Intelligent exploitation geomechanical simulation test method for coal

Abstract

The invention discloses an intelligent exploitation geomechanical simulation test method for coal. The intelligent exploitation geomechanical simulation test method for the coal comprises the following steps: 1) performing a similar material ratio test to search a proper ratio to simulate a rock layer and a coal layer; 2) laying a uniformly stirred bottom plate rock layer similar material on a bottom plate of the coal layer in a layered manner, and tamping and curing; 3) laying a lower partition plate on the upper part of the bottom plate of the coal layer; 4) arranging a slide device above the lower partition plate; 5) laying an upper partition plate above the slide device; 6) laying a coal layer similar material for an un-exploited coal layer, and tamping and curing; 7) laying a uniformly stirred top plate rock layer similar material on a top plate of the coal layer in a layered manner, embedding a detecting element, and tamping and curing; 8) performing simulated ground stress loading on a model support; and 9) pulling the slide device to a platform by a power part, and simulating coal layer exploitation by forwards moving the slide device along a working surface. The method issimpler, is easy to implement, is relatively low in cost, and realizes integration of an exploitation system and a coal transportation system.

Description

technical field [0001] The present invention generally relates to a coal seam mining simulation method, in particular to a coal intelligent mining geomechanics simulation test method in the field of mining engineering. Background technique [0002] The three-dimensional geomechanics model test is an important research method in the scientific research in the field of mining. The actual working conditions in the field are complex, and it is impossible to obtain the theoretical solution under such complex boundary conditions by deriving theoretical formulas. Numerical simulation technology is often due to the problem of parameter selection. Or software defects can not get satisfactory results, the field test is the most authentic and credible, but the field test process is cumbersome, and puts forward high requirements for manpower, material and financial resources. The three-dimensional geomechanics model test is conducive to highlighting the main contradictions in the comple...

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Problems solved by technology

[0002] The three-dimensional geomechanics model test is an important research method in the scientific research in the field of mining. The actual working conditions in the field are complex, and it is impossible to obtain the theoretical solution under such complex boundary conditions by deriving theoretical formulas. Numerical simulation technology is often due to the problem of parameter selection. Or software defects can not get satisfactory results, the field test is the most authentic and credible, but the field test process is cumbersome, which puts forward high requirements for manpower, material and financial resources

Chinese patent (Application No. 200810128331.8) uses an airbag to simulate the coal seam, and simulates the coal seam excavation process through the airbag deflation. However, the airbag itself is a flexible device, and it is prone to pressure oscillation when it is under pressure, which will affect the reliability of stress monitoring; Chinese patent (Application No. 201510049794.5) Simulates coal seam excavation through an electric wax melting device, but the wax melting time is long and the process is cumbersome; Chinese patent (Application No. 201510882637.2) controls the rotation of the auger drill rod to excavate coal seams through the traveling gear, and the system has strong reliability. This system is especially suitable for similar simulation experiments of plane stress. For the situation where the working face is located inside the three-dimensional model frame, this system is no longer applicable; Chinese patent (application number 201711217353.7) realizes the excavation and installation of simulated coal seams through drill pipes wit

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