山东黄金归来庄金矿露天采场深凹边坡局部破坏的治理  

Local Failure Treatment of Deep Open-pit Rock Slope in Guilaizhuang Mine of Shandong Gold Group Co.,Ltd.

作　　者：尤春安[1] 杜文[1] 

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590

出　　处：《有色金属工程》2015年第3期91-95,共5页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51274131)

摘　　要：介绍山东黄金归来庄矿业有限公司露天采场矿坑东帮1号矿体滑坡治理情况。结合露天采场地质条件用传统的地质结构面分析方法分析滑坡原因,引入开挖损伤区的概念,结合1号矿体成因定性分析边坡岩体松动破坏机理,提出主被动加固方式相结合的方法。通过计算主动土压力和假定横梁为集中力作用下两端自由的弹性地基梁,得到预应力锚索框架支护参数,按照工程类比法确定微型桩布置方式。实践证明,加固确保了滑坡体上方运输道路的正常使用,同时又为露天矿山向深部开采提供保障。The landslide treatment of the east rock slope in number 1 ore body in the Guilaizhuang Open-pit Mine of Shandong Gold Group Co Ltd is introduced. The causes of the landslip are analyzed by using traditional geological structure analysis method combined with the open-pit mining geological conditions. The loosening and failure mechanism of rock slope is qualitatively indicated by introducing the concept of Excavation Damage Zone integrated with the metallogenic factors, and then the combination reinforcement method with positive and passive reinforcement is proposed. The parameters of the prestressed anchor cable with lattice are obtained by calculating the active earth pressure and assuming the lattice as free-ended beam on elastic foundation, and the arrangement of micropiles is determined according to the engineering analogy method. It is proven in practice that the transportation road above the landslide is ensured to normally use by the treatment with the combination reinforcement method, simultaneously, the reliable way for the downward excavation of the open-pit mine is provided.

关 键 词：露天开采 滑坡治理 开挖损伤区 弹性地基梁 预应力锚索 微型桩 

分 类 号：TD854.6[矿业工程—金属矿开采]