采动影响巷道支护方案设计及效果
Design and Effectiveness of Support Schemes for Tunnels Affected by Mining Influence
祝建东1
作者信息
- 1. 晋能控股煤业集团马脊梁矿,山西大同 037000
- 折叠
摘要
为减少松软煤层围岩巷道受采动影响的破坏,提高煤层开采的安全性,以某矿为对象,分析该矿松软煤层在采动影响下围岩的变化规律,设计巷道联合支护技术为"锚网喷+锚索梁+注浆".与无支护技术相比,经联合支护优化后,该矿巷道顶底板及两帮变形量分别降低68.5%、50%、61%,降幅明显,表明该联合支护技术能有效控制围岩变形,支护效果好.
Abstract
In order to reduce the damage of soft coal seam surrounding rock roadway caused by mining and improve the safety of coal seam mining,taking a certain mine as an object,the change law of surrounding rock under the influence of mining in the soft coal seam of the mine is analyzed,and the joint support technology of the roadway is designed as"anchor net spraying+anchor cable beam+grouting".Compared with the unsupported technology,after joint support optimization,the deformation of the roof,floor,and two sides of the mine roadway were reduced by 68.5%,50%,and 61%,respectively,with a significant decrease.This indicates that the combined support technology can effectively control the deformation of the surrounding rock and has a good support effect.
关键词
采动影响/松软煤层/联合支护/注浆/锚索梁Key words
mining influence/soft coal seam/combined support/grouting/anchor cable beam引用本文复制引用
出版年
2024
NETL
NSTL
万方数据