重庆南桐矿区瓦斯抽放孔快速钻探技术措施

Technology Measures for High-speed Drilling in Gas Drainage Boreholes in Nantong Mining Area of Chongqing

摘要:

针对研究区岩层性质和技术状况，通过钻具的优选和合理级配，以及钻进方法、钻头类型与参数、钻进工艺、操作技术的研究，得出一套提高钻孔钻进速度的技术措施，在研究区软-坚硬互层地层瓦斯抽放钻孔施工中，台月效率比原来提高80％以上。

Abstract:

According to the rock properties and technical conditions in the research area, through the optimization and reasonable gradation of drilling equipments and the analysis on drilling method , bit types and parameters, drilling technology and operating technology, a suit of technical measures for raising the drilling efficiency is obtained. The driller-month efficiency has risen by more than 80% in the construction of gas drainage boreholes in interbedded formation of soft and hard rock in research area.