Tension-compression, ring shear and radial seepage tester and tension-compression, ring shear and radial seepage test system

Abstract

The invention provides a tension-compression, ring shear and radial seepage tester and a tension-compression, ring shear and radial seepage test system and relates to the technical field of mechanical test devices. The tension-compression, ring shear and radial seepage tester is characterized in that an axial piston rod is connected with an upper shear box, a torque transmission shaft is connected with a lower shear box, an axial force transducer is arranged on the axial piston rod, a torque transducer is arranged on the torque transmission shaft, a force transmission plate is fixedly connected onto the upper shear box and can transmit counter-force of applied torque, and stability of the upper shear box is maintained. A radial seepage test can be realized by arrangement of a seepage structure. The tension-compression, ring shear and radial seepage tester has the advantages that independent and coupling application of axial load and torque is realized, and stability of the tester and load application stationarity in a test loading process are guaranteed. The tension-compression, ring shear and radial seepage test system comprises a servo pump and the tension-compression, ring shear and radial seepage tester, and is precise in control, small in error and good in stability.

Description

technical field [0001] The invention relates to the technical field of mechanical test devices, in particular to a tension-compression ring shear radial seepage tester and a system thereof. Background technique [0002] The shear strength of rock is one of the important indicators to evaluate the mechanical properties of rock, and the accurate acquisition of strength parameters has important practical significance for rock mass engineering. At present, the shear strength of rock is mainly obtained through laboratory tests. The main test types include: conventional triaxial test, direct shear test and wedge shear test. [0003] Analyzing the existing test implementation methods, the force on the shear surface of the rock is not uniform during the shearing process, and the deformation is delayed, which cannot accurately reflect the shear strength of the rock. During the working process of the rock tension-compression ring shear tester, the process of applying the axial force ...

AI Technical Summary

Problems solved by technology

[0003] Analysis of the existing test implementation methods shows that the force on the shear surface of the rock is not uniform during the shear process, and the deformation is delayed, which cannot accurately reflect the shear strength of the rock

During the working process of the rock tension-compression ring shear tester, the process of applying axial force and torque will interfere with each other, resulting in a decrease in the accuracy and reliability of the force applied to the hollow rock sample, which has a large error in the acquisition of test results

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