有底柱阶段崩落法的两步骤放矿研究

Two step Drawing Research on Block Caving with Floor Pillar System

通过对有底柱阶段崩落法５种放矿方案的分析研究，提出能改善现场放矿指标的两步骤放矿的放矿方案。该方案工艺简单，操作性强，管理方便，已在弓长岭井下铁矿的生产实践中得到应用，取得较好的效果。

According to the analysis and research of five drawing schemes for block caving with floor pillar system,the two step drawing schemes used for improving drawing index are put forward.This scheme is characterized by the simply in technology,and having fine operating and managing performance.At present,this method has been used in Gongchangling Underground Iron Mine,and the fine effect is obtained.