Triaxial test machine and testing system

Abstract

The invention relates to a triaxial testing machine and a testing system. The triaxial testing machine comprises a loading frame, a specimen box, a base, six actuators, a lifting oil cylinder and a locking oil cylinder, wherein the axes of the six actuators intersect at a point O. The actuators are used to provide six loads perpendicular to the six surfaces of a test piece to the test piece in a test piece box, so that three directions perpendicular to the surfaces of the test piece have independent load / unload capability; the test piece box is used to install and position the test piece, so that the geometric center 0'' of the test piece coincides with the geometric center 0' of the test piece box, and the geometric center O' of the test piece box coincides with the point O, and any faceof the test piece is perpendicular to the axis of any actuator. The triaxial testing machine and the testing system can conveniently and quickly complete the centering process of the test piece, the three-direction six-surface loading of the test piece can be performed, true triaxial tests can be completed, and in the three-direction six-surface loading process, one-direction sudden unloading canalso be achieved to complete rock burst tests.

Description

technical field [0001] The invention relates to the technical field of testing rock mechanical properties, in particular to a triaxial testing machine and a testing system. Background technique [0002] In recent years, the scale of national infrastructure construction has become larger and larger, and the geological problems encountered in the process of infrastructure construction have become more and more complex, and the geotechnical problems involved have become more and more diversified, which forces us to further improve and development of testing techniques for geotechnical engineering. Through scientific tests to identify various performance indicators of rocks, to achieve reasonable selection, use and excavation of rocks, and to gain a deeper understanding of the mechanical characteristics of rock media in complex environments, so as to ensure the safety, economy and rationality of construction projects. [0003] With the continuous development of testing technolo...

AI Technical Summary

Problems solved by technology

[0006] When using a triaxial testing machine to perform a triaxial test or a true triaxial test or a rockburst test on a specimen, whether the specimen is centered with the loads in each direction has a great influence on the test results, so when using the triaxial When the testing machine tests the test piece, it is necessary to align the test piece with the loads in all directions as much as possible; however, in the triaxial testing machine in the prior art, the installation process of the test piece is complicated, and the centering process of the test piece is cumbersome. The centering effect is poor, which leads to a large difference between the measured triaxial mechanical properties of the test piece and the actual situation. Especially in the rockburst test, the loading test method is usually used, which is different from the rockburst. The stress path is not completely consistent, which makes the simulated rockburst phenomenon inconsistent with the actual situation

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