Double-lever high-temperature, high-pressure and unsaturated consolidometer

Abstract

The invention discloses a double-lever high-temperature, high-pressure and unsaturated consolidometer, which comprises a pressure chamber, a suction control device, a temperature control box, a double-lever loading device and a deformation measuring device, wherein the pressure chamber is fixed in a temperature control box; the suction control device is arranged in the temperature control box, is connected with the pressure chamber and is used for controlling the suction of the pressure chamber; the temperature control box is arranged on a platform of the double-lever loading device for controlling temperature of the pressure chamber; the double-lever loading device is used for supporting the temperature control box and applying pressure to the pressure chamber in the temperature control box; and the top end of the deformation measuring device is fixedly arranged on the double-lever loading device, and the bottom end of the deformation measuring device is arranged on the pressure chamber for measuring displacement of a sample. In the consolidometer, the double-lever loading device, the suction control device and the temperature control box are adopted to realize the experimental study of volume change characteristic of the sample under high-pressure, full suction range and temperature control conditions.

Description

technical field [0001] The invention relates to the field of geotechnical engineering test research, and relates to a kind of geotechnical test equipment, in particular to a double-lever high-temperature, high-pressure unsaturated consolidation instrument. Background technique [0002] The unsaturated consolidation instrument is mainly used to study the volume change characteristics of unsaturated soil. The existing unsaturated consolidation instrument includes: bench, sample box, air pressure chamber, loading system, drainage system, deformation measurement system, pore pressure and load measurement system and other components. Among them, the sample box is composed of a base, a positioning ring, etc., and the sample is placed inside, and the high air intake value clay plate is placed under the sample, and a spiral groove is set at the bottom of the sample box. The lower part of the air pressure chamber is a cylindrical metal base for installing the sample box, and the upp...

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Problems solved by technology

For example, one of the current research hotspots is to simulate the consolidation characteristics of high-compacted bentonite, the buffer / backfill material in the deep geological repository of high-level radioactive waste, in the environment of the repository. High temperature, high pressure and high suction In case of experimental study of the consolidation characteristics, it is not possible to achieve

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