Modeling Effects of Gravity on Gas Drainage in Methane-Containing Coal Seams

IF 0.7 4区工程技术 Q4 MINING & MINERAL PROCESSING

Journal of Mining Science Pub Date : 2023-11-29 DOI:10.1134/s1062739123040014

M. V. Kurlenya, K. Kh. Lee, V. G. Kazantsev, H. U. Li, V. S. Zykov

引用次数: 0

Abstract

The apparatus of nonstationary thermoelasticity is used to estimate the joint and separate effects of gas pressure sorption and gravity on gas drainage and on stress state in the vicinity of underground openings. It is shown that gas flow changes the stress state of coal, and pressure in sorption essentially counteracts pressure in gravity. Ignorance of the latter fact may lead to a poorly substantiated choice of a coal gas drainage technology and to an erroneous prediction of rock strength and stability.

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重力对含甲烷煤层瓦斯抽放的模拟效应

摘要利用非平稳热弹性仪，研究了瓦斯压力吸附和重力对地下巷道附近瓦斯抽采和应力状态的联合和单独影响。结果表明，气体流动改变了煤的应力状态，吸附压力基本上抵消了重力压力。对后一事实的忽视可能导致对瓦斯抽放技术的选择缺乏依据，并导致对岩石强度和稳定性的错误预测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining Science 工程技术-矿业与矿物加工

CiteScore

1.70

自引率

25.00%

发文量

审稿时长

24 months

期刊介绍： The Journal reflects the current trends of development in fundamental and applied mining sciences. It publishes original articles on geomechanics and geoinformation science, investigation of relationships between global geodynamic processes and man-induced disasters, physical and mathematical modeling of rheological and wave processes in multiphase structural geological media, rock failure, analysis and synthesis of mechanisms, automatic machines, and robots, science of mining machines, creation of resource-saving and ecologically safe technologies of mineral mining, mine aerology and mine thermal physics, coal seam degassing, mechanisms for origination of spontaneous fires and methods for their extinction, mineral dressing, and bowel exploitation.