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近年来,我矿推广采用了水平分层充填法,由于回采切割的工程量大,效率低,往往因此而拖延了采矿工期。我们总结了过去的经验教训,借鉴了国内、国外一些矿山的先进技术,采用了一种高效率大面积切割的新方案,使矿量变级时间比用一般切割方法缩短了2/3。 (一) 矿块回采的技术条件矿体延走向长160米,平均厚度10米,倾角为60～70°,矿体及围岩均比较稳固(矿石f=8～10,岩石f=10～12)。用水平分层尾砂胶结充填采矿法回采矿石,矿块长同矿体的长度为160
In recent years, I promote the use of the level of stratification filling method, due to the large amount of mining cutting, low efficiency, often resulting in delays in the mining period. We summarize the past experiences and lessons learned from the advanced technologies of some mines at home and abroad and adopt a new scheme with high efficiency and large area cutting, which shortens the time of classifying the ore amount by two-thirds compared with the general cutting method. (I) Technical Specifications of Ore Mining The ore bodies are extended to a length of 160 meters, with an average thickness of 10 meters and a dip angle of 60-70 degrees. The ore body and surrounding rock are relatively stable (ore f = 8-10 and rock f = 12). With horizontal layered tailings cemented filling mining method mining ore, ore blocks with the length of ore body 160