露天转地采复合型人工境界矿柱结构设计  

Structural Design of Compound Artificial Boundary Pillar During Transition from Open-pit to Underground Mining

作　　者：孙琳琳[1,2] 尤春安[1,2] 刘建新[3] 孙凌志[1,2] 

机构地区：[1]山东省土木工程防灾减灾重点实验室 [2]山东科技大学土木建筑学院 [3]山东科技大学信息科学与工程学院

出　　处：《金属矿山》2013年第5期5-9,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:51274131)

摘　　要：以山东黄金集团归来庄金矿项目为依托,采用理论分析和工程实例相结合的研究方法,提供了一种有效的人工假顶和混凝土充填体复合型人工境界矿柱的构建与回采方案,内容包括人工境界矿柱范围、人工境界矿柱结构、人工境界矿柱的形成、充填单元间钢筋的连接、充填单元间的混凝土界面处理、狭窄矿体区域人工境界矿柱结构、人工境界矿柱底部隔离层。沟槽角砾岩坡面采用金属网临时支护,金属网采用管缝式锚杆及钢筋带固定。对复合结构人工境界矿柱带来的经济效益和人工境界矿柱下矿体回收的经济效益进行分析,分析结果表明:复合型人工境界矿柱有效地解决了归来庄金矿露天转地下开采产量持续问题,提高了资源回收率,并达到了安全高效回采的目标,为归来庄金矿带来了重大经济效益。Based on the project of Guilaizhuang Gold Mine in Shandong Gold Group, and combining with theoretical a- nalysis and engineering project, an effective construction and mining program of compound artificial boundary pillar with artificial false roof and concrete filling body is proposed, including scope of artificial boundary pillar, structure of artificial boundary pillar, formation of artificial boundary pillar, rebar connection of filling unit, concrete interface treating of filling unit, structure of artificial boundary pillar in narrow ore body area and bottom isolated layer of artificial boundary pillar. Groove breccia slope surface uses metal nets as temporary support, and metal nets are fastened with tubular bolts and rebar belts. Economic benefits from compound artificial boundary pillar and the ore body below compound artificial boundary pil- lar are studied. The researches show that the compound artificial boundary pillar effectively solves the problem of output stability during transition from open-pit to underground mining in Guilaizhuang gold mine, increases recovery rate of resource and reaches targets of safe and efficient mining, which produces significant economic benefits for Guilaizhuang gold mine.

关 键 词：露天转地采 复合型人工境界矿柱 结构设计 经济效益 

分 类 号：TD861.1[矿业工程—金属矿开采]