Tension and compression ring shear circumferential seepage tester and system thereof

Abstract

The invention provides a tension and compression ring shear circumferential seepage tester and a system thereof, and relates to the technical field of mechanical test devices. The tension and compression ring shear circumferential seepage tester is connected with an upper shearing box through an axial piston rod, a torque force transmission shaft is connected with a lower shearing box, the axial piston rod is provided with an axial force sensor, the torque force transmission shaft is provided with a torque sensor, the upper shearing box is fixedly connected with a force transmission plate, and the force transmission plate can transmit counter force of applied torque to keep the stability of the upper shearing box. A circumferential seepage structure arranged in the invention can execute circumferential seepage test. The tension and compression ring shear circumferential seepage tester realizes independent and coupled application of the axial load and the torque, and guarantees the stability of a test device and the load applying stability in the test loading process. The tension and compression ring shear circumferential seepage system comprises a servo pump and the tension and compression ring shear circumferential seepage tester. The system has the advantages of accuracy in control, small error and good stability.

Description

technical field [0001] The invention relates to the technical field of mechanical test devices, in particular to a tension-compression ring-shear ring 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 an...

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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