依次回采连续长柱。矿房及连续长柱的最大走向长度相当于
The long-bottom-floor-emptying method is to pull the bottom of the longwall in the lower orebody and then drill the parallel holes at the bottom of the footwall to extract the orebody above the level of the bottom. This method can reduce the mining ratio, shorten the duration of infrastructure, reduce poverty. The basic characteristics of the solid bottom pull-out method is to replace the structure of the base hopper with a round bottom structure. Cylindrical specifications for 1.8 × 1. (?) ~ 2 × 3 meters. During the span of 6 to 10 meters, pull the bottom of mining work inclined length 40-50 meters. 15-20 meters wide. High 2 to 4 meters. This method is conducive to promoting the use of various types of new mining equipment shipped. The long bottom barometric method is to divide the mining house and the continuous long column along the tendency, the first mining house, and then in the pick top mining successive continuous column. The maximum strike length of the mines and long columns equals