采矿与安全工程学报Issue(2)：298-304,7.DOI:10.13545/j.cnki.jmse.2015.02.020
复杂条件下深井马头门围岩稳定性分析及支护结构优化
Rock stability analysis and supporting structure optimization of deep shaft ingate under complex conditions
摘要
Abstract
In response to such complex conditions as extremely broken rocks, one thousand meters depth, and large size section of new auxiliary shaft ingate in Haizi mine in Huaibei city, shaft ingate rock stability has been analyzed by ABAQUS finite element numerical software for original support de-sign scheme, and distribution law of displacement field, stress field, plastic zone of ingate surrounding rock and mechanical characteristics of ingate supporting structure have been shown. The supporting structure design of ingate has been optimized according to numerical analysis result. Ingate primary supporting structure is composed of bolt, steel mesh, shotcrete and anchor. Ingate secondary support is composed of whole section steel fiber reinforced concrete lining with bottom arch, floor grouting bolt and floor anchor. Strength grade, steel fiber incorporation rate and the optimal mix of steel fiber rein-forced concrete have been determined through laboratory tests. Field monitoring results show that ingate supporting structure has higher safety reserve and the design optimization is reasonable.关键词
马头门/围岩稳定性/数值模拟/支护结构优化Key words
ingate/rock stability/numerical simulation/supporting structure optimization分类
矿业与冶金引用本文复制引用
蔡海兵,程桦,荣传新,宋海清,黎明镜..复杂条件下深井马头门围岩稳定性分析及支护结构优化[J].采矿与安全工程学报,2015,(2):298-304,7.基金项目
国家自然科学基金项目(50874002)；安徽省高等学校省级自然科学研究项目(KJ2010B318，KJ2012A094) （50874002）
