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{"title":"Study on the influence of water injection pressure on water absorption process and water injection effect of coal","authors":"Lin Wang, Xiangjun Chen, Dezhang Wang, Fenghua An","doi":"10.1002/ghg.2203","DOIUrl":null,"url":null,"abstract":"<p>Rock burst disasters can be reduced and prevented with the help of coal dust water injection. In this study, the high-pressure water injection device is used to examine how the water absorption rate changes over time under various water injection pressures. The results reveal that the water absorption rate of coal samples increases quickly initially before slowing down with water absorption time. Its change can be described using the Langmuir equation. In addition, the Langmuir equation is utilized to demonstrate how water injection pressure affects the maximum water absorption of coal samples. The effects of experimental findings and numerical analysis are investigated on water injection pressure. The breadth and extent of coal bodies with increased moisture are continuously expanding at the same water injection pressure and water injection time. The water absorption of coal close to the borehole remains relatively unchanged with an increase in water injection pressure, but the water absorption range of coal in the vicinity increases. Therefore, raising the water injection pressure and duration will improve the effective range of water injection. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.</p>","PeriodicalId":12796,"journal":{"name":"Greenhouse Gases: Science and Technology","volume":"13 3","pages":"369-378"},"PeriodicalIF":2.7000,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Greenhouse Gases: Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ghg.2203","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
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Abstract
Rock burst disasters can be reduced and prevented with the help of coal dust water injection. In this study, the high-pressure water injection device is used to examine how the water absorption rate changes over time under various water injection pressures. The results reveal that the water absorption rate of coal samples increases quickly initially before slowing down with water absorption time. Its change can be described using the Langmuir equation. In addition, the Langmuir equation is utilized to demonstrate how water injection pressure affects the maximum water absorption of coal samples. The effects of experimental findings and numerical analysis are investigated on water injection pressure. The breadth and extent of coal bodies with increased moisture are continuously expanding at the same water injection pressure and water injection time. The water absorption of coal close to the borehole remains relatively unchanged with an increase in water injection pressure, but the water absorption range of coal in the vicinity increases. Therefore, raising the water injection pressure and duration will improve the effective range of water injection. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.
注水压力对煤吸水过程及注水效果影响的研究
煤尘注水可以减少和预防冲击地压灾害。本研究采用高压注水装置，考察不同注水压力下吸水率随时间的变化情况。结果表明:随着吸水时间的延长，煤样的吸水率在初始阶段迅速增加，而后逐渐减慢;它的变化可以用朗缪尔方程来描述。此外，利用Langmuir方程说明了注水压力对煤样最大吸水率的影响。研究了实验结果和数值分析结果对注水压力的影响。在相同注水压力和注水时间下，含水率增加的煤体宽度和范围不断扩大。随着注水压力的增加，井眼附近煤的吸水率相对不变，但附近煤的吸水幅度增大。因此，提高注水压力和注水时间可以提高注水的有效范围。©2023化学工业协会和John Wiley &儿子,有限公司
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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