在勘察壩址工程地质时,当进行了地面调查工作後,为了能更进一步地了解地下地质的情况,往往还须进行壩址勘探工作。勘探工作中,包括钻探、井探、硐探等山地工作。其中岩心钻探是最常用的一种勘探工作方法,它的优点是能取出离地面深处的岩石,而且在这些钻孔中,能作各种必要的试验工作,如抽水、压水、注水等。所以岩心钻探 When surveying the engineering geology of the dam site, after conducting the ground survey work, it is often necessary to carry out the exploration of the dam site in order to get a better understanding of the underground geological conditions. Exploration work, including drilling, well exploration, exploration and other mountain work. Among them, core drilling is the most commonly used method of exploration, which has the advantage of being able to remove rock from the depths of the ground and can perform all necessary tests in such boreholes, such as pumping, water pressure, water injection, etc. . So core drilling