Multi-field infrared radiation observation device and method

Abstract

The invention discloses a multi-field infrared radiation observation device and method. The device includes a case body holing samples; the front of the case body is provided with an infrared observation window; the inside of the case body forms a containing cavity for limiting the samples through a lateral loading device, an axial loading device and a front and rear restraint device, so that thebidirectional loading and three-way restraint of the samples can be realized; the front of the infrared observation window is provided with an infrared thermal imager, and the infrared thermal imagerfaces to the containing cavity; the lateral loading device is provided with acoustic emission probes, a pressure sensor and a displacement sensor; the axial loading device is provided with a fluid channel and water leaking holes; and the front and rear restraint device includes an infrared observation window sealing block, a front side fixing block and a rear side fixing block. The problem that infrared radiation information of the surface of the samples cannot be directly observed in traditional penetration experiments can be solved; simultaneous monitoring of physical quantities such as stress and strain, permeability, acoustic emission and infrared radiation during the loading (unloading) of samples can be realized; and experiment conditions can be provided to research the infrared radiation response mechanism and permeability characterization of damage evolution of mining coal and rock.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a multi-field infrared radiation observation device and method. Background technique [0002] The damage fracture and permeability evolution of rock is one of the main academic propositions in the field of rock mechanics and engineering, and it is also a common basic problem in rock engineering such as mining of mineral resources. In recent years, the disadvantages of water resource loss caused by traditional coal mining have been under increasing pressure from environmental protection and public opinion. Among them, water conservation coal mining, which has attracted much attention, urgently needs to focus on the control of rock mass deformation and crack development from the past. It has been developed to the level of controlling the damage and permeability of the mined rock mass. If the quantitative evaluation of damage and permeability is inaccurate or misjudged, it will...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved: In view of the problems that the existing infrared radiation observation device cannot simulate the three-dimensional stress state of coal and rock mass, and cannot realize the simultaneous observation of permeability and infrared radiation, a multi-field infrared radiation observation device is proposed. It can achieve two-way loading and three-way constraint on the sample, and can simultaneously collect the stress and strain, permeability, acoustic emission and infrared radiation of the sample during the loading (unloading) process in real time. Rock mass damage and permeability evolution law and infrared radiation characterization provide basic data

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