Rock and earth mass shear apparatus taking water-rock interaction into consideration

Abstract

The invention provides a rock and earth mass shear apparatus taking water-rock interaction into consideration. Porous plates are arranged in an upper shear box and in a lower shear box respectively. An inner cavity of the upper shear box is divided into an action cavity and a shear cavity by the corresponding porous plate, and an inner cavity of the lower shear box is divided into an action cavity and a shear cavity by the corresponding porous plate. The action cavities are closed cavities and close to the bottoms of the boxes, the shear cavities are open cavities and close to the openings of the boxes. A dry-wet circulation system comprises a water tank, a water pump, a water inlet pipe, a backflow pipe, a flow meter, a water inlet valve, a pressure adjusting valve and two sets of electric heating wires with insulating sleeves. The water inlet pipe is communicated with the action cavity of the upper shear box, the backflow pipe is communicated with the action cavity of the lower shear box, the water inlet pipe, the upper shear box, the lower shear box, the backflow pipe and the water tank form a water circulation loop, and the two sets of electric heating wires with the insulating sleeves are installed in the action cavity of the upper shear box and the action cavity of the lower shear box respectively. The upper shear box and the lower shear box are transformed, early stage treatment is conducted on an installed rock sample under different conditions, interference caused by repeatedly detachment of the rock sample is avoided, and influence factor analysis is conveniently carried out on the rock sample in the testing process.

Description

technical field [0001] The invention relates to a rock and soil body shearing instrument, in particular to a rock and soil body shear strength measuring instrument considering water as an influencing factor, and belongs to the technical field of rock and soil engineering. Background technique [0002] The direct shear test is one of the conventional mechanical tests to study the strength characteristics of rock and soil. It is an important means to study the shear characteristics and deformation laws of rock and soil. It is an important basis for the design and construction of common geological engineering constructions such as reservoirs and reservoirs. [0003] Rock and soil mechanics tests are mainly divided into indoor tests and outdoor tests. Indoor tests are simple and easy to record and process data, so they are widely used. However, because the test conditions are too ideal, they cannot fully reflect the actual geological environment of the rock mass, and often have...

AI Technical Summary

Problems solved by technology

However, because the test conditions are too ideal, they cannot fully reflect the actual geological environment of the rock mass, and often have a gap with the actual mechanical parameters of the rock mass.

However, outdoor field tests often have unfavorable factors such as huge cost and difficult operation.

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