Collaborative testing device and method for water and soil characteristics-resistivity of earth-rock mixture

Abstract

The invention discloses a collaborative testing device and method for the water and soil characteristics-resistivity of an earth-rock mixture. The device comprises an analytical balance used for weighing tested filter paper, a sample table which is located above the analytical balance and is used for placing an earth-rock mixture test piece, a lifting plate located between the analytical balance and the sample table, a lifting driving device used for driving the lifting plate, and a sealing cover used for sealing the whole device. A filter paper through hole is formed in the sample table, a filter paper fixing table is fixedly arranged in the middle of the lifting plate, and the lifting driving device enables the filter paper fixed to the filter paper fixing table to be tightly attached toa bottom face of the earth-rock mixture test piece or enables the lifting plate to be placed on the analytical balance by lifting the lifting plate; the weight change of the experimental filter papercan be detected in a closed environment, the test efficiency is improved, and meanwhile, the high test precision is ensured.

Description

technical field [0001] The invention relates to a soil-rock water and soil characteristic testing device, in particular to a collaborative testing device and method for soil-rock mixture water and soil characteristics-resistivity. Background technique [0002] Unsaturated soil is a kind of three-phase soil. Unlike saturated soil, there are not only solid phase and liquid phase, but also gas phase in unsaturated soil. The existence of the gas phase greatly complicates the properties of the soil. Its basic characteristics are different from those of the saturated soil, especially the soil-water characteristics. The soil-water characteristics are the relationship between the moisture content of the unsaturated soil and its matrix suction. The water content of the used soil test piece can be calculated by the total mass of the test piece, and the matrix suction is converted by measuring the mass of the filter paper attached to the test piece after absorbing water in a closed env...

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Problems solved by technology

The existence of the gas phase greatly complicates the properties of the soil. Its basic characteristics are different from those of the saturated soil, especially the soil-water characteristics. The soil-water characteristics are the relationship between the moisture content of the unsaturated soil and its matrix suction. The water content of the used soil test piece can be calculated by the total mass of the test piece, and the matrix suction is converted by measuring the mass of the filter paper attached to the test piece after absorbing water in a closed environment. In the prior art, mature soil The water characteristic filter paper method is to manually take out the filter paper and put it on the balance for measurement, resulting in that the resistivity of the specimen and the water absorption of the filter paper cannot be measured in time, which affects the efficiency of the experiment, or the filter paper is weighed too early, resulting in damage to the sealed environment. In addition, weighing the resistivity of the filter paper and the test piece when exposed to the atmosphere will easily cause moisture volatilization of the test piece and filter paper, reducing the accuracy of the experiment

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