煤矿安全2018，Vol.49Issue(3)：209-212,217,5.DOI:10.13347/j.cnki.mkaq.2018.03.056
大倾角煤层回采巷道底鼓机理及控制技术
Mechanism and Control Technology of Floor Heave in Mining Roadway of Large Dip Coal Seam
韩磊 1侯水云 2张小康3
作者信息
- 1. 中国矿业大学(北京),北京100083
- 2. 山西焦煤集团有限责任公司,山西太原030000
- 3. 霍州煤电集团有限责任公司,山西霍州034000
- 折叠
摘要
Abstract
In view of the serious problem of floor heave of mining tunnel in 5-107 working face of Pangpangta Mine,this paper analyzes the mechanism of floor heave of the mining roadway under the influence of mining,and sets up the mechanical model of floor heave which is affected by mining,and carries out the stress analysis.At the same time,FLAC3D simulation is used to study the deformation and failure laws of the mining roadway.The results show that the effect of controlling floor heave in mining tunnel is remarkable by the method of excavating pressure relief groove,and the maximum floor heave quantity corresponding to pressure relief groove depth of 0.5 m,1.0 m,1.5 m,2.0 m is 302.6 mm,256.5 mm,217.8 mm and 170.0 nm respectively;with the increase of the depth of the pressure relief groove,the maximum floor heave quantity is gradually reduced and the number of roadway pull-down is obviously reduced,which results in very considerable economic benefits.关键词
回采巷道/底鼓/控制机理/数值模拟/卸压槽/大倾角煤层Key words
mining roadway/floor heave/control mechanism/numerical simulation/pressure relief groove/large dip coal seam分类
矿业与冶金引用本文复制引用
韩磊,侯水云,张小康..大倾角煤层回采巷道底鼓机理及控制技术[J].煤矿安全,2018,49(3):209-212,217,5.
