Experimental study on infrared radiation of bolt and rock in condition of loading

Ji, Yuanming

doi:10.1117/12.790746

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…As the relationship between surrounding rock stress, strain and surrounding rock surface infrared radiation can be expressed qualitatively. Additionally, with the increase of load, the infrared radiation temperature is higher [39][40][41][42][43][44][45], Fluke Ti450PRO infrared thermal imager was used for infrared detection of roadway surrounding rock during the experiment. The temperature measurement range of Fluke Ti450PRO infrared thermal imager is −20-1200 • C, the thermal sensitivity is 0.025 • C (30 Mk), and the image resolution is 640 × 480.…”

Section: Experiments Plan Of the Physical Similarity Simulation 41 Te...mentioning

confidence: 99%

Physical Similarity Simulation of Deformation and Failure Characteristics of Coal-Rock Rise under the Influence of Repeated Mining in Close Distance Coal Seams

et al. 2022

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Aiming at the problem that it is difficult to achieve accurate laying of model and precise excavation of roadways in special surrounding rock structure roadway according to conventional physical similarity simulation, which reduces the reliability of experimental results. An accurate laying of model and precise excavation of roadway method, named “labeling positioning and drawing line, presetting roadway model” (LPDLPRM), was proposed. The physical similarity simulation of deformation and failure characteristics of surrounding rock of coal-rock rise, under the influence of repeated mining in close distance coal seams, was carried out based on the method and infrared detection. The results show that the coal-rock rise in close distance coal seams was affected by repeated mining disturbances, and the surrounding rock of coal-rock rise was characterized by obvious asymmetric deformation, specific for the stress and strain near the coal pillar were higher than that of other parts, and cracks near the coal pillar were denser than other parts; when the coal seam is mined in which the coal-rock rise is located, the stress concentration of the surrounding rock near the rise was weakened by mining pressure relief in the upper coal seam; the stress concentration of the surrounding rock near the rise increases when the coal and the lower coal seam are mined, and the stress on the right side (coal pillar side) near the coal-rock rise was the most concentrated. Therefore, it is important to take measures to strengthen support near the coal pillar and to control asymmetric deformation when the coal-rock rise is influenced by repeated mining.

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Section: Experiments Plan Of the Physical Similarity Simulation 41 Te...mentioning

confidence: 99%

Physical Similarity Simulation of Deformation and Failure Characteristics of Coal-Rock Rise under the Influence of Repeated Mining in Close Distance Coal Seams

et al. 2022

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“…It converts the object surface temperature into visual images. So it has been widely applied to various armament devices [4] . At the same time, the accurate IR signature measurement of aircraft engines is paramount for designing [5] .…”

Section: Introductionmentioning

confidence: 99%

Ground experiment of infrared characteristics of space target

et al. 2011

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A experiment of infrared characteristics of space target have been carried out in situ using ground equipments to better study the rule of the parameters related to the object characteristics. The experimental facility is realized in the laboratory. This facility serves two purposes, one is to verify the feasibility of the ground test for infrared characteristics of space target, and the other is to supply the required data for target characteristics simulations. The target characteristic ground experimental system consists of a space environment simulator, a space target simulator and infrared signal measuring apparatus. The space environment simulator afford an condition that the vacuum pressure is 10 -4 Pa, 80K , absorptivity about 0.9 radiation shield, and the radiation sources similar to the space environment. The different experiments based on different flight parameters of the same target were carried out like system engineering. The experiment results are consistent with the results of simulation and theory analyzing. The experiment is reasonable and efficient, which contributes to the research on the characteristic of target, and parts of the experiment system give a new method to the similar study.

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Experimental study on infrared radiation of bolt and rock in condition of loading

Cited by 2 publications

References 2 publications

Physical Similarity Simulation of Deformation and Failure Characteristics of Coal-Rock Rise under the Influence of Repeated Mining in Close Distance Coal Seams

Physical Similarity Simulation of Deformation and Failure Characteristics of Coal-Rock Rise under the Influence of Repeated Mining in Close Distance Coal Seams

Ground experiment of infrared characteristics of space target

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