陕西煤炭2026，Vol.45Issue(4)：82-87,101,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.0415
深埋运输巷区段煤柱合理宽度的确定及断面优化选择
Determination of reasonable width and section optimization of coal pillars in deep buried transportion roadway sections
王晓飞1
作者信息
- 1. 中煤天津设计工程有限责任公司,天津 300120
- 折叠
摘要
Abstract
To determine the rational width of the section coal pillar and the optimal roadway cross-section in the No.7 coal mining area of Dananhu Coal Mine,theoretical calculations,numerical simulations,and field measurements were employed for determination,leading to the following conclusions.Through theoretical calculations,the width of the plastic zone in the coal pillar with one-side mined-out was determined as X0=7.2 m,and the rational width of the coal pillar was derived as B=19.52～24.72 m.Comparative analyses of different coal pillar widths and roadway cross-section configurations were con-ducted,confirming that a coal pillar width of 20 m is suitable for this mine,with the optimal roadway cross-section being a straight-wall arched section.Field measurements revealed that the maximum displacement of the roof and floor of the road-way reached 92 mm,and the maximum sidewall displacement reached 165 mm.The loads on bolts and cables did not exceed their yield limits,indicating good stability of the roadway surrounding rock and ensuring safe production.关键词
大南湖煤矿/巷道断面/区段煤柱/数值模拟Key words
Dananhu Coal Mine/roadway section/sectional coal pillar/numerical simulation分类
矿业与冶金引用本文复制引用
王晓飞..深埋运输巷区段煤柱合理宽度的确定及断面优化选择[J].陕西煤炭,2026,45(4):82-87,101,7.
