不同风速和高温点下采空区瓦斯分布规律研究  

Study on Gas Distribution Law of Goaf at Different Wind Speeds and High Temperature Points

作　　者：高昂 张雷林[1] 夏翠萍 GAO Ang;ZHANG Leilin;XIA Cuiping(School of Safety Science and Engineering,Anhui University of Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001

出　　处：《煤炭技术》2023年第4期132-135,共4页Coal Technology

基　　金：安徽理工大学校级一般项目(QN2019123);国家自然科学基金项目(51874008,51504009)。

摘　　要：为了研究不同风速和采空区不同位置存在高温点时的瓦斯运移规律,采用了自建的采空区模拟实验台,分别对工作面风速为0.2、0.6、1.0 m/s以及采空区进、回风侧有、无煤自燃时的瓦斯运移规律进行研究。得出:随着工作面风速的增加,采空区各测点的瓦斯浓度均有所降低,采空区中的瓦斯爆炸危险区域面积也逐渐变小;采空区进、回风侧高温点附近区域瓦斯浓度均明显增加,瓦斯爆炸危险区域比常温时也有所增加且增加幅度与竖直方向的高度呈反比关系。In order to study the gas migration law with different wind speeds and high temperature points at different positions in the goaf,the self-built goaf simulation test bench is used.The law of gas migration is studied on the wind speed of the working face is 0.2,0.6,1.0 m/s,and the gob inlet and return air sides have and without coal spontaneous combustion.It is concluded that with the increase of the wind speed of the working face,the gas concentration of each measuring point in the goaf decreases,and the area of the gas explosion danger area in the goaf also decreases gradually;when the gas concentration in the areas near the high temperature points on the inlet and return air sides of the gob increased significantly,the gas explosion danger area also increased compared with normal temperature,and the increase range was inversely proportional to the height in the vertical direction.

关 键 词：工作面风速 高温点 瓦斯分布 瓦斯爆炸危险区域 

分 类 号：TD752[矿业工程—矿井通风与安全] TD712.7