Rock disturbance generating mechanism and relaxation-disturbance integrated experiment device

Abstract

The invention discloses a rock disturbance generating mechanism, which comprises a first vertical plate and a third vertical plate. A second guide rod is fixed between the first vertical plate and the third vertical plate, and the second guide rod passes through a driving frame; a driving screw rod passes through the driving frame, the first vertical plate and the third vertical plate and is in screwing assembling with the driving frame through thread; the driving screw rod passes through one end of the third vertical plate and is connected with the output shaft of a loading motor; an impact plate can slide on the first guide rod; the back of the impact plate is provided with an impact disc, one end surface is connected and fixed with one end of an impact guide rod; the impact guide rod is sleeved with an impact spring, and the other end of the impact guide rod is provided with an impact guide end; an automatic loading mechanism is arranged on the driving frame; the bottom part of the loading motor is provided with a motor supporting plate; one end of an impact shaft is provided with a peripheral mounting head, the other end passes through the first vertical plate, and the end, passing through the first vertical plate, is provided with an auxiliary impact disc; and the impact shaft is connected with the loading shaft through a connection shaft assembly. The invention also discloses a relaxation-disturbance integrated experiment device applying the above rock disturbance generating mechanism.

Description

technical field [0001] The invention relates to a rock mechanics experiment device, in particular to a rock disturbance generating mechanism and a relaxation-disturbance comprehensive experiment device for testing rock disturbance. Background technique [0002] Stress rheological phenomena can be seen everywhere in rock mass engineering. For example, after some underground chambers, roadways, tunnels, etc. are excavated and supported, rocks will undergo rheological phenomena after a period of time, and these rheological phenomena often include rock creep and relaxation. . For the rheological rock mass, under the disturbance of the blasting load in the stope, the rheological effect will become more obvious, and accelerated rheology may occur, which may cause mine dynamic disasters. In particular, underground mining in deep mines is often faced with disasters such as rockburst, water inrush, large-scale roof pressure, and goaf instability. These phenomena all involve the comb...

AI Technical Summary

Problems solved by technology

Although this method is simple and feasible, it is very troublesome to manually adjust the pendulum and constantly calculate the impact force generated by the angle of the pendulum.

In addition, there is a great potential safety hazard during the impact of the pendulum rotation. If the operator is negligent, it is likely to be injured or hit other objects.

[0005] In addition, when performing relaxation-disturbance experiments, it is sometimes necessary to apply confining pressure to the rock sample, which requires filling the space where the sample is located with hydraulic oil, which means that openings need to be provided for the space where the sample is located. And it must be able to ensure the sealing of this opening; of course, some experiments can be directly replaced by triaxial testing machines, but most of the openings of triaxial testing machines are directly below and the direction of sample placement is the vertical direction perpendicular to the ground , but placed in the horizontal direction due to insufficient width or length. In addition, when clamping the sample, the general triaxial testing machine generally compresses the sample in the axial direction of the sample first, and then seals and fastens the loading shell. , this total will easily lead to sample displacement and affect the experimental results

Images