Movable multifunctional coal and rock stratum analog simulation experiment table

Abstract

The invention provides a movable multifunctional coal and rock stratum analog simulation experiment table. The experiment table comprises an experiment table frame, a pressurizing cross beam, a base and a bottom plate, the pressurizing cross beam is transversely arranged in the experiment table frame, the two ends of the pressurizing cross beam are fixed to the experiment table frame, the base is arranged below the experiment table frame, and the bottom plate is arranged on a lower frame strip of the experiment table frame; and a plurality of lower pressurizing mechanisms are arranged on the base, through holes are formed in lower frame strips of the experiment table frame, the moving ends of the lower pressurizing mechanisms can pass through the through holes, grooves are formed in the lower portions of side frame strips of the experiment table frame, a plurality of upper pressurizing mechanisms are arranged below the pressurizing cross beam, and a pressurizing plate is hinged to the moving ends of the upper pressurizing mechanisms. The simulation experiment of the inclined coal rock stratum is realized, and the original stress condition of the coal seam is not damaged; adjustment of a model area in the vertical direction, the left-right direction and the front-back direction is achieved, and the equipment cost is reduced; and the pressing pressure is controllable and convenient to adjust.

Description

technical field [0001] The invention relates to a similar simulation experiment device for geological rock formations, in particular to a similar simulation experiment platform capable of bidirectional pressurization and variable inclination angle. Background technique [0002] In coal seam mining, since most of the coal mining work takes place underground, it is difficult to monitor the dynamic changes of the overlying rock structure and the law of surface subsidence caused by mining, and the field measurement takes a long period of time, and consumes manpower and material resources at the same time. And financial resources are big. Therefore, it is necessary to use similar simulation experimental devices to lay and shape similar materials in coal and rock formations, and to detect and analyze relevant experimental data, so as to guide production practice. The existing mine pressure simulation test bench basically adopts the fixed structure of the bracket, which is inconve...

AI Technical Summary

Problems solved by technology

[0009] (1) The existing simulation test device only realizes vertical pressurization, but does not realize lateral and bidirectional pressurization, which reduces the accuracy of the test;

[0010] (2) It is only suitable for the simulation of horizontal coal seams, not suitable for excavation tests of inclined coal seams, which reduces the authenticity of the tests;

[0011] (3) Destroying the original stress conditions and stress distribution of the coal rock formation, which brings errors to the experimental results;

[0012] (4) After the test is formed, manual excavation is used, which is time-consuming and laborious, and cannot accurately simulate the mining situation of the shearer, and there is a certain error with the on-site mechanical coal mining;

[0013] (5) The existing simulation test device is inconvenient to move, which is not conducive to improving the test efficiency, and the uneven force on the base affects the internal stress distribution of the coal seam;

[0014] (6) The existing simulation experiment device has realized the vertical scalable expansion of the device, but it still cannot achieve the horizontal expansion of the experimental device

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