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金刚石钻具在硬脆碎地层中钻进，在岩矿心采取问题上有时是一个难题。特别是在较薄的破碎带和结构完整的岩层相互频繁存在的情况下，问题就显得更为突出。单纯使用岩心卡簧卡取岩矿心时，如果卡簧处正好是一截完整岩心，那么可以连同破碎岩心一起卡取上来。而有时卡簧处恰好是一般破碎岩块，则卡簧就无法将其卡住。过去由于这个问题我们没有很好地予以解决，我队在勘探某银金矿过程中曾报废了相当的工作量，给探矿生产造成了一定损失。鉴于上述情况，经反复研究和试验，在现有金刚石钻头的卡心
Diamond drilling in hard and brittle ground drilling, rock core mining problems is sometimes a problem. The problem becomes even more pronounced, especially when thinner fractured zones and well-structured rock formations are frequent. When simply using a rock bolt to grab a rock core, if the retainer is exactly a complete core, it can be taken in with the rock core. And sometimes at the snap spring is exactly the general broken rock, then the retainer will not be stuck. In the past, due to this problem, we did not solve the problem very well. During the exploration of a silver and gold mine, our team had scrapped a considerable amount of work and caused some losses to the prospecting and production. In view of the above situation, after repeated research and testing, the existing diamond core bit