压力式地下水水位计广泛应用于地下水监测工程中,现场使用的压力式地下水水位计监测数据需要定期与人工观测数据进行比对,判定比测结果的示值误差是否合格并应考虑不确定度的影响.介绍压力式地下水水位计现场比测方法,建立压力式地下水水位计现场比测示值误差的数学模型,分析现场比测过程中影响比测结果不确定度的因素,评定现场比测结果的扩展不确定度.结果表明:进行符合性判定时,在 0～65 m 埋深范围内比测结果不确定度可忽略不计,在 65 m 以上埋深范围内比测结果的不确定度不可忽略.研究结果可为开展压力式地下水水位计现场比测活动提供参考和依据.
Uncertainty analysis of field comparison test results of pressure type groundwater level meters
Pressure type groundwater level meters are widely used in groundwater monitoring projects.It is necessary to regularly compare field use of pressure type groundwater level meters with manual monitoring data to determine whether the indication error of comparison test results is qualified,considering the impact of uncertainty.This paper introduces the field comparison method for pressure type groundwater level meters,establishes a mathematical model for indicating error of field comparison tests for pressure type groundwater level meters,analyzes factors affecting the uncertainty of comparison test results in the field,and assesses the extended uncertainty of field comparison test results.The research findings indicate that when making conformity judgments,the uncertainty of comparison test results within the 0 to 65 meters range can be considered negligible,the uncertainty of comparison test results within the more than 65 meters range can not be neglected,providing reference and basis for conducting field comparison tests of pressure type groundwater level meters.
groundwaterpressure type groundwater level meteruncertaintyfield comparison test
万方数据
维普
