分段切顶在缓倾斜中厚矿体房柱法中的应用

Application of sublevel top cutting in room and column method for gently inclined medium thick ore body

缓倾斜中厚矿体的开采常见的采矿方法主要有浅孔留矿法、无底柱分段崩落法及分段房柱法等。采矿方法的选择直接关系到矿山的安全生产,经济效益。因此,合理的采矿方法选择对矿山生产至关重要。本次方案应用在深入分析阳山铁矿东矿段一期工程房柱法开采的基础上,结合地质特征及已有工程现状,对局部中厚矿体(矿体厚度》12M)提出分段切顶回采的方案,可以保证矿山安全生产及提高矿山回采率和经济效益。

Mining method of gently inclined medium thick orebody mining common main short hole shrinkage stoping, sublevel caving method and the sub room and pillar method etc. The selection of mining methods is directly related to the safety production and economic benefits of mines. Therefore, the selection of reasonable mining methods is very important to mine production. The application of this scheme is based on a thorough analysis of the Yangshan east mine section of a project of mining room and pillar method, combined with the present situation of the geological characteristics and the existing projects, the local thick ore（ore body thickness 12 M ＂） proposed cutting top mining scheme can ensure the mine safety production and the recovery rate is high and the economic benefit of mine.