【摘要】 本文用随机介质理论研究大量崩矿中的重力放矿规律问题。文中指出放矿场的移动区域周界是一非线性闭合曲线绕其对称轴旋转而成的闭曲面,表明该非线性闭合曲线在一般情况下不是椭圆,在一定条件下它近似瘦长的椭圆。并证明该曲线方程为 由此导出了放矿松动体(高H)的体积V_o、放出体(高h_d)的体积V_d分别为: 从而应用上述结果解释了重力放矿中的一些有关因素,对传统的经验“放矿椭圆”说提出了改进。更多还原

【Abstract】 The stochastic medium theory is used to study the ore-draw under gravity flow in bulk mining. It is noted that the boundary line of displacement in ore-draw field is a closed curved surface made by a nonlinear closed curve rotating on its axis of symmetry. It is shown that in general this non-linear closed curve is not elliptic but is approxi- mating a slender ellipse only in specified conditiotis. The equatin of that closed curve is as follows:From this, the volume V0 of the loose ore-draw column with a height H and the volume Vd of out-draw ore with a height hd may be caleul-aled as follows:The above results are used to explain some correlative factors in ore. d r awing u n d e r gravity f 1 o w .This has provided some improvement to the traditionally empirical "ellipsoid theory" of ore draw in bulk mining.更多还原