煤矿安全2018，Vol.49Issue(1)：168-171,4.DOI:10.13347/j.cnki.mkaq.2018.01.045
复杂应力场下煤巷围岩锚网索支护应用分析
Application Analysis of Bolt-mesh-anchor Support in Surrounding Rock of Coal Roadway Under Complex Stress Field
高山 1张国龙 1高贯林2
作者信息
- 1. 山东科技大学矿业与安全工程学院,山东青岛266590
- 2. 泰安泰烁岩层控制科技有限公司,山东泰安271200
- 折叠
摘要
Abstract
Based on the geological conditions of 2312 panel in Tangyang Coal Mine of Shandong province,the application of boltmesh-anchor-supporting in surrounding rocks of coal roadway with complex stress field is analyzed and optimized through its mechanical characteristics utilizing the FLAC3D numerical simulation.Results show that the highly concentrated stress with the butterfly asymmetrical distribution is obvious due to the effect of the complex stress field;the affected-zone of the outside rib is larger than that of the other rib.Compared with the common supporting,the strata behaviors of the roadway are relatively light,which shows that the roof subsidence and the ribs convergence are smaller.According to the measurement,the numerical results from the bolt-mesh-anchor-supporting can effectively control the deformation of surrounding rocks and meet the expected goal.关键词
预紧力/构造应力/侧向支承压力/表面支护/煤巷围岩Key words
pre-tightening force/tectonic stress/lateral abutment pressure/surface support/coal roadway surrounding rock分类
矿业与冶金引用本文复制引用
高山,张国龙,高贯林..复杂应力场下煤巷围岩锚网索支护应用分析[J].煤矿安全,2018,49(1):168-171,4.
