Mechanism and Mitigation of Coal Combustion-Induced Methane Accumulation in a Coal Mine Goaf

Lin Li

doi:10.26182/kat9-q389

Mechanism and Mitigation of Coal Combustion-Induced Methane Accumulation in a Coal Mine Goaf

Lin Li

School of Engineering

Research output: Thesis › Doctoral Thesis

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Abstract

The distribution of the methane concentration around a coal combustion area is important for assessing the risk of a coal combustion-triggered methane explosion in coal mine goafs. Although the thermal buoyancy effect has been recognized in natural convections, this effect in a coal combustion-triggered methane flow is rarely considered. In this study, an integrated investigation utilizing experiments and modelling was conducted to reveal the disaster formation mechanism in coal mine goafs. Then, this new model was applied to investigate possible mitigation measures through ventilation dilution at the early, middle, and late stages of spontaneous coal combustion in coal mine goafs.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Liu, Jishan, Supervisor Leong, Yee-Kwong, Supervisor Qin, Botao, Supervisor, External person
Award date	4 Nov 2020
DOIs	https://doi.org/10.26182/kat9-q389
Publication status	Unpublished - 2020

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10.26182/kat9-q389

THESIS - DOCTOR OF PHILOSOPHY - LI, Lin - 2020
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Cite this

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title = "Mechanism and Mitigation of Coal Combustion-Induced Methane Accumulation in a Coal Mine Goaf",

abstract = "The distribution of the methane concentration around a coal combustion area is important for assessing the risk of a coal combustion-triggered methane explosion in coal mine goafs. Although the thermal buoyancy effect has been recognized in natural convections, this effect in a coal combustion-triggered methane flow is rarely considered. In this study, an integrated investigation utilizing experiments and modelling was conducted to reveal the disaster formation mechanism in coal mine goafs. Then, this new model was applied to investigate possible mitigation measures through ventilation dilution at the early, middle, and late stages of spontaneous coal combustion in coal mine goafs. ",

keywords = "Coal combustion, methane accumulation, Methane explosion, buoyancy effect, ventilation dilution, coal mine goaf",

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language = "English",

school = "The University of Western Australia",

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AU - Li, Lin

PY - 2020

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N2 - The distribution of the methane concentration around a coal combustion area is important for assessing the risk of a coal combustion-triggered methane explosion in coal mine goafs. Although the thermal buoyancy effect has been recognized in natural convections, this effect in a coal combustion-triggered methane flow is rarely considered. In this study, an integrated investigation utilizing experiments and modelling was conducted to reveal the disaster formation mechanism in coal mine goafs. Then, this new model was applied to investigate possible mitigation measures through ventilation dilution at the early, middle, and late stages of spontaneous coal combustion in coal mine goafs.

AB - The distribution of the methane concentration around a coal combustion area is important for assessing the risk of a coal combustion-triggered methane explosion in coal mine goafs. Although the thermal buoyancy effect has been recognized in natural convections, this effect in a coal combustion-triggered methane flow is rarely considered. In this study, an integrated investigation utilizing experiments and modelling was conducted to reveal the disaster formation mechanism in coal mine goafs. Then, this new model was applied to investigate possible mitigation measures through ventilation dilution at the early, middle, and late stages of spontaneous coal combustion in coal mine goafs.

KW - Coal combustion

KW - methane accumulation

KW - Methane explosion

KW - buoyancy effect

KW - ventilation dilution

KW - coal mine goaf

U2 - 10.26182/kat9-q389

DO - 10.26182/kat9-q389

M3 - Doctoral Thesis

ER -

Mechanism and Mitigation of Coal Combustion-Induced Methane Accumulation in a Coal Mine Goaf

Abstract

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