Integrated testing device for tension, compression, shearing and torsion of rock mass

Abstract

The invention provides an integrated testing device for tension, compression, shearing and torsion of a rock mass. The device comprises a device base, three groups of loading systems and a plurality of loading ends, wherein the loading systems comprise a transverse loading system, a longitudinal loading system and a vertical loading system; the transverse loading system comprises two transverse load supporting structures, two load sensors, a transverse load force transmission structure and two hydraulic jacks; the longitudinal loading system comprises two longitudinal load supporting structures, two load sensors, a longitudinal load force transmission structure and two hydraulic jacks; the vertical loading system comprises an upper load supporting beam, four pull rods, two load sensors anda vertical load force transmission structure; and the loading systems and the loading ends are connected through trapezoid prefabricated connectors. According to the device disclosed by the invention, a compression test, a tensile test, a tension-compression combined test and the like can be carried out on the rock mass, and the strength and the stress strain relation under the complex stress action of the rock mass can be accurately measured.

Description

technical field

[0001] The invention relates to the field of rock mechanics, in particular to a test device capable of simultaneously realizing rock mass stretching, compression, shearing and torsion. Background technique

[0002] The stress state of rock mass is very complicated in practical engineering. In deep rock underground caverns and rock slope engineering, except for the cavern and slope surface, other parts are generally in a three-dimensional stress state. With the excavation of the slope and the excavation of the cavern, the stress state of the rock mass in different spatial positions is also constantly changing. In actual engineering, it is an objective existence that the rock mass reflects the corresponding tensile stress and torque phenomenon. The research on the mechanical properties of rock mass is far from enough except the conventional uniaxial tension and compression test. Although conventional triaxial or true triaxial equipment widely used at present...

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