摘要
介绍了有效抽放半径的测定方法及现场施工,利用相对瓦斯压力指标来测定宏鑫煤矿B1煤层的钻孔抽采瓦斯的抽放影响半径和有效抽放半径。最终得出有效抽放半径与预抽时间的关系。可以有效避免无效重叠和空白带,提高工作效率。
The method and practice of the effective drainage radius are introduced, determines the effective drainage radius of Hongxin coal mine B1 seam coal with relative pressure indicators. Eventually comes to an effective relationship between the radius and the pre-drainage pumping time. Which can effectively avoid overlaps and blank tape, improves work efficiency.
出处
《煤炭技术》
CAS
北大核心
2015年第3期148-150,共3页
Coal Technology
关键词
瓦斯抽放
抽采钻孔
相对瓦斯压力
有效抽放半径
gas drainage
drainage hole
relative pressure of gas
effective drainage radius
