[1]姚琦,冯涛,王卫军,等.极破碎围岩半煤岩巷变形破坏机理及支护控制研究[J].中国安全生产科学技术,2015,11(5):32-39.[doi:10.11731/j.issn.1673-193x.2015.05.005]
YAO Qi,FENG Tao,WANG Wei-jun,et al.Study on deformation and failure mechanism and support control measure of half coal rock roadway under extremely fractured surrounding rock[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(5):32-39.[doi:10.11731/j.issn.1673-193x.2015.05.005]
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极破碎围岩半煤岩巷变形破坏机理及支护控制研究
YAO Qi,FENG Tao,WANG Wei-jun,et al.Study on deformation and failure mechanism and support control measure of half coal rock roadway under extremely fractured surrounding rock[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(5):32-39.[doi:10.11731/j.issn.1673-193x.2015.05.005]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 11
- 期数:
- 2015年5期
- 页码:
- 32-39
- 栏目:
- 学术论著
- 出版日期:
- 2015-05-30
文章信息/Info
- Title:
- Study on deformation and failure mechanism and support control measure of half coal rock roadway under extremely fractured surrounding rock
- Keywords:
- extremely fractured and soft rock; half coal rock roadway; failure mechanism; roadway support
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 针对强膨胀性极破碎围岩半煤岩巷出现的大底臌、折帮和顶板下沉等变形破坏和支护困难的问题，运用力学理论分析、数值模拟分析和现场试验研究相结合的方法，研究了巷道变形破坏机理及其控制策略。研究表明：在原以工字钢拱架为主的被动支护条件下，巷道变形破坏受到吸水膨胀、软弱夹层、节理等弱结构面多重影响，巷道变形破坏严重。提出了“全断面锚索+金属网、钢带、梯子粱”联合支护，经过现场实践，掘进巷道在新方案支护183天后，两帮、顶底板收敛变形明显减小，变形处于相对稳定状态，达到了支护效果。
- Abstract:
- Aiming at the problems of deformation and failure such as large floor heave, rib spall and roof fall existing in half coal rock roadway under extremely fractured surrounding rock with strong dilatability and difficult support, the deformation mechanism and control strategy of roadway were researched by the combination of mechanical theory analysis, numerical simulation and field test. The results showed that under the original passive support form of arch beam, the deformation and failure of roadway were influenced by multiple effects of water absorption expansion, weak interlayer, joints and so on, and the deformation and failure of roadway were serious. The combined support scheme of "full section cable+ metal net, steel strip and ladder beam" was put forward. Through the field test by the new scheme, the convergence and deformation in two sides, roof and floor of excavation roadway reduced significantly 183 days later, the deformation was in a relatively stable state, and the support effect was achieved.
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备注/Memo
- 备注/Memo:
- 国家自然科学基金项目（51274095）；国家自然科学基金重点项目（51434006）；湖南省煤矿安全开采技术重点实验室开放基金（201402）
