在掌握JJF1059-1999的基础上,对钻井液搬土含量的不确定度进行评定,主要从方法概述、确定测量中不确定度的来源、建立数学模型、计算相对标准不确定度分量、合成相对标准不确定度、扩展不确定度等入手,详细介绍了不确定度评定过程。结果表明:当搬土含量为42.75g/L时,扩展不确定度为1.5g/L(k=2)。 On the basis of grasping JJF1059-1999, the uncertainty of soil content in drilling fluid is evaluated, mainly from the method overview, the sources of uncertainty in measurement, the establishment of mathematical model, the calculation of relative standard uncertainty components, Standard uncertainty, expansion of uncertainty to start with details of the uncertainty of the assessment process. The results show that the expansion uncertainty is 1.5g / L (k = 2) when the soil content is 42.75g / L.