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本文对矿山压力的系数和压力值进行了研究,并找出了矿山压力的变化规律。可以把充有崩落矿石的矿块ACED(图1)看作为一个大尺寸的放矿口,随着矿块中矿石的放出,崩落的岩石就下沉到放矿口中。在矿块上部的崩落岩层中形成一个松动的椭球体。椭球体边界内松散岩石的自重,借助于暂时平衡拱传递到松动椭球体的球壁上。在暂时平衡拱ABC内松散岩石的自重和矿块内矿石的自重就在底部DE面上引起压力。支撑于矿块宽度上的抛物线拱,我们叫做计算压力拱。压力拱参数的确定由图2得出:
In this paper, the factors of pressure and pressure of mine are researched, and the law of variation of mine pressure is found out. ACED (Fig. 1), which is a piece of ore with crashed ore, can be considered as a large-sized ore discharge mouth. As the ore in the nugget is released, the rock that has fallen off sinks into the discharge opening. A loose ellipsoid is formed in the caving rock in the upper part of the block. The weight of loose rock in the ellipsoid boundary is transmitted to the ball wall of the loose ellipsoid by means of a temporary balance arch. In the temporary balance arch ABC loose rock weight and ore weight within the ore on the bottom of the DE surface pressure. Parabolic arch supported on the width of the block, we call it the Compression Arch. Determination of pressure arch parameters from Figure 2: