论文部分内容阅读
引言 目前,900东部采矿段正用房柱式开采法进行开采,使用的是无轨橡胶轮胎设备。由于该采矿段位于两个岩脉之间,如图Ⅱ-1所示,该区域必须用辅助风扇通风,而且通风导管铺设到9341平巷与800装车台交叉处,这时,将提供一种比较规范的无逆流通风系统。 与900东采矿段相邻的是一个采空区,该采空区正被用作排风走廊。工作区和非工作区借助两个隔墙分开,其一位于9331回采平巷的末端,第二个沿着9341中间平巷,位于9341回采面末端附近。已经测定:这些隔墙限制了氡子体流进工作区。
INTRODUCTION Currently, the eastern mining section of 900 is being explored using post-column mining, using trackless rubber tire equipment. Since the mining section is located between two dike vents, as shown in Figure II-1, the area must be ventilated with an auxiliary fan and the ventilation ducts are to be routed to the intersection of the 9341 lane and the 800 loading dock, in which case a A more standardized non-countercurrent ventilation system. Adjacent to the 900 east mining section is a gob, which is being used as a ventilation corridor. The work area and the non-work area are separated by two partitions, one at the end of the 9331 recovery lane and the second along the 9341 middle lane near the end of the 9341 recovery face. It has been determined that these partitions limit the flow of radon progeny into the work area.