Device for assembling rock samples in true triaxial test

Abstract

The invention discloses a device for assembling rock samples in a true triaxial test. The device comprises an annular framework, locking screw bolts, disc-shaped gaskets and supporting threaded rods. Two pairs of orthogonal threaded openings are arranged on the annular framework in the horizontal direction; a central axis of each pair of the orthogonal threaded openings penetrates through the center of the annular framework; the locking screw bolts are respectively screwed in the horizontal threaded openings of the annular framework; end parts of the locking screw bolts are in contact with the disc-shaped gaskets; and the other faces of the disc-shaped gaskets are directly in contact with bearing cushion blocks. The heads of the locking screw bolts are designed into a hemispherical shape, and a spherical hole with the same radius of curvature as that of the hemispherical shape is arranged at the center of one face of each of the disc-shaped gaskets. The contact faces of the locking screw bolts and the disc-shaped gaskets are spherical surfaces. Three non-penetrating threaded openings which form angles of 120 DEG mutually are arranged on the lower surface of the annular framework and are used for being screwed by the supporting threaded rods. Three non-penetrating circular holes which form angles of 120 DEG mutually are arranged on the upper surface of the annular framework. The device for assembling the rock samples in the true triaxial test has a simple structure, and is simple and convenient to operate, the difficulty in assembling a sample due to daubing of silica gel is eliminated, the misplacement of the rock samples is avoided, and a plurality of rock samples can be simultaneously dried in a drying oven conveniently.

Description

technical field [0001] The invention relates to the technical field of rock true triaxial testing, and more particularly relates to a device for assembling rock samples in true triaxial testing. The device can be used for assembling rock samples in the preparation stage of true triaxial testing. Background technique [0002] The rock true triaxial testing system (True triaxial testing system: TTS) can simulate the mechanical properties of rock under different triaxial stress conditions. Compared with the conventional triaxial test, the true triaxial test can better explain the mechanical behavior of the rock under the natural stress state. [0003] Most rock samples for true triaxial testing are cuboids (or cubes) with six ends and can be subjected to uniform loads of varying magnitudes in three orthogonal directions. According to the type of load, the true triaxial testing machine can be divided into rigid loading type, flexible loading type and mixed loading type. Among t...

AI Technical Summary

Problems solved by technology

However, since the upper and lower surfaces of the sealing device need to be coated with silica gel, the operation is very troublesome, and a slight operation error can cause the pressure pad and the sample to be misaligned, causing the loading center to deviate, which seriously distorts the test results

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