J形工作面采空区瓦斯运移规律分析  

Analysis of Gas Migration Law in Goaf of J-shaped Working Face

作　　者：王丽超 WANG Lichao(Jinneng Holding Coal Industry Group Co.,Ltd.Silaogou Mine Safety Supervision Station,Datong 037003,Shanxi,China)

机构地区：[1]晋能控股煤业集团有限公司四老沟矿安监站,山西大同037003

出　　处：《凿岩机械气动工具》2025年第2期79-81,共3页Rock Drilling Machinery & Pneumatic Tools

摘　　要：某煤矿J形工作面因采煤深度不断加深,采空区流场与瓦斯运移规律发生变化。为此,文章采用Fluent软件对矿井尾巷进行数值模拟,通过分析瓦斯主要来源、运移规律与流场,得出采煤工作面尾巷断面积增大会增加漏风量,但尾巷断面积增加对采空区较深部位的影响力呈减弱趋势。在该矿采煤工作面实际通风量为2200 m^(3)/min的前提下,尾巷断面积最小值应为7.2 m^(2)。Due to the deepening of coal mining depth in J-shaped working face of a coal mine,the fl ow fi eld and gas migration law in goaf change.For this reason,this paper uses Fluent software to carry out numerical simulation of mine tail roadway.By analyzing the main source,migration law and fl ow fi eld of gas,it is concluded that the increase of tail roadway section area in coal mining face will increase air leakage,but the infl uence of the increase of tail roadway section area on the deeper part of goaf is weakened.Under the premise that the actual ventilation capacity of the coal mining face in the mine is 2200 m^(3)/min,the minimum section area of the tail roadway should be 7.2 m^(2).

关 键 词：采空区 瓦斯运移规律 通风系统 

分 类 号：TD712[矿业工程—矿井通风与安全]