Rock true triaxial test system with CT (Computed Tomography) real-time scanning system and method

Abstract

The invention relates to a rock true triaxial test system with a CT (Computed Tomography) real-time scanning system and a method. The rock true triaxial test system with the CT real-time scanning system comprises a triaxial pressure box, a triaxial host frame, a loading device and a CT scanning device, wherein the triaxial host frame comprises a bottom plate, a top plate and a stand column supported on the bottom plate; the loading device comprises a reversed force device, a jack and a measuring device; the pressure box, the stand column, and the reversed force device located in a scanning area of the CT scanning device are respectively made of carbon fiber materials. The rock true triaxial test system adopts the horizontal loading device, a carbon fiber force transfer plate and the stand column with special designs for a CT scanning area; solves the difficult problem that an X ray cannot penetrate through a traditional triaxial tester; overcomes the defect that in the traditional test, a rock sample needs to be unloaded and taken down from a true triaxial test bed and is then tested through CT scanning; realizes real-time coordination of rock true triaxial and CT scanning test; has significance on researching real-time extension and evolution law of microfissuring and microvoid in rocks under the triaxial stress state.

Description

technical field [0001] The invention belongs to the field of rock mechanics and rock testing, in particular to a rock true triaxial testing system and method with a CT real-time scanning system. Background technique [0002] The true triaxial tester can simulate the real three-dimensional stress state of the engineering rock mass, analyze the strength and deformation characteristics of the rock under three different principal stress conditions, and can perform independent tests on each surface of the rock sample according to certain changes during the true triaxial test. The principle stress is applied accurately, and the corresponding principal strain is measured to realize various complex stress loading paths, so as to reveal the deformation and failure characteristics of rock more systematically, comprehensively and deeply. [0003] The failure of rock mass is usually caused by the initiation, development and final interconnection of micro-cracks and micro-cavities in the...

AI Technical Summary

Problems solved by technology

[0011] Although the experimental systems involved in the above two patents can realize CT real-time scanning of rock sample loading, they mainly involve conventional triaxial (false triaxial) test devices. The fundamental disadvantage of conventional triaxial test devices is that they can only The strength and deformation law of the rock sample under the axisymmetric stress state () cannot represent the general stress state actually received by the rock (that is, the true triaxial,)

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