摘要
针对松软煤层钻进困难、成孔深度浅、成孔率低等问题,在广泛调研国内相关技术的基础上,提出应用软煤钻机与整体铣削式外平螺旋钻杆利用井下压风进行复合排渣钻进的技术,并集成了钻进参数监测、孔口除尘、矿渣输送等相关配套功能。通过煤矿现场工业性试验表明,该套技术装备整体运行可靠,大幅提高了松软煤层中的钻进深度与成孔率。
For the problems of drilling difficulties in soft coal seam, shallow hole depth and low hole formation rate, on the basis of extensive research of domestic related technology, we use soft coal drill rig and overall milling type outer spiral drill pipe to carry on composite slag discharge drilling by compounding air pressure. The complete drill rig integrated the drilling parameters monitoring, drilling hole dust removal and composite slag discharge. The coal field industrial test showed that the complete drill rig was reliable, greatly improved the drilling depth and hole-forming rate in soft coal seam.
出处
《煤矿安全》
北大核心
2017年第7期99-102,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51275061)
关键词
松软煤层
瓦斯抽采
钻机
螺旋钻杆
复合排渣钻进
soft coal seam
gas drainage
drill rig
spiral drill pipe
composite slag discharge drilling
