Results 1 to 10 of about 282,083 (266)
Refractive-index gas thermometry. [PDF]
Metrologia, 2019 The principles and techniques of primary refractive-index gas thermometry (RIGT) are reviewed. Absolute primary RIGT using microwave measurements of helium-filled quasispherical resonators has been implemented at the temperatures of the triple points of neon, oxygen, argon and water, with relative standard uncertainties ranging from 9.1 × 10-6 to 3.5 ×
Rourke PMC +6 more
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Research on oxidation characteristics of aqueous coal based on index gas method
Meitan kexue jishu, 2023 To research the influence of moisture on the oxidation characteristics of coal, the coal spontaneous combustion experiment was carried out to determine the composite index gas that can predict the spontaneous combustion of coal, and then the temperature ...
YI Xin +3 more
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矿业科学学报, 2022 In order to explore the low-temperature oxidation characteristics and evolution law of oxidized coal, this paper adopted a temperature-programmed experiment system.
Chen Rongfang +3 more
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Prediction model of coal spontaneous combustion temperature based on data filling
Gong-kuang zidonghua, 2023 Most of the existing coal spontaneous combustion temperature prediction models are based on relatively complete index gas sample data. However, the index gas data are affected by instruments or human factors.
ZHAI Xiaowei +5 more
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Meikuang Anquan, 2022 In order to master the relationship between the key active groups of weathered coal and oxidized coal at the characteristic temperature of coal spontaneous combustion, this paper takes the fresh coal as the reference coal to compare and analyze the ...
ZHAO Jingyu +4 more
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Prevention and control technology and goaf spontaneous combustion index in distance coal seams
Meikuang Anquan, 2022 In order to study the spontaneous combustion law of close distance easy spontaneous combustion coal seams, taking the mining face of Bulianta Mine No.22 coal seam 3# panel as an example, collected No.22 coal seam samples of Bulianta Mine, three particle ...
GUO Haixiang
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Meikuang Anquan, 2022 The coal seam group in the outburst mine has the characteristics of mutual influence in the mining process, the goaf is connected, there are many air leakage places, and the fire prevention work is difficult.
DONG Xiaoming +4 more
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Experimental Study on Spontaneous Combustion Characteristics of Different Rank Coals
Meikuang Anquan, 2020 To study the spontaneous combustion characteristics of different rank coals, HM lignite, ZX long flame coal, DHS gas coal, DL lean coal, ZLS anthracite coal were taken as research objects, and the parameters of five coal samples were measured by ...
HAO Yu
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Meikuang Anquan, 2022 The residual coal in the goaf is oxidized in the air leakage environment and gradually forms weathered coal, the macroscopic morphology and microstructure of weathered coal are different from that of raw coal, and the ambient oxygen concentration of ...
SONG Shuanglin
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Fire, 2022 Studies show that accurate division of spontaneous combustion (SC) zones in the goaf and the determination of the prediction system of the SC index are of great significance to prevent spontaneous and unwanted combustions in the goaf. Aiming at resolving
Jiamei Chai
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