原料综合利用时的采矿工艺特点

• 作 者: 胡爱华 子彦
• 出 处: 世界采矿快报
• 发表日期: 1992年31期
• 关键词: 岩石特性 结晶片岩 石英岩 接触带 克里沃罗格 采矿工艺 采矿作业 利用时 急倾斜 台阶高度

克里沃罗格矿区各采选公司露天矿许多剥离岩石都是能生产建筑材料(如碎石、砂、陶瓷、砖、镁石水泥、石灰等)的有用原料。硬岩主要是以急倾斜层状矿体形式出现的结晶片岩、石英岩、混合岩。在混合开采时,这些岩石在矿体接触带发生混合,因而降低了用户要求的岩石特性。为此,就根据矿体倾角、台阶高度和采矿作业推进方向确定岩石混合带宽度的有关问题进行了研究(图1)。

Mining companies in the Krivoy Rug Open Pit Many pealed rocks are useful materials for the production of building materials such as gravel, sand, ceramics, bricks, magnesia cement, lime, and the like. Hard rock is mainly in the form of steep layered ore-bearing crystalline schist, quartzite, mixed rock. During mixed mining, these rocks mix at the contact zone of the ore body, thereby reducing the rock properties required by the user. To this end, the authors studied the problem of determining the width of the rock mixing zone based on the dip of the ore body, the height of the step and the direction of the mining operation (Figure 1).