Device and method for measuring two-dimensional motion law of soil moisture in soft sandstone area

Abstract

The invention relates to a device and method for measuring the two-dimensional motion law of soil moisture in a sandstone area. The measuring device comprises a box body, a partition plate and a moisture sensor, a plurality of detection holes are formed in the side wall of the box body, and the moisture sensor detects the moisture content of a corresponding soil layer in the box body through the detection holes; the box body comprises a horizontal observation area and a vertical observation area which are arranged side by side, a plurality of pairs of opposite vertical clamping grooves and a plurality of pairs of opposite horizontal clamping grooves are formed in two opposite inner side walls of the box body, and the vertical clamping grooves are located in the vertical observation area; the horizontal clamping groove is located in the horizontal direction observation area. The partition plates are arranged in a pair of opposite vertical clamping grooves or horizontal clamping grooves in a pluggable mode. The measuring device disclosed by the invention is not limited by environmental factors such as terrains and the like, is beneficial to carrying out repeated tests, is high in detection precision and can be used for observing the movement rules of soil moisture in the vertical and horizontal directions.

Description

technical field [0001] The invention relates to the technical fields related to the two-dimensional movement law of soil moisture and hydraulic erosion monitoring, and in particular to a device and a method for measuring the two-dimensional movement law of soil moisture in the arsenic sandstone area. Background technique [0002] The infiltration process of water in the soil is a key link in the natural water cycle, and it is also the main process in which water is transformed into a form that can be absorbed and utilized by animals and plants in the soil system. The infiltration performance of soil is one of the basic properties of soil, and the movement mode of soil moisture has vertical one-dimensional direction and two-dimensional direction. At present, domestic devices and methods for measuring the two-dimensional movement of soil moisture are mostly used in areas such as loess, purple soil, and sandy land. There are relatively few studies on the arsenic sandstone area,...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no uniform domestic and international standard measuring device and method for the two-dimensional movement of soil moisture in the sandstone area. One of the existing measurement methods is the double-ring infiltration method or the single-ring infiltration method. It is easily restricted by the terrain, which is not conducive to the development of repeated experiments, and the measurement accuracy is low

The other is the indoor fixed water head method. Although the variable is controllable in this method, the movement law of soil moisture in the vertical and horizontal directions cannot be observed.

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