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无底柱分段空场采矿法是国外近几年来大力发展无轨自行设备所出现的一种新采矿方法,它兼有分段空场法和无底柱分段崩落法的优点,在围岩稳定的薄或中厚的急倾斜矿床,往往用来代替一般的分段空场采矿法或留矿法。其特点是:采切和回采工艺简单、作业安全、劳动生产率高、矿石损失和贫化较低。下面介绍这一方法在某些矿山的应用实例。(一)澳大利亚《克利夫兰德》锡矿1.概况矿床赋存在燧石与页岩构成的岩系中,由许多梯队形排列的扁豆状硫化矿脉所组成。矿
A pillarless mining method is a new mining method developed by foreign countries in recent years to develop trackless self-propelled equipment. It combines the advantages of the sub-field method and the subsea caving method, Steady, thin or medium-steeply dipping deposits are often used instead of the general sub-level mining or mining method. Its characteristics are: cutting and mining process is simple, safe operation, high labor productivity, low ore loss and depletion. The following describes the application of this method in some mines. (A) of Australia’s “Cleveland” Tin 1. Overview deposit hosted in chert and chert rock formations, by many echelon-shaped arrangement of lentil sulfide veins. mine