复杂地质条件下矿体开采顺序的数值分析

摘要

Aiming at ore extraction under complex geological conditions, considering the character of a illustrated mine, mining sequences of different levels vertically and horizontally (5 solutions in total) were analyzed by adopting numerical simulation. The best extraction solution by comparing indicators of ground stress distribution, moving rules of surrounding rocks and water pressure aggregation at void spaces were gained. The result shows that for the 113 ore body of the mine, a top-down raining sequence shall be adopted for mining levels, and the ore extraction in a level shall start from the centre and expand toward two ends.%针对复杂地质条件下的矿体开采工作,根据某矿山实际特点,采用数值模拟技术分别分析了不同中段(垂直方向)和同一中段(水平方向)矿体的回采顺序(共5个方案),并综合比较了应力场分布、围岩移动规律和孔隙水压力聚集等指标,得到了最优回采方案.结果表明,对于该矿Ⅱ3矿体,不同中段的回采顺序宜采取从上往下方式,而同一中段回采时,应采用中央向两端的顺序.