回风大巷支护方案优化数值模拟研究  

Numerical Simulation on Optimization of Support Scheme of Air Return Roadway

作　　者：李强强 LI Qiangqiang(Taiye Coal Industry Co.,Ltd.,Shanxi Loujun Group,Lvliang 033000,Shanxi,China)

机构地区：[1]山西楼俊集团泰业煤业有限公司,山西吕梁033000

出　　处：《能源与节能》2022年第10期61-63,共3页Energy and Energy Conservation

摘　　要：为了解决回风大巷原支护方案支护效果不佳的问题,利用数值模拟软件对回风大巷支护方案进行设计优化。首先利用数值模拟软件对原支护方案进行模拟研究,发现在巷道两帮位置出现一定的应力集中,且底板及两帮的塑性破坏范围较大,因此提出“锚杆+托架+锚索+金属网”的支护方案。通过模拟,发现优化后缩小间排距使得支护成本降低且应力控制效果有所提升,同时巷道两帮破坏范围减小,优化后支护对巷道塑性破坏范围的控制明显提升,为矿井降本增效做出了一定贡献。In order to solve the problem of poor support effect of the original support scheme of air return roadway, this paper used numerical simulation software to design and optimize the support scheme of air return roadway. Firstly, the numerical simulation software was used to simulate and study the original support scheme. It was found that there was a certain stress concentration at the two sides of the roadway, and the plastic failure range of floor and two sides was large. Therefore, the support scheme of "bolt + bracket + anchor cable + metal mesh" was given. Through simulation, it was found that reducing the row spacing after optimization reduced the support cost and improved the stress control to a certain extent. At the same time, the failure range of the two sides of the roadway was reduced. The optimized support significantly improved the control of the plastic failure range of the roadway, and made a certain contribution to reducing the cost and increasing the efficiency of the mine.

关 键 词：数值模拟 支护方案 支护优化 围岩变形 

分 类 号：TD353[矿业工程—矿井建设]