True triaxial rock seepage test loading device and test system

Abstract

The invention discloses a loading device and system for a true triaxial rock seepage test, which consists of a bottom plate, a base plate, a transverse loading plate that can move laterally under the drive of a transverse power device, and can be driven by a longitudinal power device and a transverse loading plate respectively. The longitudinal loading plate that moves longitudinally and laterally, and the follower plate that can move longitudinally under the drive of the longitudinal loading plate together form a chamber with an open top, and the chamber is closed by the vertical loading plate through the elastic sealing part to form a rock A sealed space suitable for the sample, and at least two of the bottom plate, base plate, longitudinal loading plate, transverse loading plate, follower plate and vertical loading plate are provided with water ports, which are respectively connected to the water inlet and the water inlet of the frequency conversion seepage loading device. drain end. The invention can accurately simulate mechanical properties such as the stress-strain relationship of the rock under the action of seepage in the real environment, and provide accurate experimental data, so that the follow-up can more accurately conduct more in-depth test verification on the problem of frequency-variable seepage-induced fault slippage.

Description

technical field [0001] The invention relates to the technical field of rock mechanics tests for geothermal mining, in particular to a loading device test system for a true triaxial rock seepage test based on geothermal mining. Background technique [0002] The energy structure built on the basis of fossil fuels has increasingly negative impacts on the environment on which human beings depend. In order to reduce the dependence on the energy structure built on the basis of fossil fuels. The development of renewable geothermal resources stored in the interior of the earth has gradually become popular. At present, the mining and utilization of geothermal resources in the world is mainly hydrothermal geothermal. Hot Dry Rock (HDR) is an extension of traditional hydrothermal geothermal. It is considered to be the most potential new energy source in the 21st century. [0003] At present, water injection into deep hot dry rock heat source formations for heat exchange has become a ...

AI Technical Summary

Problems solved by technology

Although the problem of loading boundary conditions has been solved, because the liquid providing the confining pressure is in direct contact with the sample, it is no longer possible to seepage the rock sample (because the seepage test requires the sample to be in a single seepage environment)

Therefore, the existing true triaxial test system cannot accurately simulate the mechanical properties of the rock under the action of seepage such as the stress-strain relationship in the real environment, making it difficult to conduct more in-depth test verification on the problem of frequency-variable seepage-induced fault slippage

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