Factors that influence the selection of compressive samples for core-drilling test of piling foundations are introduced and analyzed and methods to select the samples are provided in the paper.

介绍桩基础钻芯检测法抗压芯样选取方法的影响因素，并对各个因素进行分析，提出桩基础钻芯检测法抗压芯样的具体选取方法。

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Through compaction hardness and analog shear rock failure test to drilling core, the paper discusses the possibility of discriminating downhole rock type by using rock acoustic emission frequency.

通过对钻井取心岩样压入硬度及模拟剪切的破岩试验，探寻利用岩石的声发射频率来判别井下岩石类型的可能性。

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This research was done on the tensile behavior of high performance cement-mortar to concrete through core-drilling and pull-stripping test.

研究了高性能水泥复合砂浆与混凝土之间的粘结性能。

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