陕西煤炭2026，Vol.45Issue(10)：1-7,7.DOI:10.20120/j.cnki.issn.1671-749x.2026.1001
基于数值模拟的煤矿老巷分布对采空区氧气与安全性影响研究
Impact of coal mine old roadway distribution on oxygen and safety in goaf based on numerical simulation
摘要
Abstract
In response to the problem that the air leakage of old roadways in the repeated mining face aggravates the expansion of the oxidation zone in the goaf and the risk of coal spontaneous combustion,we study the influence of different old roadway layouts(parallel,inclined and staggered)on the oxygen distribution and safety of the goaf through numerical simulation.The results show that the air leakage of old roadways significantly increases the oxygen concentration in the goaf and expands the range of the oxidation zone(the width increases by more than 40%).Especially when the old roadway is far away from the working face,the oxidation zone extends to the deep part of the goaf,and the spontaneous combustion danger area increases greatly.Among them,the inclined and staggered arrangement of the old roadway has a greater impact,and the width of the oxidation zone on the inlet/return air side can be extended to more than 300 m.Therefore,it is necessary to block the air leakage channel of old roadways in order to control the width of the oxidation zone and ensure safe production.关键词
复采工作面/老巷布置/采空区氧化带/数值模拟Key words
remining working face/arrangement of old roadways/oxidation zone in goaf/numerical simulation分类
矿业与冶金引用本文复制引用
王昕,翁应康..基于数值模拟的煤矿老巷分布对采空区氧气与安全性影响研究[J].陕西煤炭,2026,45(10):1-7,7.基金项目
国家自然科学基金(52374087) （52374087）
