Shear and seepage flow coupling rheological test instrument with tension and compression rings for rock

Abstract

The invention belongs to the technical field of mechanical test devices for rock, and discloses a shear and seepage flow coupling rheological test instrument with tension and compression rings for rock. The shear and seepage flow coupling rheological test instrument comprises a base, an upper shear box, a lower shear box, a first frame, a second frame, an axial loading system, a torque loading system, pressure control structures and deformation detecting structures. The first frame is fixed onto the base, and the second frame is fixed onto the first frame; the lower shear box is fixed onto the base; the upper shear box and the lower shear box are opposite to each other, and annular upper test specimen grooves and annular lower test specimen grooves are respectively formed in the upper shear box and the lower shear box; the torque loading system is connected with an output end of the axial loading system; the pressure control structures are respectively connected with the axial loading system and the torque loading system, and feedback control can be carried out on applied axial force and torque by the pressure control structures; the deformation detecting structures are arranged in the shear boxes and are used for detecting deformation of rock test specimens. The shear and seepage flow coupling rheological test instrument with the tension and compression rings for the rock has the advantage of multiple stress paths.

Description

technical field [0001] The invention relates to the technical field of rock mechanics test devices, in particular to a rock tension-compression ring shear-seepage coupled rheology tester. Background technique [0002] The mechanical form of rock mass not only exhibits elasticity and plasticity, but also has time-dependent properties, that is, the rheology of rock mass. Under the influence of external force and engineering environment, rock materials and rock mass structures mostly present time-dependent mechanical behaviors. At the same time, changes in the stress field, seepage field or temperature field and their interactions may change the rheological deformation path of the rock mass. , accelerated deformation and bifurcation or change from static process to dynamic motion, resulting in geotechnical engineering disasters. [0003] At present, indoor rock rheological tests mainly involve bending test, torsion test, uniaxial compression test, triaxial compression test, sh...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a rock tension-compression ring shear-seepage coupled rheological test instrument, which solves the problem of single force in the rock rheological test in the prior art, one-sided rheological characteristics, and cannot truly reflect the rheological characteristics under the comprehensive force state, and the data is reliable. Technical problems with sex and precision

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