探矿工程-岩土钻掘工程Issue(11)：1-4,4.
小秦岭复杂地层潜孔锤反循环钻探技术试验研究
Experimental Research on Reverse Circulation Drilling Technology with DTH Air Hammer Drill Bits in Complex Strata in Xiaoqinling Area
摘要
Abstract
The technology of reverse circulation continuous coring drilling with hollow-through DTH hammer has shown lots of peculiarities, such as the high drilling efficiency, good quality of borehole and low drilling cost, especially the unique a-daptability while drilling in complex strata.In this paper, series of field tests have been conducted on the basis of optimized configuration of reverse circulation drill bits and drilling tools according to Tiancheng gold mine drilling project in Xiaoqin-ling area.The tests results have shown that the modified drilling system with hollow-through DTH hammer could be of high adaptability to drilling in complex conditions, which could effectively solve the problems of drilling in this ore district. What’ s more, the results contribute to the further innovative research on the mechanism theory of hollow-through DTH hammer and the structural design of reverse circulation drilling bits.In addition, it could provide technical supports for the reasonable optimization of hollow-through DTH hammer and drilling tools configuration to achieve the high efficiency, low cost, short period and superior drilling effect in complex geological conditions.关键词
贯通式潜孔锤/反循环连续取心/复杂地层/小秦岭Key words
hollow-through DTH hammer/reverse circulation continuous coring/complex strata/Xiaoqinling分类
天文与地球科学引用本文复制引用
田敏,赵志强,曾石友,殷其雷,李金朋,杨宽才..小秦岭复杂地层潜孔锤反循环钻探技术试验研究[J].探矿工程-岩土钻掘工程,2013,(11):1-4,4.基金项目
中国地质调查局地质大调查工作项目“多工艺空气潜孔锤反循环钻探技术研究” （）
