True triaxial rock loading and unloading disturbance test device and using method thereof

Abstract

The invention discloses a true triaxial rock loading and unloading disturbance test device. The device comprises a vertical loading device and a horizontal loading device, which are orthogonally distributed, wherein the vertical loading device is hollow; load cylinders are arranged on, below, in the front of and at the rear of the vertical loading device; pressure transfer pillars are arranged at the left and right ends of the horizontal loading device and are driven by the load cylinders to achieve six-side stress loading simulation of a specimen. The device has the beneficial effects that an unloading rockburst experimental method for suddenly unloading the single-side stress of the rock specimen and a loading rockburst experimental method for increasing the vertical load after single-side sudden unloading are obtained on the basis of the true triaxial three-direction six-side stress state.

Description

technical field [0001] The invention relates to a rock mechanics experiment device, in particular to a true triaxial rock loading and unloading disturbance experiment device and a use method thereof. Background technique [0002] Due to its own weight and the influence of the earth's tectonic movement, the deep rock mass itself is a storage body of stress and energy. Before the disturbance of mining, it is already in a high stress state and stores a large amount of elastic energy. When the rock mass is excavated, the original equilibrium state is broken, causing the redistribution, transfer and release of the initial stress and energy. In actual deep engineering, with the excavation of the working face and roadway, the surrounding coal and rock mass often experience reciprocating loading and unloading. Disturbance is a cyclic disturbance loading and unloading carrier. This process not only leads to changes in rock strength, but also may cause rock bursts during rock loading ...

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Problems solved by technology

At the same time, it includes high temperature environment module, creep module, seepage module and related shear experiments, but there is no loading and unloading disturbance experiment device for deep rock mass

The existing experimental devices have the following deficiencies: 1. It is impossible to realize the unloading rockburst test of one-sided sudden unloading; 2. It is impossible to realize the loading rockburst test of increasing the vertical load after one-sided sudden unloading; 3. It is impossible to realize intermittent application of Shock load perturbation test for one or more shocks

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