上社煤矿双巷掘进巷道布置及支护设计研究
Layout and Support Design of Double Roadway in Shangshe Coal Mine
韩晓斌1
作者信息
- 1. 阳泉市上社煤炭有限责任公司,山西阳泉 045100
- 折叠
摘要
以上社煤矿 9217 双巷掘进工作面为研究对象,采用UDEC数值模型分析了双巷掘进阶段及首工作面回采过程中不同煤柱尺寸下裂隙扩展演化及围岩变形特征.确定了合理的煤柱宽度为 12 m,并设计了 9217 回风顺槽锚索支护参数.将方案成功应用于上社煤矿的工程实践中,取得了理想的围岩控制效果,显著提高了开采效率,同时缓解了开采接替紧张的问题.
Abstract
Using UDEC numerical model,the fracture propagation evolution and surrounding rock deformation characteristics of 9217 double-roadway driving face in the double-lane driving stage and the mining process of the head working face under different coal pillar sizes were analyzed.The most reasonable width of coal pillar was determined to be 12 m,and the anchor cable support parameters of 9217 return air channel were designed.The scheme was successfully applied to the engineering practice of Shangshe Coal Mine,and the ideal surrounding rock control effect was obtained,the mining efficiency was significantly improved,and the problem of mining replacement was alleviated.
关键词
双巷掘进/巷道布置/支护设计/UDEC/区段煤柱Key words
double roadway tunneling/roadway layout/support design/UDEC/section coal pillar引用本文复制引用
出版年
2024
NETL
NSTL
万方数据