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由于云南地区的地质情况比较复杂,换层频繁,硬岩不多,所采用的钻孔结构和钻进工艺也与外地不同,为适应不同地层条件钻进时经常变换钻头的需要(比如采用普通合金、针状合金、人造金刚石钻头进行分层钻进)对钻机性能也提出特定要求,即不但要保持钻机原有的三个低转速,而且还要有2～3个高转速,以使人
Due to the complicated geological conditions in Yunnan Province, frequent layer changes and small amount of hard rock, the drilling structure and drilling technology adopted in the area are also different from those in the field. In order to adapt to different strata conditions, the drill often needs to be changed during drilling (for example, Alloy, needle-shaped alloy, synthetic diamond drill for stratified drilling) on the performance of the rig also made specific requirements that not only to maintain the rig of the original three low-speed, but also have 2 to 3 high-speed, so that people