基于岩体质量分级的区域矿体稳定性分析

Stability Analysis of Regional Ore Body based on Rock Mass Quality Classification

通过对三山岛金矿直属矿区的矿岩进行大量岩石力学试验与节理调查,对开采区域进行岩体质量分级。确定Ⅱ级、Ⅲ级、Ⅳ级岩体分别采用点柱法、盘区房柱法、进路法开采,然后采用有限元数值软件对开采区域进行稳定性分析,得出开采后的围岩变化特征,为矿区的安全高效开采提供理论依据。

Through a large number of rock mechanics tests and joint surveys on ore rock in mining area of Sanshandao Gold Mine, rock mass quality classification was done on mining area. Dotted pillar method, panel mining room - and - pillar method, lane type working method was adopted in Ⅱ grade, Ⅲ grade, IVgrade rock mass mining separately, then stability analysis was done on mining area by finite ele-ment numerical software. Surrounding rock variation characteristics after mining were obtained, while it provides theoretical basis for safety and high efficiency mining of mining area.