An experimental device for testing rock disturbance-relaxation effect

Abstract

The invention discloses an experimental device for testing disturbance-relaxation effect of rocks. The device comprises a control shell, wherein a first partition plate is fixed to the top surface ofthe control shell; fixed plates are separately fixed to two sides of the first partition plate, and a loading assembly and an uploading assembly are successively arranged between the two fixed platesup and down, a chute is formed in the inner side of each fixed plate; a second induction plate is fixed to the inner side of each fixed plate, and a second stroke switch is fixed to the second induction plate; a first stroke switch is arranged on a fourth loading plate, and when a third loading plate descends to a preset position, the third loading plate triggers the first stroke switch, so that alifting motor stops rotating. The device can achieve tri-axis pressurization and confining pressure application to a test sample, so that the shear strength and the compressive strength of the test sample can be tested and the confining pressure environment of the rocks can be simulated. The device can apply disturbance through a weight, and can calculate the disturbance force applied according to the rotating angle of a rotating disc, so that the experimental researches are facilitated well.

Description

technical field [0001] The invention relates to an experimental device, in particular to an experimental device for testing rock disturbance-relaxation effect. Background technique [0002] In the fields of civil engineering and mining, it is very necessary to study the mechanical properties of rocks, which can help designers to carry out engineering design, thereby ensuring construction progress, reducing construction costs, and eliminating potential safety hazards. [0003] At present, the research on the mechanical properties of rocks mainly focuses on: tensile strength, compressive strength, confining pressure, elasticity, elastic aftereffect, disturbance, relaxation, etc., which can reflect the mechanical properties of rocks from various aspects. So as to provide effective reference or research for designers. [0004] There are related testing devices in the prior art, such as a rock disturbance generating mechanism and its relaxation-disturbance comprehensive experime...

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Problems solved by technology

[0004] There are related testing devices in the prior art, such as a rock disturbance generating mechanism and its relaxation-disturbance comprehensive experimental device recorded in the Chinese invention patent application with the publication number CN107221236A. However, when this device is actually used, it can The perturbation force performed is relatively small, which cannot meet the requirements in the perturbation experiment that requires a large force

Moreover, it uses instantaneous impact for disturbance, which cannot meet the needs of experiments that require a long disturbance time.

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