孤岛工作面沿空巷道合理支护参数研究
Research on Reasonable Support Parameters for Along Gob Tunnels in Island Faces
刘勋 1张玲 2刘云强 3赵盛男4
作者信息
- 1. 新汶矿业集团有限责任公司,山东泰安 271200
- 2. 尤洛卡(山东)矿业科技有限公司,山东泰安 271200
- 3. 鄂托克前旗长城煤矿有限责任公司,内蒙古鄂尔多斯 016215
- 4. 山东大学齐鲁交通学院,山东济南 250000
- 折叠
摘要
针对围岩松软采空区下孤岛工作面沿空掘巷支护,本文采用FLAC3D数值模拟软件,对不同支护方案下围岩松软采空区孤岛工作面沿空掘巷支护效果进行模拟分析,研究巷道工作面变形演化特征.研究结果显示,单侧工作面采空和两侧都采空的巷道变形量相似,上部7227工作面采空有利于巷道支护,采用联合注浆加固支护方式对松软破碎围岩巷道效果更佳.
Abstract
In response to the support effect of the excavation roadway along the goaf in the isolated working face of the soft sur-rounding rock goaf,this paper uses FLAC3D numerical simulation software to simulate and analyze the support effect of the ex-cavation roadway along the goaf in the isolated working face of the soft surrounding rock goaf under different support schemes,and studies the deformation evolution characteristics of the roadway working face.The research results show that the deforma-tion of tunnels with goaf on one side and both sides is similar.The goaf on the upper 7227 working face is beneficial for tunnel support,and the use of combined grouting reinforcement support method is more effective for soft and fractured surrounding rock tunnels.
关键词
孤岛工作面/沿空掘巷/支护Key words
island working face/tunneling along the goaf/support引用本文复制引用
出版年
2024
NETL
NSTL
万方数据