金属矿破碎带巷道围岩支护优化设计  

Optimization design of roadway surrounding rock support in fractured zone of a metal mine

作　　者：许金成 张绍江 李岗 杨明东 XU Jincheng;ZHANG Shaojiang;LI Gang;YANG Mingdong

机构地区：[1]南京安吉特矿山工程有限公司,江苏南京211100

出　　处：《中国矿山工程》2021年第6期92-96,共5页China Mine Engineering

摘　　要：某金矿在进入深部开采后,出现了围岩大变形破坏,巷道顶板出现破碎冒落,两帮片状、板状剥落,支护出现大面积失效情况。针对此现象,基于松动圈理论对破碎巷道围岩进行支护优化设计。通过测算围岩松动圈,确定其松动范围为1.5~2.0 m。确定了支护形式选用锚杆+短锚索+金属网的支护方案。经过工程实践,巷道收敛及锚杆受力效果良好,能够为相似条件矿山提供借鉴。With the deep mining of a certain gold mine,large deformation of roadway surrounding rock occurred,causing the fracture and caving of the roadway roof and the flaky and platy peeling of the two roadsides,showing a large area of support failure.In view of this phenomenon,support optimization design was carried out for the fractured roadway surrounding rock based on the loose circle theory.By measuring the surrounding rock loose circle,the loosening range is confirmed to be 1.5~2.0 m.The supporting scheme of rock bolt+short anchor cable+metal mesh was adopted.Through engineering practice,the effect of roadway convergence and rock bolt stress is good,which can provide reference for mines with similar conditions.

关 键 词：金属矿 破碎 巷道 支护设计 优化 

分 类 号：TD353[矿业工程—矿井建设]