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对比同一煤矿区的硬岩层钻进结果看出,S75绳索取心冲击回转钻具的时效是一般绳索取心钻具的1.8倍,有效地解决了金刚石钻头“打滑”问题。
Comparing the drilling results of hard rock formations in the same coal mining area, it shows that the aging of S75 rope coring rotary drilling tool is 1.8 times that of a common rope coring drilling tool, which effectively solves the problem of “slipping” of diamond drill bit.