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为了生产接替与充分利用石膏资源,应城石膏矿进行了G_z-8膏组上行开采试验研究。1984年7月开始试采,1985年8月试采结束。试采区回采面积16146米~2,采出矿量27449吨,试采过程中没有发生安全事故。试采实践证明,G_z-8膏组的上行开采是可行的。一、采场条件与测试仪器布置试采区位于G_z-7膏组东三下山与东四下山之间的采空区上方。距已开采的G_z-7膏细下分层顶极为11.5米左右。G_z-7膏组采场在11年前已采完,其岩层早已稳定(图1)。采区面积为210×80米~2,矿体呈层状,倾角6°30′,纤维膏与泥膏的组合厚度分别
In order to produce and take full advantage of the gypsum resources, the gypsum mine should be gypsum G_z-8 experimental study. Trial production began in July 1984 and ended in August 1985. Test area mining area of 16,146 m ~ 2, mining output of 27,449 tons, the trial mining process did not occur safety incidents. Trial mining practice proved that, G_z-8 paste group of the upstream mining is feasible. First, the stope conditions and test equipment layout Test mining area is located G_z-7 cream group East Third, the downhill and the East down between the goaf above. G_z-7 has been mined from the top of the sub-layered fine pole of about 11.5 meters. G_z-7 paste group stope was collected 11 years ago, its rock formation has long been stable (Figure 1). The area of mining area is 210 × 80m ~ 2, the orebody is layered and the dip angle is 6 ° 30 ’, the thickness of the combination of fiber paste and mud paste respectively