Multifunctional high-temperature high-pressure rock true triaxial experiment system and method

Abstract

The invention relates to a multifunctional high-temperature high-pressure rock true triaxial experiment system and method, which belong to the technical field of rock experiment analysis. The system comprises a true triaxial pressure container, an axial pressure loading device, a confining pressure loading device, a pore pressure loading inlet and a pore pressure outlet; the upper section of the true triaxial pressure container is connected with the pore pressure loading inlet, and the lower end is connected with the pore pressure loading outlet; four external channels are arranged on the outer wall of the true triaxial pressure container and are symmetrically connected with the confining pressure loading system in pairs; the external channels are directly communicated with the confining pressure cavity of the true triaxial pressure container; by adopting the system and the method, gas-liquid single-phase seepage, gas displacement, adsorption and desorption, competitive adsorption andwater-gas two-phase seepage rules can be studied in a rock high-temperature true triaxial loading state, and the radial deformation and anisotropy of a rock sample in a first horizontal direction anda second horizontal direction can be measured at the same time; by coupling the work of each system, the complex geological environment where the rock is located is truly simulated in the experiment process, and the relevance, scientificity and accuracy of detection data are improved.

Description

technical field [0001] The invention relates to the technical field of rock experiment analysis, in particular to a multifunctional high-temperature and high-pressure rock true triaxial experiment system and method. Background technique [0002] As the mining depth of coal and other energy resources gradually extends to the deep, the rock mechanical properties of coal and other rock materials gradually show viscoelastic-plastic deformation under the control of high temperature and high pressure. research content. Rock materials under in-situ conditions, under the coupled effects of high temperature field, high stress field and seepage field, not only undergo changes in mechanical properties such as strength, deformation, and seepage, but also undergo gas adsorption-desorption, heat and mass transfer, etc. features. When studying the mechanical properties, heat and mass transfer characteristics of rocks under in-situ conditions in the laboratory, most of the corresponding e...

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Problems solved by technology

Most of the current rock testing machines cannot carry out such multifunctional systematic experiments at the same time

The experimental process is complicated, and the experimental results often do not match each other, making it difficult to compare and analyze the results and overall consideration

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