首云铁矿-76m水平大断面硐室施工及稳定性分析  

Stability Analysis and Construction of the Chamber of Shouyun Iron-76 m Level Large Scale Section

作　　者：胡书桥 李兵磊 李永兵[2] 严成涛 

机构地区：[1]金诚信矿业管理股份有限公司 [2]北京科技大学土木与环境工程学院

出　　处：《现代矿业》2015年第5期112-115,共4页Modern Mining

摘　　要：首云铁矿沙场矿区－76 m 水平机修硐室位于地质图7～8勘探线，硐室上方区域存在 F21和 F33断层，围岩比较破碎，在开挖过程中，受应力释放和调整的影响，硐室稳定性较差。为此，采用导硐＋天井、锚喷支护施工方案，基于3DEC 数值模拟软件对开挖支护过程进行了数值模拟。结果表明，未支护前，硐室的最大位移量为60 mm，并出现楔形掉块，锚喷支护后，硐室最大位移量为7 mm，取得了较好的施工效果。The -76 m level machine repair chamber in shachang mining area of shouyun mining is located between the exploration lines 7 and 8 F21 and F33 faults are existing above the regional chamber, and the surrounding rock is broken,in the process of excavation,under the condition of the stress release and adjustment,the stability of chamber is poor.Thus,the support construction program of pilot tunnels＋patio and shotcrete is proposed,the process of excavation and support are numerical simulated by suing 3DEC numerical simulation software.The simulation results show that,before supporting,the maximum displacement of the chamber is 60 mm,while the maximum displacement chamber is 7 mm by taking the above supporting measures,so the perfect support effect is obtained.The research results in this paper can provide the basis for determining supporting parameters and construction of chamber under the similar engineering geological condition in non-coal mines.

关 键 词：大断面机修硐室 导硐法施工 喷锚支护 稳定性分析 

分 类 号：TD264.3[矿业工程—矿井建设]