十字板剪切试验是在现场直接测定软土抗剪强度的一种有效方法,是求算地基承载力、围堤稳定、软黏土灵敏度及固结历史等地基力学参数不可缺少的原位测试手段.该文根据十字板剪切试验的原理,结合实际岩土工程勘察及现场试验,提出珠海横琴岛饱和软黏性土十字板剪切强度与深度之间的关系. Vane shear test is an effective method to directly measure the shear strength of soft soil in the field. It is an in-situ test method which is indispensable for calculating mechanical properties of foundation such as foundation bearing capacity, embankment stability, soft clay sensitivity and consolidation history According to the principle of cross - shear test and the actual geotechnical investigation and field test, the paper puts forward the relationship between the shear strength and the depth of saturated clayey soil of Hengqin Island in Zhuhai.