陕西煤炭2025，Vol.44Issue(3)：29-35,7.DOI:10.20120/j.cnki.issn.1671-749x.2025.0305
基于数值模拟和经验公式的榆神矿区防隔水煤岩柱最小宽度研究
Minimum width of coal rock pillars in in Yushen mining area based on numerical simulation and empirical formula
徐裴 1白喜成 1慕健强1
作者信息
- 1. 陕西小保当矿业有限公司,陕西 榆林 719302
- 折叠
摘要
Abstract
Reasonable determination of the size of the coal rock pillar is of great significance to ensure the safe and efficient production of the working face.Taking the actual geology and mining conditions of 132203 working face of Xiaobaodang No.2 Coal Mine as the engineering background,theoretical analysis,engineering analogy,and discrete element numerical simu-lation were used to analyze the overburden fissure evolution law and the safe coal rock pillar size in the process of mining.The study shows that the number of shear cracks is always larger than the number of tensile cracks in the process of mining,and the damage form of the roof is mainly in the form of shear damage.On the basis of judging the hardness of overburden rock as medium-hard type,the minimum width of the critical waterproof(sand)coal rock pillar for safe mining in the working face is calculated to be 14.99 m,at which time the water-conducting fissure zone will not affect the upper aquifer.The re-search results can provide a reference for solving the problem of safe coal rock pillars in the working face under similar geo-logical and mining technology conditions.关键词
高强度开采/煤岩柱/塑性区/导水裂隙带Key words
high-intensity mining/coal rock pillar/plastic zone/water-conducting fissure zone分类
矿山工程引用本文复制引用
徐裴,白喜成,慕健强..基于数值模拟和经验公式的榆神矿区防隔水煤岩柱最小宽度研究[J].陕西煤炭,2025,44(3):29-35,7.
