Miniature three-dimensional physical similarity simulation experiment table of goaf gas transport rules

Abstract

The invention relates to a three-dimensional physical simulation experiment for developing mining overlying strata movement deformation and goaf gas transport rules by using similar materials, in particular to a miniature three-dimensional physical similarity simulation experiment table of goaf gas transport rules, wherein the miniature three-dimensional physical similarity simulation experiment table is used for conducting mine ground pressure and goaf gas transport in a laboratory under the three-dimensional condition. The experiment table comprises an experiment table box body, a double-rocker mining system, a controllable ventilation system, a gas injection system, a drainage system and a testing system. The experiment table is suitable for being used for conducting physical similarity simulation experiments on mining-induced fracture evolution rules and the goaf gas transport rules under the three-dimensional condition. The miniature three-dimensional physical similarity simulation experiment table of the goaf gas transport rules can meet the requirements for further developing the mining pressure relief gas transport rules and improve a coal and gas safety co-mining theoretical system.

Description

technical field [0001] The patent of the present invention relates to the use of similar materials to carry out three-dimensional physical simulation experiments on the movement and deformation of the overlying rock in mining and the gas migration in the goaf, specifically a simulation of mine pressure and gas migration in the goaf under three-dimensional conditions in the laboratory. Simulation test bench. It is suitable for simulation experiments required by major coal universities and scientific research institutes in the mining industry. Background technique [0002] With the continuous improvement of coal mining mechanization, the continuous expansion of production scale, and the continuous increase of mining depth, it is particularly important to carry out research on the movement and deformation of overlying rock during mining and the extraction and utilization of gas. The research methods of rock movement law and gas migration law mainly include: theoretical analysi...

AI Technical Summary

Problems solved by technology

As far as the natural rock mass studied by mining engineering is concerned, the mechanical problems in it include many influencing factors, extremely complex physical processes, and serious human disturbances, so that it is impossible to accurately describe the rock mass on the basis of existing theories. The constitutive equation of the body stress-strain relationship, so it is impossible to conduct a more accurate theoretical analysis of the problem

On-site measurement is the most direct and accurate way, but this method has the constraints of a long inherent period, a lot of manpower and material resources, and severe on-site conditions, and it is very difficult to directly test the changes in the internal properties of the rock mass. Therefore, It also lacks wide adaptability to non-measurement areas

The numerical simulation method is limited by factors such as theory, numerical calculation, and the development of computer software and hardware. When building a complex underground engineering model, it has to be greatly simplified, resulting in a large difference between the calculation results and the field.

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