摘要
由采空区瓦斯涌出的来源可知,采空区内本层瓦斯涌出是由未采分层煤块和丢煤等涌出构成,而邻近层及围岩瓦斯涌出是与时间有关系的。如果以一定面积的采空区为研究对象,采空区瓦斯涌出也和落煤、煤壁是按同一形式衰减曲线逐渐枯竭的。而当以面积不断扩大的整个工作面的采空区为研究对象时,采空区瓦斯涌出量呈现的变化,可以通过一定的方法计算出来。
From the gas which comes from the worked - out area , the gas which comes from the worked - out area layer is composed of the unmined layer coal block and missing coal, gas which comes from the neighboring layer and surround rock is related to time. If the limited area of worked - out area is defined as research ob- ject, the gas from the worked - out area will gradually weaken in a weaken line which is in the same form of dropped coal and coal side, when worked - out area of the whole coal face which expands continuously, then the gas comes from the worked - out area will change by regularity and be computed by a definite method.
出处
《煤炭技术》
CAS
2007年第8期71-72,76,共2页
Coal Technology
基金
国家自然基金资助项目(50574047)
关键词
采空区
瓦斯
邻近层
worked - out area
gas
neighboring layer
