摘要
顶板岩石钻孔抽放瓦斯技术,主要是利用布置在煤层顶板中的钻孔,在抽放泵负压作用下,改变采空区冒落带和裂隙带内积存的瓦斯流向,使其直接进入回风巷,减少工作面的风排瓦斯量,控制上隅角瓦斯积聚。
The gas management technology of the roof rock boreholes is described as follows： applies the boreholes arranged in the roof, under the action of the drainage pump negative pressure, changes the flow direction in the goal fall district and crack district, nkakes it into the wind rodaway, reduces the wind gas amount, controis the comer gas accumulation.
出处
《煤炭技术》
CAS
2007年第4期60-61,共2页
Coal Technology
