Soil sample compression consolidation and resistivity real-time imaging monitoring device and its soil fetcher

Abstract

The invention discloses a soil body sample compressing consolidation and resistivity real-time imaging monitoring device used for monitoring a pore water migration rule and a soil particle sedimentation rule in a soil body consolidation deformation process. The monitoring device comprises a soil body compressing consolidation device and a resistivity monitoring device, wherein the soil body compressing consolidation device comprises a water tank, an upper protective ring, a lower protective ring, a cutting ring with a screwed hole, a porous stone, a pressurization upper cover, a displacement meter guide rod and a displacement meter frame; the resistivity monitoring device comprises a centralized cable, an intelligent electrode conversion module, a resistivity collection control module, an apparent resistivity real-time imaging module and a power supply module; when the soil body compressing consolidation device compresses a soil body, the resistivity monitoring device monitors the migration rule of pore water in a soil body consolidation deformation process on the basis of a resistivity method to; and the resistivity monitoring device monitors the variation of resistivity in time and space in the soil body consolidation deformation process, monitors a migration path of the pore water, variation form and soil particle sedimentation rule.

Description

technical field [0001] The invention relates to a new type of geotechnical test equipment in the field of geotechnical engineering test research and engineering application, especially a real-time imaging monitoring device for compression consolidation and resistivity of soil samples and a soil fetcher, which uses the resistivity method to measure soil Monitoring the migration law of pore water during the consolidation and deformation process of solid body. Background technique [0002] The soil is composed of a skeleton made of soil particles and pores between the skeletons. Under the action of load in saturated soil, the pore water slowly seeps out, the effective stress state of the soil changes, and the soil volume gradually compresses, and the external load is transferred from the pore water to the soil skeleton accordingly, until the deformation reaches stability The whole process of soil deformation is consolidation. In this process, the migration law of pore water i...

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Problems solved by technology

In addition, in order to solve the problem of taking soil with the ultra-long ring knife (30cm) designed in the present invention, improve the problems of excessive internal friction, sample loss and poor sealing in the process of obtaining the undisturbed soil sample, and reduce the disturbance to the original state of the soil sample, To improve the success rate of the test and the reliability of the test results, the present invention also designs an improved soil fetcher

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