应用意义随着矿山井下开采深度的不断加大及坑道钻探技术装备的发展,在坑道内施工的钻孔越来越多.由于坑道钻孔比地表钻孔更能任意地选择倾角,从而可减少钻探工作量,并获得较多而准确的地质资料.与地表钻进一样,坑道钻进同样存在着缩短辅助时间,提高钻探生产效率的问题. 当前,解决上述问题的有效办法之一,是实现不提钻取心.而目前国内能够运用的不提钻取心技术,只有正在推广的地表钻绳索取心钻进技术,以及刚研究试验成功的坑道内单层钻杆水力反循环取心技术,方法种类不够齐全.加上矿山 Application Significance With the continuous deepening of underground mining depth and the development of technical equipment for tunnel drilling, more and more holes are drilled in tunnels, which can be reduced by choosing pitching more freely than surface drilling Drilling work and get more accurate geological data.As with surface drilling, tunneling also has the problem of shortening the auxiliary time and increasing the productivity of drilling.At present, one of the effective ways to solve the above problems is to realize Attention is not being given to diamonds, but at present the only technology that can be applied domestically is drilling technology, which is being popularized, and the hydraulic reverse circulation coring technique , The type of method is not complete, plus the mine