Rockburst model testing device

Abstract

The invention provides a rockburst model testing device which is composed of a main machine and a control system. The main machine is mainly composed of a base, model in-position advance and retreat oil cylinders (10), a restraining door panel (42) and bearing frames (15), wherein the model in-position advance and retreat oil cylinders are two in number and symmetrically arranged on two sides of the left a portion above the base. The bearing frames are multiple in number and arranged on the right of a portion above the base in an aligned mode and side by side. In an inner cavity which is formed by a plurality of horseshoe-shaped bearing frames, the left side is provided with a side locating beam (43), the right side is provided with side uniform-distribution pressure loaders (67), the upper portion is provided with uniform-distribution top uniform-distribution pressure loaders (16), the bottom is provided with a base board (63) used for place taking of a model, and the first bearing frame is provided with the restraining door panel part. According to the rockburst model testing device, imitation of large-size model rockburst of 100*60*40 cm can be achieved indoors, an obvious size domino effect caused by the small size of a sample is further reduced, and the rockburst phenomenon is imitated really.

Description

technical field [0001] The invention relates to a model test device for replicating and reproducing rockburst indoors with a model block size of 100×60×40 cm, and relates to the structure of the device and a self-balancing loading and unloading system adopted. Background technique [0002] Rockburst is a special dynamic phenomenon caused by gradual failure in the excavation of underground rock mass engineering under high ground stress conditions. The generation of rockburst directly threatens the safety of personnel and equipment, and destroys the underground engineering structure. It has become a major technical problem in deep or deeply buried underground engineering construction, and is a worldwide disaster phenomenon. As the famous rock engineer Professor Brown (1988) pointed out: "It is difficult to reach a consensus even on the definition of rockburst. The successful answer to this question of rockburst is currently being studied in many research centers around the wor...

AI Technical Summary

Problems solved by technology

At present, most of the physical model tests that have been carried out are carried out with the help of presses. Due to the limitation of experimental equipment, the sample size is small and the size effect is greatly affected. There is a big difference between its representativeness and the actual conditions and states of rockbursts. has great limitations

The purpose of the present invention is to realize the generation of simulating large-scale model rockburst, and the size of model test piece is the device and test of 100 * 60 * 40cm, there is no report yet

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