无底柱分段崩落法在矿岩软破矿体中的应用

Application of Subievel Caving Without Floor Pillar Mining Method in Soft and Fracture Orebody and Host Rock

本文介绍了通过对杨家坝铁矿存在问题的分析,在研究地压活动规律的基础上,研究出了一套用无底柱分段崩落采矿法开采软破矿体的综合新工艺,基本上解决了软破矿体的难采问题,取得了较好的技术经济效果。

According to the analysis of the existing problems in Yangjiaba iron mine and the study on the movement regular of the underground pressure, a new comprehensive technigue to mine the soft and fracture orebody by the sublevel caving without floor pillar mining method are studied,basically solving the difficult mining problem of the soft and fracture orebody, and gaining fairly good technical and economic effect.