{"title":"Experimental Study on Prevention of Coal and Gas Outburst by Hydraulic Fracturing in High Gas Coal Mine in Yangquan Mining Area","authors":"Zhou Zhang, Pengxiang Wang, Wanying Yu, Lifang Zhao, Yunxing Cao, Baoan Xian, Yibing Wang, Fei Zhang","doi":"10.1002/ese3.70118","DOIUrl":null,"url":null,"abstract":"<p>To investigate the hydraulic fracturing mechanism of high-fluid wells in the Yangquan mining area, coal seams from the Xinyuan and Xinjing mines were selected as research subjects. Experiments were conducted using the TCQT-III low-permeability coalbed gas-phase displacement and production enhancement apparatus, along with the FINESORB-3120 isothermal adsorption instrument. The study included hydraulic fracturing simulation tests, experiments on the effects of water content on the physical and mechanical properties of coal, and analyses of gas adsorption and desorption responses to external water. Experimental results indicate that after hydraulic fracturing simulation, the water content and permeability of coal samples increased by 3.97–6.79 times and 33.45–75.61 times, respectively, compared to their original state. The observed deformations during fracturing suggest the connectivity and expansion of microfractures within the coal. Under identical stress loading conditions, higher water content led to lower peak strength and greater deformation, with the maximum reduction in peak strength reaching 34.44%. During isothermal adsorption and desorption, the values of parameters <i>a</i> and <i>b</i>, as well as the desorption volume, consistently decreased with increasing water content, with <i>b</i> showing a maximum reduction of over 50%. A systematic analysis of these experimental results was conducted to explore the comprehensive outburst mitigation mechanism of high-volume hydraulic fracturing. These findings provide valuable insights for applying hydraulic fracturing technology to mitigate outbursts in high-gas mining areas.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 7","pages":"3631-3643"},"PeriodicalIF":3.4000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70118","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Science & Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ese3.70118","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
To investigate the hydraulic fracturing mechanism of high-fluid wells in the Yangquan mining area, coal seams from the Xinyuan and Xinjing mines were selected as research subjects. Experiments were conducted using the TCQT-III low-permeability coalbed gas-phase displacement and production enhancement apparatus, along with the FINESORB-3120 isothermal adsorption instrument. The study included hydraulic fracturing simulation tests, experiments on the effects of water content on the physical and mechanical properties of coal, and analyses of gas adsorption and desorption responses to external water. Experimental results indicate that after hydraulic fracturing simulation, the water content and permeability of coal samples increased by 3.97–6.79 times and 33.45–75.61 times, respectively, compared to their original state. The observed deformations during fracturing suggest the connectivity and expansion of microfractures within the coal. Under identical stress loading conditions, higher water content led to lower peak strength and greater deformation, with the maximum reduction in peak strength reaching 34.44%. During isothermal adsorption and desorption, the values of parameters a and b, as well as the desorption volume, consistently decreased with increasing water content, with b showing a maximum reduction of over 50%. A systematic analysis of these experimental results was conducted to explore the comprehensive outburst mitigation mechanism of high-volume hydraulic fracturing. These findings provide valuable insights for applying hydraulic fracturing technology to mitigate outbursts in high-gas mining areas.
期刊介绍：
Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.
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