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针对某矿复杂围岩条件下深部开采存在的损失贫化高、回采安全性差、效率低等问题,提出以菱形矿房多分段组合式中深孔落矿结合全尾砂胶结充填的综合回采方案,以特殊的菱形矿房布置来减少上盘顶板的塌落,采用多分段微差爆破和强采强出来减少顶板的破坏与暴露时间,并且以爆破矿石填满空区来有效控制地压。试验结果证明,该方案可将损失贫化均有效控制在8%以内,矿块生产能力达到200t/d,满足矿山安全生产要求。
Aiming at the problems such as high depletion rate, poor safety in mining and low efficiency in deep mining under the condition of complex surrounding rock in a certain mine, the paper puts forward a scheme of multi-section combined diamond mining combined with full tailing cementing Program to a special diamond-shaped mining layout to reduce the roof hanging plate roof, the use of multi-stage micro-blasting and strong mining out to reduce the roof damage and exposure time, and blasting ore to fill the empty area to effectively control Pressure The test results show that the scheme can effectively control the loss and depletion within 8% and the ore block production capacity to 200t / d, meeting the requirements of mine safety production.