Triaxial test rock sample stripper for rocks

Abstract

Disclosed is a triaxial test rock sample stripper for rocks. The triaxial test rock sample stripper is characterized in that a protection part comprises a base frame with two opening ends and a triaxial pressure chamber shelving layer arranged at the upper end of the base frame, and a top gasket is connected with the upper surface of the triaxial pressure chamber shelving layer through a support;a die pressing part comprises a die thread rod with one end penetrating the top gasket, a large rotary gear is meshed with a small rotary gear, the small rotary gear is sleeved in the upper end of thedie thread rod, a motor drives the large rotary gear to drive the small rotary gear to rotate, the small rotary gear rotates to drive the die thread rod to move vertically relate to the top gasket, and a force sensor controls the motor; a sample protection part comprises a rock-sample round die pipe, a circular grooved column, a pulley and a slide, and the slide is arranged in the base frame; a pulley track is arranged in the slide, upper and lower ends of rock-sample round die pipe, movably connected on the triaxial pressure chamber shelving layer are fixed in the round grooved column. The triaxial test rock sample stripper has the advantages that manual operation steps are reduced, and errors caused to the entire test process are avoided.

Description

technical field [0001] The invention belongs to the field of civil engineering mechanics test instruments, and relates to an automatically controlled triaxial test rock sample demoulding device. Background technique [0002] The rock triaxial test is a common test method to obtain rock mechanical parameters. In the triaxial test, it is generally necessary to place the rock sample in a triaxial pressure chamber, the diameter of the rock sample is consistent with the inner diameter of the pressure chamber, and then apply the confining pressure and axial pressure until the rock sample is destroyed. In the process of loading until failure, the rock sample will undergo lateral deformation and expansion. After the test, the rock sample and the side wall of the triaxial pressure chamber are closely attached together, and the rock sample cannot be pushed out of the triaxial pressure chamber directly. The current practice is to use manual demoulding, the demoulding device such as f...

AI Technical Summary

Problems solved by technology

In this process, the operation is cumbersome, and due to too many human factors, the rock sample after the test is likely to suffer secondary damage, and it is impossible to obtain accurate rock sample damage cracks. During the sampling process, the base frame of the stripper is not stable, which is easy to cause man-made damage

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