煤矿安全2019，Vol.50Issue(10)：212-215,4.DOI:10.13347/j.cnki.mkaq.2019.10.049
大采高双巷掘进巷间煤柱合理宽度研究
Reasonable Width of Coal Pillar Between Roadways During Double Lane Driving with Large Mining Height
白文勇 1徐青云 2李永明 2李通达2
作者信息
- 1. 西安科技大学 能源学院,陕西 西安 710054
- 2. 山西大同大学 煤炭工程学院,山西 大同 037007
- 折叠
摘要
Abstract
In order to solve the problem of setting up narrow coal pillar in large mining height working face of deep well, taking the coal pillar between haulage gate and gas drainage roadway of 62101 large mining height face in the second panel as the engineering background, theoretical analysis and numerical simulation are used to systematically analyze the size of the section coal pillar. The coal pillar crushing zone width is 2.52 m by using limit equilibrium theory after the first mining, and the width of pillar between roadways was determined as 7.98 m. On the basis of theoretical analysis, the stress evolution law, the elastic-plastic region variation and the roadways deformation law of different pillars with the width of 4 m, 6 m, 8 m, 10 m were studied by numerical simulation. Comprehensive analysis of theoretical research and numerical simulation results, the actual production geological conditions of the working face were taken into consideration, the width of the coal pillar was determined to be 8 m.关键词
大采高工作面/双巷掘进/巷间煤柱/理论分析/数值模拟Key words
large mining height working face/double lane tunneling/pillar between roadways/theoretical analysis/numerical simulation分类
矿业与冶金引用本文复制引用
白文勇,徐青云,李永明,李通达..大采高双巷掘进巷间煤柱合理宽度研究[J].煤矿安全,2019,50(10):212-215,4.
