岩心采取率
yán xīn cái qǔ lǜ
- 名Core recovery rate;percentage of core recovery
岩心采取率-
浅谈提高工勘中岩心采取率的几点措施
A Brief Talk on Some Measures to Raise Core Recovery in Engineering Geological Exploration
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采用组合钻具进行跟管钻进，通过随钻跟入的套管保护孔壁，解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题。
The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing .
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根据岩心观察与描述，岩心采取率、岩石质量指标（R、Q、D）、岩石的块度指标、声波值及声波曲线、岩体回弹检测等方法确定岩体的完整性。
This paper affirms the completeness of rock mass by observing and describing the rock core , recovery ratio , R. Q. D.