Rock joint direct shear test system suitable for CT three-dimensional real-time scanning

Abstract

The invention relates to a rock joint direct shear test system suitable for CT three-dimensional real-time scanning. The system includes a host frame, an upper shear box, a lower shear box, a rotating device and a CT scanner; a rock joint test piece is placed between the upper shear box and the lower shear box, the upper part of the upper shear box is connected to a rotary gasket, and the rotary gasket is connected to an action end of a normal loading device applying normal pressure to the rock joint test piece; the lower shear box is placed on a rotary bracket, a transverse loading device for applying transverse shear force to the rock joint test piece is fixed the rotary bracket, an action end of the transverse loading device abuts against the side of the lower shear box, and the rotary bracket is in connection with the action end of the rotating device; the rotary bracket, the upper shear box, the lower shear box and the rotary gasket are arranged coaxially; and the CT scanner includes a radioactive source and a detector disposed on two opposite sides of the shear box. The rock joint direct shear test system suitable for CT three-dimensional real-time scanning provided by the invention has good stability and realizes three-dimensional imaging.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and relates to a rock shear test system, in particular to a rock joint direct shear test system suitable for CT three-dimensional real-time scanning. Background technique [0002] Understanding the shear properties of rock joints is of great significance in water conservancy and hydropower development, mining of mineral resources, underground transportation, railway construction, nuclear waste storage, and many other fields involving geotechnical engineering. The shear failure of rock joints is usually caused by the initiation, development and final interconnection of micro-cracks near the joint surface to form macro-cracks. Therefore, the study of the expansion and evolution of micro-cracks is of great significance for understanding the shear failure mechanism of rock joints. CT scanning technology can obtain high-precision scanning images inside the test piece during the test, so as to ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing rock joint direct shear test system that cannot be three-dimensionally imaged and have poor stability, the present invention provides a rock joint direct shear test system that has good stability and realizes three-dimensional imaging and is suitable for CT three-dimensional real-time scanning

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