覆压孔隙度测量仪测量孔隙度的不确定度评定

Evaluation of uncertainty in measuring porosity by overburden porosity permeability measuring instrument

介绍了覆压孔隙度测量仪测量岩石孔隙度的方法和原理,对测量过程中的误差源进行了分析,给出了直接测量分量的A类和B类不确定度的计算公式,计算了合成不确定度和扩展不确定度。针对岩石样品的孔隙度测量实例进行了不确定度分析,给出孔隙度测量和不确定度分析结果。为孔隙度检测的可靠性提供了保证,使得不同实验室的测量数据具有可比性。

This paper introduces the method and principle of measuring rock porosity with overburden porosity permeability meter,analyses the error sources in the measurement process,gives the calculating formulas of class A and B uncertainties of direct measurement components,calculates the synthetic and extended uncertainties.This paper analyses the uncertainty of rock sample porosity measurement,and gives quantity and uncertainty analysis results of the porosity measurement.It guarantees the reliability of porosity measurement and makes the measurement data of different laboratories comparable.