留10m窄煤柱应力分布特征分析及顺槽支护技术研究
Analysis of Stress Distribution Characteristics of a 10 m Narrow Coal Pillar and Research on Channel Support Technology
梁发宽 1时圣亚 1杨晓威2
作者信息
- 1. 山西中阳华润联盛苏村煤业有限公司,山西 吕梁 033000
- 2. 江苏省第一工业设计研究院股份有限公司,江苏 徐州 221006
- 折叠
摘要
当前面临资源枯竭的矿井,采用减小区段煤柱的方式,可以有效提高资源回收率,增加经济效益,但缩短区段煤柱引起的围岩应力变化也给巷道维护带来了难度,需要针对性地研究加强支护措施.针对该问题,参照苏村煤矿 10208 工作面实际条件,借助理论计算和数值模拟方法,研究留设10 m护巷煤柱条件下的巷道发生的应力、位移及塑性变形情况,通过优化支护结构,提高支护强度,确保巷道的稳定性.
Abstract
Mines which currently facing resource depletion,adopting the method of reducing section coal pillars can effectively improve resource recovery rates and increase economic benefits.However,the stress changes in the surrounding rock caused by reducing section coal pillars also pose difficulties for roadway maintenance,support strengthening measures need to be targetedly researched.In response to this issue,referring to the actual conditions of the 10208 working face in Sucun Coal Mine,theoretical calculations and numerical simulation methods are used to study the stress,displacement,and plastic deformation situation happen in the roadway under the condition of setting a 10 m protective roadway coal pillar.By optimizing the support structure and improving the support strength,the stability of the roadway is ensured.
关键词
回采/巷道/窄煤柱/支护Key words
stoping/roadway/narrow coal pillar/support引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据