煤矿安全2017，Vol.48Issue(11)：88-91,4.DOI:10.13347/j.cnki.mkaq.2017.11.023
深部高应力沿空掘巷非对称支护技术
Asymmetrical Supporting of Gob-side Entry Driving in Deep Roadway with High Stress
郑伟1
作者信息
- 1. 贵州理工学院矿业工程学院,贵州贵阳550003
- 折叠
摘要
Abstract
In order to solve difficult support problems of gob-side entry driving in deep high stress disturbance of surrounding rock,an example of the fourth mining area auxiliary track tunnel in-808 m of Guotun Coal Mine is presented,through analyzing the roadway surrounding rock deformation and failure characteristics and influencing factors of the deformation,the "the high strength and high pretension yieldable bolt + anchor + metal mesh + ladder" of asymmetric network and cable support scheme is proposed to optimize the supporting ways and supporting parameters.By using the finite difference software FLAC3D,the numerical simulation is carried out for gob-side entry driving in the deep high stress disturbance surrounding rock.The stress of the surrounding rock is significantly lower than that of the original scheme,and the deformation of top and floor and the two walls are effectively controlled.The field application and observation results show that the stress distribution of the surrounding rock of the tunnel is better than that of the non-symmetrical anchor net.关键词
深部巷道/高应力/沿空掘巷/非对称支护/数值模拟Key words
deep roadway/high stress/gob-side entry driving/asymmetric supporting/numerical simulation分类
矿业与冶金引用本文复制引用
郑伟..深部高应力沿空掘巷非对称支护技术[J].煤矿安全,2017,48(11):88-91,4.
