复杂条件下矿柱回采的相似材料模型试验  

Experimental Research on Similarity Model for Ore-Pillar Recovery Under Complex Conditions

作　　者：王贻明[1] 吴爱祥[1] 张传信[2] 滕炳娟 

机构地区：[1]中南大学 [2]中钢集团马鞍山矿山研究院 [3]三山岛金矿

出　　处：《金属矿山》2006年第12期10-12,32,共4页Metal Mine

基　　金：国家杰出青年基金资助项目(编号:50325145)。

摘　　要：在空区未充填的情况下回采矿柱,矿柱与采空区顶板的稳定性是一个关键问题。利用相似理论,建立矿柱回采的平面应力相似材料模型,通过观测模拟矿柱开挖过程的应力与变形变化情况,研究了狮子山铜矿西山特大空区下矿柱回采过程的应力变形的变化规律,结果表明,采用分步回采预留永久矿柱的回采方案是可行的,矿柱回采过程中永久矿柱和采空区顶板是稳定的。矿柱回采的实践证明了相似材料模型试验结果是正确的。The stability of the ore pillar and the roof is a key issue in the pillar recovery in unfilled mined - out area. A plane stress similarity model for pillar recovery was established based on similarity theory. The change law of the stress and deformation in the pillar extraction process in the ultra-large mined-out area in Shizishan Copper Mine was studied by observation and simulation. The results showed that the pillar recovery scheme including staged extraction and permanent pillar preservation wouht be feasible and the permanent pillar and the roof of the mined - out area would be stable in the pillar recovery process. The pillar extraction practice has proved the correctness of the test results of similarity model.

关 键 词：矿柱回采 相似材料 模型试验 复杂条件 

分 类 号：TD350.1[矿业工程—矿井建设]