煤矿安全2018，Vol.49Issue(2)：206-210,5.DOI:10.13347/j.cnki.mkaq.2018.02.055
深部高应力半煤岩巷失稳机理及支护技术
Instability Mechanism and Supporting Technology of Deep High Stress Semi-coal Rock Roadway
张满华 1张正新2
作者信息
- 1. 北京科技大学土木与资源工程学院,北京100083
- 2. 山东黄金矿业有限公司焦家金矿,山东烟台261441
- 折叠
摘要
Abstract
For 1402E haulage roadway,we research the instability mechanism and supporting technology of deep high stress semicoal rock roadway by the methods of field research,numerical simulation and engineering practice.The results show that the main reasons of instability of deep high stress semi-coal rock roadway are buried depth of high geo-stress and large deformation owing to the anisotropic lithology of surrounding rock of roadway.Supporting effect is the best in 1402E haulage roadway when the anchor belt net cable support is used,and anchor length is 2 200 mm,diameter is 22 mm,and anchorage length is 1 000 mm,the pre-tightening force is 130 kN.Within engineering practice,the mean convergence amount of roadway roof and floor is 661.5 mm,and the average convergence of two walls is 553.5 mm.关键词
高应力/半煤岩巷/失稳机理/支护技术/数值模拟Key words
high stress/semi-coal rock roadway/instability mechanism/supporting technology/numerical simulation分类
矿业与冶金引用本文复制引用
张满华,张正新..深部高应力半煤岩巷失稳机理及支护技术[J].煤矿安全,2018,49(2):206-210,5.
