一、概述通常,急倾斜薄矿体多用浅孔留矿法或普通上向分层充填法开采。当矿岩不稳固时,往往采用支柱充填法或分层崩落法。这些方法的共同缺点是机械化程度低,劳动条件差,采矿成本高。近十多年来,随着无轨采矿、光面爆破、锚杆支护和胶结充填等技术的推广应用,国外急倾斜薄矿体的开采技术也有较大进展,主要表现在: ——在无轨采矿的基础上,创造了新的组合式采矿方法:无底柱分段空场法和分段充填法。这两种采矿方法的优点是,采准切割和回采工艺简单,作业安全,劳动生产率高,在围岩稳固和矿体比较规则的条件下, I. Overview Generally, steeply inclined thin ore bodies are often mined by shallow holes or ordinary stratified filling. When the ore rock is not stable, it is often used prop filling method or caving method. Common shortcomings of these approaches are low mechanization, poor working conditions and high mining costs. In the recent ten years, with the popularization and application of such technologies as trackless mining, smooth blasting, bolt support and cementation filling, the mining technology of the steeply dipping thin ore bodies in foreign countries has also made great progress. The main features are as follows: On the basis of mining, a new combined mining method has been created: a pillarless staged void method and a segmented filling method. The advantages of these two mining methods are that the quasi-cutting and recovery processes are simple, the operations are safe, and the labor productivity is high. Under the conditions of stable surrounding rock and relatively regular ore bodies,