体积压力板仪试验操作误差分析

Analysis on the Test Operation Error of Volume Pressure Plate Instrument

体积压力板仪不仅可用于测试非饱和土的脱湿曲线,还能测试其浸湿曲线,对研究土壤与水分之间的物理关系具有重要意义。本文对2bar体积压力板仪的试验操作原理和步骤进行了详细说明,重点对试验操作中可能产生的误差和各种影响因素进行了分析,并以武汉市汉阳黏土土-水特征曲线试验为例,分析了导致试验误差产生的各种影响因素,以为采用体积压力板仪测试土-水特征曲线提供参考依据。

2bar volume pressure plate instrument is used to test not only the unsaturated soil moisture curve,but also the soak curve,which has the important meaning to the study of the physical relationship between soil and water.This paper makes a detailed description of the test operation principles and processes of 2bar pressure plate instrument,stresses the analysis of possible errors and various influencing factors of test operation,and takes the soil-water characteristic curves of Hanyang clay in Wuhan City as the example to analyze the influencing factors causing test errors.This can provide the reference for using 2bar volume pressure plate instrument to test soil-water characteristic curves.