Experimental device for measuring soil performance under evaporation condition

Abstract

The invention discloses an experimental device for measuring a soil performance under an evaporation condition. The experimental device comprises an upper frame, a lower frame, an earth-pillar barrel, an upper computer, a wind speed sensor, an air pressure sensor, a humidity sensor, a temperature sensor, a total radiation sensor and a fluorescent lamp arranged in the upper frame, and a power module for providing electric energy, wherein the upper frame is located on the upper part of the lower frame; a fan is arranged at the side face of the upper frame; soil is filled in the earth-pillar barrel; the upper end of the soil stretches out of the earth-pillar barrel; the lower end of the earth-pillar barrel is fixed into the lower frame; the upper end of the earth-pillar barrel penetrates through the lower frame and then is inserted into the upper frame. The device can reduce the influence of external disturbance factors on a test result.

Description

technical field [0001] The invention relates to an experimental device for measuring soil properties, in particular to an experimental device for measuring soil properties under evaporation conditions. Background technique [0002] Evaporation and infiltration of soil water is the most common way of water cycle in nature, but the continuous evaporation and infiltration of water in the soil will have an impact on the structure and strength of the soil. In geotechnical engineering, soil is the most common construction The structural characteristics and strength of materials are related to the stability and safety of buildings, especially in saline soils in some areas. Under evaporation conditions, the migration of water will drive the migration of salt and cause serious damage to the structural strength of the soil. Therefore In order to study and prevent the damage to the soil structure and strength caused by evaporation caused by water and salt migration in the natural envir...

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Problems solved by technology

[0003] At present, such devices used in geotechnical tests are similar. The main method is to place the test soil column in a closed environment box. The environment box has infrared lights and fans that simulate the natural environment, and a moisture sensor is inserted on the soil column to monitor changes in moisture and salinity. Or measure the water and salt content of each section by cutting the soil column in sections. These devices have the following disadvantages: the existing devices are tested in a closed environment chamber, and the soil is all exposed to the outside world. External interference factors have a greater impact on the experimental results, so Cannot accurately measure soil evaporation and water-salt migration

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