冻土钻进的实验室试验研究——冻土钻探专题之二

摘要:

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

Abstract:

The paper introduces testing conditions of the permafrost drilling in lab, and discusses the relations of drilling conditions with the core recovery, drilling results, original structures of cores, defrosting of hole wall. The in fluences of drilling practice parameters on the hole wall states were studied