煤矿安全2024，Vol.55Issue(6)：200-205,6.DOI:10.13347/j.cnki.mkaq.20231455
复杂软弱煤层条件下高转速大扭矩钻探装备设计及试验研究
Design and experimental study of high speed and high torque drilling equipment in complex weak coal seam
摘要
Abstract
The drilling effect of complex and weak coal seams is of great significance for gas extraction in mines.A ZDY6000LR high-speed tracked drilling rig with high rotational speed,high power,and high torque performance was designed to address the problems of difficult slag removal,high accident rate,and hole formation during the drilling construction of complex and weak coal seams in Wangpo Coal Mine.The maximum torque was 6000 N·m and the maximum speed was 400 r/min.The layout,power head,angle adjustment mechanism,feed body,and hydraulic system of the drilling rig were optimized to ensure that the problems such as sticking and collapsing during the drilling process can be effectively solved during the construction process.The ϕ95/ϕ60.3 mm wide blade insert sealed auger rod with high strength and not easy to break teeth is developed and designed,and the ϕ113 mm,ϕ120 mm,ϕ133 mm triangular ladder PDC bits with high strength and low risk of broken teeth are also designed.The on-site industrial test at the 3206 working face of Wangpo Coal Mine has shown that this set of drilling equipment and drill assembly effectively solved the problems existing in the construction process such as slag discharge difficulty and top drilling of the jet hole,and improved the hole formation rate of the drilling,and the hole formation rate of the drilling above 100 meters was more than 70%,which provided an important support for the gas extraction of the coal seam of the mine.关键词
复杂软弱煤层/高转速履带钻机/插接密封螺旋钻杆/瓦斯抽采/成孔率Key words
complex weak coal seam/high speed crawler drill/plug and seal screw drill pipe/gas extraction/pore forming rate分类
矿业与冶金引用本文复制引用
宋昱播..复杂软弱煤层条件下高转速大扭矩钻探装备设计及试验研究[J].煤矿安全,2024,55(6):200-205,6.基金项目
国家自然科学基金资助项目(41972167) （41972167）
陕西省重点研发计划资助项目(2018GY-078) （2018GY-078）
天地科技股份有限公司科技创新创业资金专项重点资助项目(2020-TD-ZD003) （2020-TD-ZD003）
