Soil sample dry and wet circulating test instrument

Abstract

The invention provides a soil sample dry and wet circulating test instrument. The test instrument at least comprises a bracket, and a lifting mechanism, a saturated component and a constant-temperature evaporating component, which are fixed to the bracket, wherein the constant-temperature evaporating component is positioned above the saturated component; a soil sample turning mechanism is arranged in the saturated component; the lifting mechanism is used for driving a pedestal to move up and down along the vertical direction; the soil sample turning mechanism comprises the pedestal, two slide rails and more than two supporting plates; the slide rails are fixed to the pedestal; the supporting plates are arranged on the two slide rails; the pedestal is a rectangular square frame; the shape of the two slide rails is the same; each of the two slide rails is shaped like a wavy line; the two ends of the slide rails are respectively arranged on two short sides of the pedestal; a slide block is arranged at each of the two ends of each supporting plate; the supporting plates are arranged on the slide rails through the slide blocks and can slide along the slide rails. According to the soil sample dry and wet circulating test instrument provided by the invention, a soil sample can be turned by the soil sample turning mechanism, so that the soil sample is guaranteed to be more uniform and full in dryness and saturation; the test instrument can treat a plurality of soil samples at one time, the consumed time is little, and the efficiency is high.

Description

technical field [0001] The invention relates to a soil sample dry-wet cycle tester, which belongs to the field of dynamic balance test of geological engineering rock soil properties. Background technique [0002] In the natural environment, under the action of physical, chemical and biological factors such as long-term rainfall and evaporation cycles, the mechanical properties of rock and soil materials are gradually weakened, resulting in cracks and even cracks. In order to study the changes in the mechanical properties of soil samples It is necessary to simulate the natural conditions and observe the changes in the physical and mechanical properties of the soil after repeated drying and wetting cycles. [0003] In order to study the reduction law of the strength parameters of the soil under the action of dry-wet cycles, it is necessary to carry out multiple dry-wet cycle operations on the samples. In the dry-wet cycle test of soil samples, the drying and saturation of the...

AI Technical Summary

Problems solved by technology

In the dry-wet cycle test of soil samples, the drying and saturation of the sample are two important links. The saturation link is easy to realize, but the dehumidification link of the sample takes a long time and there are many interference factors. How to make the sample dehumidify evenly? Wet, a problem in the test

[0004] Chinese patent (Application No.: 201210542086.1) "dry-wet cycle test instrument for geotechnical specimen under load" discloses a dry-wet cycle test instrument, which includes a test bench, a geotechnical test bench arranged on the test bench The three-lobe mold for the specimen, the loading device for applying vertical pressure to the specimen in the three-lobe mold for the geotechnical specimen, and the heating device for heating the specimen in the three-lobe mold for the geotechnical specimen, through the loading device, the water tank and the heating device, Realize the simulation of the dry-wet cycle change of the soil under the loaded state, and conduct experimental research on the strength attenuation law of the geotechnical specimen. The shortcoming of this device is that the instrument requires the specimen to be in a three-lobe mold, and the height of the specimen is large. It cannot be adjusted, so that the evaporation of the sample is uneven, and the temperature of the heating system cannot be adjusted. This equipment cannot solve the problem of testing multiple samples at one time; Chinese patent (application number: 201410610585.9) "An automated dry-wet cycle test "Instrument" discloses an automatic rock sample dry-wet cycle test instrument, which includes a heating and air-drying mechanism, a dry-wet cycle mechanism and a lifting mechanism, which can realize automatic drying and saturation of rock samples, but the rock samples are dry and saturated during the drying and saturation process. Cannot be turned over so it takes a long time to fully dry and saturate

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