Blasting simulation test device and blasting simulation test method on basis of geo-mechanical model tests

Abstract

The invention provides a large three-dimensional blasting simulation test device and a test method on the basis of novel technological ideas of geo-mechanical model tests. The large three-dimensional blasting simulation device and the test method are designed on the basis of comprehensive reference to blasting simulation test devices and geotechnical engineering multifunctional test devices. The large three-dimensional blasting simulation test device mainly comprises a reaction frame (1), hydraulic jacks (2), a test box (3) and the like. A geological structure coal and rock mass test model (4) is built, explosive quantity micro-control blasting explosive columns (5) are matched with a data monitoring sensor interface (6), and accordingly the geo-mechanical model tests and blasting simulation tests can be organically combined with one another. The large three-dimensional blasting simulation test device and the test method have the advantages that true three-dimensional hydraulic loading is implemented by the test device, coal, rock mass and complicated geological structures are integrally fused with one another, accordingly, the blasting simulation tests can be carried out on different joints, structural planes, weak intercalated layers and complicated geological structural belts with faults, fold and the like in different stress states, and a novel idea and the test method can be provided for research on safe and efficient blasting theories for geological structural belts.

Description

Technical field: [0001] The invention relates to a blasting simulation test device and a test method, in particular to a test method combining a geomechanics model test with a large-scale true three-dimensional blasting simulation test. Background technique: [0002] With the continuous increase of coal mine mining intensity, medium and deep hole controlled blasting technology is more and more widely used in coal mine production, such as low permeability coal seam anti-permeability to improve gas extraction rate, hard roof forced caving, thick coal seam hard roof Fully mechanized coal caving mining, blasting excavation and coal mining in Shimen, etc. [0003] However, the vibration generated by blasting will have a strong impact on the coal and rock mass, and the rapid redistribution of stress will promote the deterioration of coal and rock and easily induce gas dynamic disasters. When the blasting operation disturbs the coal rock mass in the underground geological structur...

AI Technical Summary

Problems solved by technology

[0008] The problem to be solved by the present invention is: the existing blasting simulation test uses isotropic homogeneous materials for repeated tests, and the size of the test device is small, it cannot realize true three-dimensional loading, and no consideration is given to geological structure, joints and structural planes and weak interlayer etc. on the blasting effect

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