Three-dimensional dynamic load loading large-sized similar material simulation platform

Abstract

A three-dimensional dynamic load loading large-sized similar material simulation platform includes a flexible force transmission rubber, a box body and a simulation platform; a displacement sensor is arranged between a guide rail and a top cover plate, and a front cover plate, side covers, a rear cover, the top cover plate, hydraulic cylinders, the guide rail, the displacement sensor and a pressure sensor form a cover plate loading device; and the flexible force transmission rubber is arranged at the inner side of the front cover plate, the side cover plates, the rear cover plate and the top cover plate. The three-dimensional dynamic load loading large-sized similar material simulation platform is provided with the flexible force transmission rubber, the flexible force transmission rubber has the characteristics of flexibility, changeability, and incompressible size, a water injection tube is arranged on the side surface of the box body, and is used for introducing a filling material to the goaf and flooding water to a simulated rock stratum after the coal seam is exploited, and high pressure gas is added to a simulated coal seam to stimulate gas in order to meet different experiment requirements.

Description

technical field [0001] The invention relates to the technical field of stress distribution testing of ore bodies and rock masses in the field of mines, in particular to a three-dimensional dynamic load loading simulation platform for large-scale similar materials. Background technique [0002] With the mining of the ore body, the stress balance state of the coal and rock mass is broken. When the ore body is mined, an underground space is formed, which causes the stress of the coal and rock mass to redistribute, and continues until a new balance is formed in the coal and rock mass. In the process of stress redistribution, the surrounding rock is deformed, moved, and destroyed, thereby exerting pressure on the working face, roadway and surrounding rock. However, it is difficult to visualize the problems that arise in actual production, so we have to carry out relevant simulation tests to obtain relevant data to solve actual production problems. [0003] The inventors have fou...

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Problems solved by technology

[0013] The purpose of the present invention is to provide a three-dimensional dynamic load loading large-scale similar material simulation platform to solve the problem that the size of the model proposed in the above background technology is small, the size of the model is fixed and cannot be adjusted, the loading direction of the force is too single, and the simulated rock mass The stress and strain monitoring is too simple, and the excavation of the mine layer must be done manually after opening the test piece box, which will cause an unloading effect, which is inconsistent with the actual working conditions. The installation process of the device is basically carried by hand, which is inconvenient to operate. The stress loading system of the material simulation experiment platform is mostly manual, and the loading of manual control force is not accurate enough to ensure the stability of the force.

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