煤矿安全2024，Vol.55Issue(1)：176-184,9.DOI:10.13347/j.cnki.mkaq.20230931
复采巷道过空巷交叉段围岩控制技术
Surrounding rock control technology of crossing abandoned roadway intersection of compound mining area
吕建光 1张慧友 2顾伟 2徐大龙2
作者信息
- 1. 山西阳城阳泰集团宇昌煤业有限公司,山西 阳城 048100
- 2. 中国矿业大学 煤炭资源与安全开采国家重点实验室,江苏 徐州 221116
- 折叠
摘要
Abstract
Taking the surrounding rock control of the abandoned roadway under the geological conditions of the compound area of Yuchang Coal Mine as the engineering background,aiming at the problem of difficulty in breaking and supporting the surrounding rock in the area where the abandoned roadway intersects,the surrounding rock control technology scheme and parameters of the crushing section of the mining roadway were studied.The theoretical width of the coal pillar stability of the mining roadway is ob-tained by theoretical calculation,it is necessary to use the support method of shed to maintain the roadway stability when the width of the elastic core area of the coal pillar in the triangular area of the cross roadway is less than 2 m by numerical calculation.Through the theoretical calculation and numerical simulation analysis of the stress and deformation of the surrounding rock of the roadway during excavation and mining,a reasonable scaffolding support area and support scheme were determined.Field measurement shows that the joint support method of anchor mesh cable and I-beam shed can effectively control the deformation of the roadway.关键词
复采区/空巷/三角煤柱/围岩控制/数值模拟Key words
compound mining area/abandoned roadway/triangular pillars/surrounding rock control/numerical simulation分类
矿业与冶金引用本文复制引用
吕建光,张慧友,顾伟,徐大龙..复采巷道过空巷交叉段围岩控制技术[J].煤矿安全,2024,55(1):176-184,9.
