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以黄山铜镍矿30#急倾斜厚大矿体(530m以上)为研究对象,对研究范围内的含矿岩石物理力学性质、矿体结构面以及原岩应力进行了实验、调查和测量。在此基础上,采用BCF块度预测分析系统对矿体的自然崩落块度及其分布规律进行了预测和分析,结果表明,崩落块度的平均体积为0.49m3,体积小于2m3的块体所占比例为52.17%,块度大小为3m3的块体体积占总体积的比例最大,体积为0.19m3的块体数量最多。预测结果为矿山自然崩落法的设计和开采实践提供了依据。
Taking the 30 # steep-lean thick orebody (above 530m) in Huangshan copper-nickel mine as the research object, the physical and mechanical properties, the ore body structural plane and the original rock stress of the ore-bearing rock in the study area were investigated, measured and measured. On this basis, the prediction and analysis of the natural collapse and its distribution of ore body are carried out by using the BCF block prediction and analysis system. The results show that the average volume of the collapse block is 0.49m3, and the volume less than 2m3 Accounting for 52.17% of the total, the block size of 3m3 the largest proportion of the total volume of the total volume, the volume of 0.19m3 the largest number of blocks. The prediction results provide the basis for the design and mining practice of the natural caving method.