Ring shear apparatus testing system for land-rock contact face

Abstract

The invention provides a ring shear apparatus testing system for a land-rock contact face. The ring shear apparatus testing system comprises a rock-soil sample preparation instrument and ring shear apparatus. The rock-soil sample preparation instrument comprises a first base, a first frame, an upper shear box and a lower shear box. The first frame is fixed on the first base, and the middle portionof the first frame is provided with a sliding arm of force. The sliding arm of force is provided with a lock block, and the bottom portion of the lower shear box is removably fixed on the first baseand the upper shear box is located on the lower shear box. The ring shear apparatus comprises a second base, a second frame and rotary platform. The second frame is fixed on the second base which connected with the rotary platform in a rotary mode. The upper portion of the second frame is provided with an oil pressure chamber which is connected with a telescopic upright post. The telescopic upright post is connected with a transmission compression ring plate which is provided with a pressure sensor. The rotary platform is removably connected with the lower shear box, and the upper shear box isprovided with a pore-water pressure sensor. The ring shear apparatus testing system has the beneficial effect that progressive failure behavior of a soil sliding body along a structural plane in a rock sliding bed can be simulated.

Description

technical field [0001] The invention relates to the field of rock and soil ring shear test instruments, in particular to a ring shear test system suitable for soil-rock contact surfaces. Background technique [0002] Ring shear instrument is a kind of geotechnical test equipment mainly used to study the mechanical properties of soil under the condition of large shear displacement. It has outstanding advantages and has important academic significance for the analysis of slope stability, the study of the mechanical mechanism of geological disasters and the progressive failure process of slopes. With the continuous improvement of the level of science and technology and the continuous maturity of the processing technology of geotechnical test equipment, the manufacture of ring shear instruments tends to be large-scale and automated, and the accuracy and functions of ring shear instruments have been significantly improved. Among them, the large-scale high-speed and high-pressure...

AI Technical Summary

Problems solved by technology

For samples that are sheared using a ring shear instrument, it is necessary to remove a part of the prepared disc-shaped soil sample with a ring knife to form a ring-shaped soil sample and put it into the ring shear instrument for testing. For rock samples, it is relatively Due to the limitations of conventional cutting techniques, it is impossible to cut rock samples, so conventional ring shear instruments cannot simulate rock and soil landslides, which makes the research of using existing ring shear instruments Slope types have certain limitations

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