Calculation of coal cleats spacing for methane degassing by image processing

IF 1.9 4区工程技术 Q4 ENERGY & FUELS

Energy Exploration & Exploitation Pub Date : 2024-08-19 DOI:10.1177/01445987241267962

Adel Taheri, Farhang Sereshki, Fatemeh Sadat Rohani

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引用次数: 0

Abstract

Coal bed methane is one of the clean energy sources in the world. Methane molecules are confined inside the pores of coals and when the gas drainage wells are drilled into the coal seams, due to the resulted pressure difference. Coal cleats are spread all over the coal seam as face and butt cleats and play an essential role in the methane gas drainage operation from coal mines. Calculating the coal cleats spacing makes great help in modeling the amount of emitted gas followed by calculating the spacing of gas suction wells. Furthermore, the time required for gas drainage will be determined. Computer-based image processing technique has been utilized to identify the cleats spacing. In this study, three-dimensional computed tomography scan images were prepared for coal samples from Tabas Coal Mine in Iran. Computer-based image processing technology was conducted to determine the coal cleats. Their spacing was then calculated. Based on the results obtained using image processing with computer, the average distance between face cleats was 20 to 30 mm and the distance between butt cleats was 15 to 25 mm. The results of this study are used to modeling the amount of methane gas in the coal cleats. Based on this modeling, the amount of released gas and the distance between the wells can be designed.

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通过图像处理计算煤层气脱气的煤层间距

煤层甲烷是世界上的清洁能源之一。甲烷分子被封闭在煤炭的孔隙中，当瓦斯抽放井钻进煤层时，由于压力差的作用，甲烷分子被封闭在煤炭的孔隙中。煤夹板作为工作面和对接煤夹板遍布整个煤层，在煤矿甲烷瓦斯抽放作业中起着至关重要的作用。计算煤层夹板间距对瓦斯抽放量的建模和瓦斯抽放井间距的计算有很大帮助。此外，还将确定瓦斯抽放所需的时间。计算机图像处理技术被用来确定煤层间距。在这项研究中，为伊朗塔巴斯煤矿的煤炭样本制作了三维计算机断层扫描图像。通过计算机图像处理技术确定了煤炭夹层。然后计算出它们的间距。根据计算机图像处理获得的结果，工作面夹板之间的平均间距为 20 至 30 毫米，对接夹板之间的间距为 15 至 25 毫米。这项研究的结果被用于煤夹板中甲烷气体数量的建模。在此基础上，可以设计释放的瓦斯量和井间距离。

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

Energy Exploration & Exploitation 工程技术-能源与燃料

CiteScore

5.40

自引率

3.70%

发文量

审稿时长

3.9 months

期刊介绍： Energy Exploration & Exploitation is a peer-reviewed, open access journal that provides up-to-date, informative reviews and original articles on important issues in the exploration, exploitation, use and economics of the world’s energy resources.