煤矿安全2017，Vol.48Issue(6)：184-187,191,5.DOI:10.13347/j.cnki.mkaq.2017.06.049
综放沿空煤巷破坏机理及不对称支护控制
Failure Mechanism of Fully Mechanized Caving Roadway Along Goaf and Asymmetric Supporting Control
李冬 1石臻 1宋春宇 1徐福通1
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
- 折叠
摘要
Abstract
By the combined method of theoretical analysis,field measurement and numerical simulation,we analyze overlying rock breaking and migration laws of a mine narrow coal pillar support,we get that the basic roof fracture location within coal pillar is 6.5 m,and the rotary sinking motion of key block B of basic roof is the root cause of roof asymmetric deforamtion and horizontal shear diastrophism and coal pillar instability and failure of roadway.The implementation of asymmetric "multi anchor cables-channel steel-reinforced beam combination" key supporting system,there is no separation phenomenon for return air roadway in 605 fully mechanized working face under the influence of mining,and roadway maintenance status is relatively stable.关键词
窄煤柱/破断位置/UDEC模拟/不对称支护/矿压观测Key words
narrow coal pillar/fracture position/UDEC simulation/asymmetric support/mine pressure observation分类
矿业与冶金引用本文复制引用
李冬,石臻,宋春宇,徐福通..综放沿空煤巷破坏机理及不对称支护控制[J].煤矿安全,2017,48(6):184-187,191,5.
