深海海底的浅层沉积物不排水抗剪强度低、饱和松散且易受扰动。由于海洋的复杂环境，常规取样对原位土体扰动较大，文章主要介绍了静力触探试验、动力触探、扁铲侧胀仪试验、十字板剪切试验和海上抽水试验等海洋原位试验的原理、优点、适用范围、设备以及相关应用情况。明确了我国海洋原位试验的发展方向。%The saturated and unconsolidated abyssal sediment has low shearing strength and pecu-liarity of perturbable.In the face of complex environment of ocean and turbulence to seabed soil by conventional sampling techniques,the principle,advantages,scope of application,equipment and the applications of several marine in-situ testing were described,including offshore CPT,dy-namic cone penetration,flate dilatometer testing,offshore in-situ vane shear test and offshore pumping test.
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