宏鑫煤矿预抽钻孔瓦斯有效抽放半径测定  

Determination of Effective Drainage Radius of Pre-pumping Gas Drilling in Hongxin Coal Mine

作　　者：范加锋 

机构地区：[1]煤科集团沈阳研究院有限公司,沈阳110016 [2]煤矿安全技术国家重点实验室,沈阳110016

出　　处：《煤炭技术》2015年第3期148-150,共3页Coal Technology

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.

关 键 词：瓦斯抽放 抽采钻孔 相对瓦斯压力 有效抽放半径 

分 类 号：TD712.6[矿业工程—矿井通风与安全]