【摘要】 结合崩落矿岩散体的力学特性,利用随机介质放矿理论,介绍了矿岩散体流动参数测定的物理模拟实验,测定了不受边界约束和端部放矿两种方式下的散体流动参数·研究了矿岩散体的流动形态(放出体形态)·认为采用低贫损开采模式,可有效地降低矿石损失贫化·工业试验表明,对于采用无底柱崩落法的矿山,利用模型实验,测定现场矿岩散体流动形态(参数),优化采场结构参数,可有效地降低矿石损失与贫化,提高矿山整体经济效益·更多还原

【Abstract】 According to the mechanical characters of mineral,stochastic theory was used to set up a physical model about mineral moving. The mineral moving parameters without any boundary condition restrict and with the side port moving were measured. The shape of blasted orerock moving(drawn body) was researched. The results show that it is better to optimize the shape of orerock mass according to the structure parameter of the stope. The physical simulation can effectively reduce the ore dissipation and the ore dilution. The structure parameters of the stope disagreeing with the rule of broken orerock movement are the main factors of ore lose. Based on the simulation result inspot,a new caving method without bottom pillar was used. It is shown that the ore lose was reduced effectively,the mineral resource had been recovered and economic overall return was encouraging and satisfactory.更多还原