摘要
介绍了高瓦斯低透气性深孔爆破增透技术的基本原理、钻孔布置、爆破及工艺设备等具体参数。深孔爆破后,增大了钻孔瓦斯有效抽放半径和高瓦斯煤层通透性,成倍地提高了瓦斯抽放率;而且降低了煤与瓦斯突出的威胁性,从而有效地解决了高瓦斯突出煤层采掘工作面瓦斯超限与煤与瓦斯突出的问题。
Has introduced the theory of Increase Permeability, parameters of layout of grouting borehole, process equipment, etc. After deep - hole blas- ting, further extend the efficient draining radius and increase the coal permeable, and finally raise the coal seam＇s gas -extracting quantity and gas- ex- tracting rate. Besides, it reduces the menace of coal - and - gas outburst, further solves the problem of gas concentration and gas out burst on working face in the high gas - outburst coal seam.
出处
《山东煤炭科技》
2010年第1期194-196,共3页
Shandong Coal Science and Technology
关键词
高瓦斯低透气性煤层
深孔爆破
增透技术
瓦斯抽放
High Gas and LOw Air Permeability Coal Seam Long - hole Pre - splitting Blast Increase Permeability Gas drainage
