SOIL MEASUREMENT METHOD AND SOIL MEASUREMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a soil measurement method and a soil measurement apparatus capable of reducing the influence on the measurement of the dry density of soil by the proportion of moisture contained in soil while ensuring immediacy.;SOLUTION: A closed space 24 is formed on the soil E by a closed space forming step. A volume change is given to the closed space 24 formed in the closed space forming step by a volume change applying step. In a pressure fluctuation measuring step, the pressure fluctuation of the closed space 24 given the volume change in the volume change applying step by a dry density deriving step is measured. The dry density of the soil E is derived based on the pressure fluctuation of the closed space 24 measured in the pressure fluctuation measuring step by the drying density deriving step. The influence of the proportion of moisture contained in the soil E to the dry density of the soil E derived in the drying density deriving step is extremely small. This makes it possible to reduce the influence on the measurement of the dry density of the soil E by the proportion of moisture contained in the soil E while ensuring immediacy.;SELECTED DRAWING: Figure 3;COPYRIGHT: (C)2019,JPO&INPIT