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介绍了冻土钻进实验室试验条件 ,讨论了室内钻进冻土样品时岩心采取率、钻进效果、岩心原始结构、孔壁解冻与钻进条件的关系 ,研究了钻进规程参数对孔壁状态的影响
This paper introduces the experimental conditions of permafrost drilling in laboratory and discusses the relationship between the rate of core recovery, the drilling effect, the original structure of core, the thawing of the hole wall and the drilling conditions during the drilling of permafrost samples. Effect of wall condition