True triaxial experiment system for rock materials

Abstract

A true triaxial experiment system for rock materials comprises a loading frame and a triaxial clamp box, wherein an X-direction cart type loading device, a Y-direction separation type loading device and a Z-direction single-head type loading device, each loading device is equipped with a static loading cylinder and a disturbance loading cylinder, and bearing tables and static loading cylinders are arranged at an interval front and back, left and right and up and down respectively; the triaxial clamp box comprises a box body and a lower Z-direction loading rod, an upper Z-direction loading rod, two X-direction loading rods and two Y-direction loading rods, which are used for being contacted with six end surfaces of a cubic rock sample for loading respectively, and a sound emission sensor and a deformation sensor are mounted on each of the lower Z-direction loading rod, the upper Z-direction loading rod, the two X-direction loading rods and the two Y-direction loading rods. The true triaxial experiment system for the rock materials can realize independent static and different-source disturbance loading and unloading and has the advantages that a sample is convenient to mount, loading and bearing parameters are synchronized precisely, characterization parameters in a sample mutagenesis process are diversified and the like.

Description

technical field [0001] The invention relates to the technical field of mechanical testing, in particular to a true triaxial testing system for rock materials. Background technique [0002] With the rapid development of the national economy, industries such as mining, civil engineering, construction, and water conservancy are advancing rapidly. At the same time, they are also facing many challenges such as deep mining, large-scale slope treatment, deep tunnel excavation, and rock foundation stability of super high-rise buildings. Especially in the mining practice of deep high-stress hard rock ore bodies, there have been some unconventional disaster phenomena that seriously affect engineering construction and efficient resource recovery, such as rockburst, partition rupture, and slab cracking. Compared with the shallow part, the most notable feature of deep resource mining is that the underground rock mass is already in a high-stress environment before mining, and is subjected...

AI Technical Summary

Problems solved by technology

However, the existing rock true triaxial testing machine suffers from bulky rock triaxial fixtures, difficulty in online real-time monitoring of rock triaxial strain and fracture process, and difficult simultaneous loading and unloading of three-axis independent multi-stress paths and combined action of dynamic disturbance, and load can be applied. Not high, difficult to simulate the high stress state of deep rock mass, etc.

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