摘要
为了研究影响采空区自燃"三带"分布因素的影响情况,以新疆乌苏四棵树煤矿A504工作面为研究对象,采用现场考察和数值模拟相结合的方法,考察了采空区自燃"三带",研究了氧气浓度、瓦斯浓度与到工作面距离的函数关系,自燃带宽度和位置与工作面风量和推进度的关系。结果表明,A504工作面采空区中氧气浓度、瓦斯浓度与到工作面的距离呈线性关系;工作面风量变化时,自燃带本身宽度变化不大,但风量减小时自燃带整体位置会向工作面靠近,风量增加时向采空区深部移动;随推进度的增加,自燃带整体会向采空区深部移动,自燃带起止位置、宽度与推进度均呈幂函数关系。
In order to study the influence of spontaneous combustion "three zones"factors distribution in goaf, the A504 working face of Sikeshu Coal Mine in Wusu city of Xinjiang Autonomous Region was taken as the research object to inspect the spontaneous combustion "three zones"in the goaf. A combination of on-site investigation and numerical simulation was used to study the functional relationship between oxygen concentration, gas concentration and distance to the working surface, and the relationship between the width and position of spontaneous combustion zone and the air volume and propulsion of the working surface. The results show that oxygen concentration and gas concentration in the goaf of the A504 working face are linear relationship with the distance to the working surface. When the working face air volume changes, the width of the spontaneous combustion zone itself does not change much, but when the air volume decreases, the overall position of the spontaneous combustion zone will approach the working face, and when the air volume increases, it moves deeper into the goaf; with the increase of working face advance rate, the spontaneous combustion zone will move to the deep part of the goaf, and the starting and ending position, width and propulsion of the working face advance rate will have a power function.
作者
黄森林
HUANG Senlin(China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400037,China)
出处
《煤矿安全》
CAS
北大核心
2018年第12期185-188,共4页
Safety in Coal Mines
关键词
采空区
自燃“三带”
瓦斯浓度
火灾防治
推进度
goaf
spontaneous combustion "three zone"
gas concentration
fire control
working face advance rate
作者简介
黄森林(1980一),男,汉族,四川广安人,高级工程师,主要从事煤矿瓦斯灾害防治与利用的研究和设计工作。
