{"paper_id":"32b8070e-d762-4f59-bb19-38ee0925b05b","body_text":"Experimental investigation of the impact of gas generated via coal oxidation in the upstream coal goaf on the subsequent residual coal oxidation process | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Experimental investigation of the impact of gas generated via coal oxidation in the upstream coal goaf on the subsequent residual coal oxidation process Baoyong Zhang, Jing Xing This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6039825/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 01 Jul, 2025 Read the published version in Scientific Reports → Version 1 posted 11 You are reading this latest preprint version Abstract For large-scale goaf with a continuous air leakage flow field, it is imperative to elucidate the influences of the upstream airflow after coal oxidation on the downstream O 2 consumption, heat release. In this paper, the temperature rise, O 2 consumption, gas production, and heat release characteristics of coal along the direction of the airflow are analyzed in an experimental study on coal oxidation conducted in a 900 mm long coal sample tank utilizing program-controlled heating. The results suggest that as the temperature of the coal increases to 70–120°C, there is a minimal difference in the O 2 consumption rate between the inflow and middle sections, and this rate is significantly lower compared to that in the outflow section. After the temperature of the coal surpasses 120°C, the O 2 consumption and heat release in the inflow section reach their peak values. In contrast, at the same temperature, both the O 2 consumption and heat release in the middle section exceed those in the outflow section. Moreover, if the O 2 concentration of the inflow into the outflow section drops below 14.1%, this leads to a significant decrease in the CO production rate. The O 2 consumption and heat release rates in the three sections are influenced by different factors. In the inflow section, the temperature and CO generation play significant roles. The middle section is affected by the incoming O 2 concentration, CO production, and temperature. The outflow section is influenced by the incoming O 2 , CO, and CO 2 concentrations and the CO 2 generation. Physical sciences/Physics/Statistical physics thermodynamics and nonlinear dynamics/Thermodynamics Physical sciences/Energy science and technology/Fossil fuels/Coal Physical sciences/Energy science and technology/Carbon capture and storage Continuous air leakage field Airflow path Oxidation Heat release Variations Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 01 Jul, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 17 Apr, 2025 Reviews received at journal 16 Apr, 2025 Reviews received at journal 13 Apr, 2025 Reviewers agreed at journal 13 Apr, 2025 Reviewers agreed at journal 11 Apr, 2025 Reviewers agreed at journal 11 Apr, 2025 Reviewers agreed at journal 11 Apr, 2025 Reviewers agreed at journal 11 Apr, 2025 Reviewers invited by journal 11 Apr, 2025 Submission checks completed at journal 11 Apr, 2025 First submitted to journal 31 Mar, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {\"props\":{\"pageProps\":{\"initialData\":{\"identity\":\"rs-6039825\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":false,\"archivedVersions\":[],\"articleType\":\"Article\",\"associatedPublications\":[],\"authors\":[{\"id\":442207677,\"identity\":\"04358357-fc4e-4754-979b-d80863138600\",\"order_by\":0,\"name\":\"Baoyong Zhang\",\"email\":\"\",\"orcid\":\"\",\"institution\":\"Heilongjiang University of Science and Technology\",\"correspondingAuthor\":false,\"prefix\":\"\",\"firstName\":\"Baoyong\",\"middleName\":\"\",\"lastName\":\"Zhang\",\"suffix\":\"\"},{\"id\":442207678,\"identity\":\"e8b24442-275a-43da-a734-3ce22aa58643\",\"order_by\":1,\"name\":\"Jing Xing\",\"email\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3ElEQVRIiWNgGAWjYBACNvbmAwYfftjI8fM3Nj5IqKghrIWP51hC4cyeNGPJGYebDR6cOUZYi5xEjsJnDrbDiRsa0tskH7YwE+EwnjOMmxl4gFoYDrZVJDawMfC3dycQ8EvvYeMCi3Tj7cyNbTcSd8gwSJw5u4GALefSjGfwWMvubDgI1HKGjcFAIpeAFokc8988bMyMGw4kthUktjETpcXAmIfNWRGkhYE4LcBANoQE8sFmiYQzx3gI+kW+HR6V7Q8//qiokeNv78WvBQPwkKZ8FIyCUTAKRgFWAACKBE/i2S+XHwAAAABJRU5ErkJggg==\",\"orcid\":\"\",\"institution\":\"Heilongjiang University of Science and Technology\",\"correspondingAuthor\":true,\"prefix\":\"\",\"firstName\":\"Jing\",\"middleName\":\"\",\"lastName\":\"Xing\",\"suffix\":\"\"}],\"badges\":[],\"createdAt\":\"2025-02-16 07:38:12\",\"currentVersionCode\":1,\"declarations\":\"\",\"doi\":\"10.21203/rs.3.rs-6039825/v1\",\"doiUrl\":\"https://doi.org/10.21203/rs.3.rs-6039825/v1\",\"draftVersion\":[],\"editorialEvents\":[{\"content\":\"https://doi.org/10.1038/s41598-025-03970-0\",\"type\":\"published\",\"date\":\"2025-07-01T15:57:03+00:00\"}],\"editorialNote\":\"\",\"failedWorkflow\":false,\"files\":[{\"id\":86178894,\"identity\":\"669b3768-b6f1-4642-bffb-6684004f5938\",\"added_by\":\"auto\",\"created_at\":\"2025-07-07 16:09:44\",\"extension\":\"pdf\",\"order_by\":1,\"title\":\"\",\"display\":\"\",\"copyAsset\":false,\"role\":\"manuscript-pdf\",\"size\":725656,\"visible\":true,\"origin\":\"\",\"legend\":\"\",\"description\":\"\",\"filename\":\"manuscriptR11.pdf\",\"url\":\"https://assets-eu.researchsquare.com/files/rs-6039825/v1_covered_0715b54c-230c-45da-8f60-f5b3521f8ee5.pdf\"}],\"financialInterests\":\"No competing interests reported.\",\"formattedTitle\":\"Experimental investigation of the impact of gas generated via coal oxidation in the upstream coal goaf on the subsequent residual coal oxidation process\",\"fulltext\":[],\"fulltextSource\":\"\",\"fullText\":\"\",\"funders\":[],\"hasAdminPriorityOnWorkflow\":false,\"hasManuscriptDocX\":false,\"hasOptedInToPreprint\":true,\"hasPassedJournalQc\":\"\",\"hasAnyPriority\":false,\"hideJournal\":false,\"highlight\":\"\",\"institution\":\"\",\"isAcceptedByJournal\":true,\"isAuthorSuppliedPdf\":true,\"isDeskRejected\":\"\",\"isHiddenFromSearch\":false,\"isInQc\":false,\"isInWorkflow\":false,\"isPdf\":true,\"isPdfUpToDate\":true,\"isWithdrawnOrRetracted\":false,\"journal\":{\"display\":true,\"email\":\"info@researchsquare.com\",\"identity\":\"scientific-reports\",\"isNatureJournal\":false,\"hasQc\":true,\"allowDirectSubmit\":false,\"externalIdentity\":\"scirep\",\"sideBox\":\"Learn more about [Scientific Reports](http://www.nature.com/srep/)\",\"snPcode\":\"\",\"submissionUrl\":\"\",\"title\":\"Scientific Reports\",\"twitterHandle\":\"\",\"acdcEnabled\":true,\"dfaEnabled\":true,\"editorialSystem\":\"stoa\",\"reportingPortfolio\":\"Scientific Reports\",\"inReviewEnabled\":true,\"inReviewRevisionsEnabled\":true},\"keywords\":\"Continuous air leakage field, Airflow path, Oxidation, Heat release, Variations\",\"lastPublishedDoi\":\"10.21203/rs.3.rs-6039825/v1\",\"lastPublishedDoiUrl\":\"https://doi.org/10.21203/rs.3.rs-6039825/v1\",\"license\":{\"name\":\"CC BY 4.0\",\"url\":\"https://creativecommons.org/licenses/by/4.0/\"},\"manuscriptAbstract\":\"\\u003cp\\u003eFor large-scale goaf with a continuous air leakage flow field, it is imperative to elucidate the influences of the upstream airflow after coal oxidation on the downstream O\\u003csub\\u003e2\\u003c/sub\\u003e consumption, heat release. In this paper, the temperature rise, O\\u003csub\\u003e2\\u003c/sub\\u003e consumption, gas production, and heat release characteristics of coal along the direction of the airflow are analyzed in an experimental study on coal oxidation conducted in a 900 mm long coal sample tank utilizing program-controlled heating. The results suggest that as the temperature of the coal increases to 70\\u0026ndash;120\\u0026deg;C, there is a minimal difference in the O\\u003csub\\u003e2\\u003c/sub\\u003e consumption rate between the inflow and middle sections, and this rate is significantly lower compared to that in the outflow section. After the temperature of the coal surpasses 120\\u0026deg;C, the O\\u003csub\\u003e2\\u003c/sub\\u003e consumption and heat release in the inflow section reach their peak values. In contrast, at the same temperature, both the O\\u003csub\\u003e2\\u003c/sub\\u003e consumption and heat release in the middle section exceed those in the outflow section. Moreover, if the O\\u003csub\\u003e2\\u003c/sub\\u003e concentration of the inflow into the outflow section drops below 14.1%, this leads to a significant decrease in the CO production rate. The O\\u003csub\\u003e2\\u003c/sub\\u003e consumption and heat release rates in the three sections are influenced by different factors. In the inflow section, the temperature and CO generation play significant roles. The middle section is affected by the incoming O\\u003csub\\u003e2\\u003c/sub\\u003e concentration, CO production, and temperature. The outflow section is influenced by the incoming O\\u003csub\\u003e2\\u003c/sub\\u003e, CO, and CO\\u003csub\\u003e2\\u003c/sub\\u003e concentrations and the CO\\u003csub\\u003e2\\u003c/sub\\u003e generation.\\u003c/p\\u003e\",\"manuscriptTitle\":\"Experimental investigation of the impact of gas generated via coal oxidation in the upstream coal goaf on the subsequent residual coal oxidation process\",\"msid\":\"\",\"msnumber\":\"\",\"nonDraftVersions\":[{\"code\":1,\"date\":\"2025-04-14 11:55:01\",\"doi\":\"10.21203/rs.3.rs-6039825/v1\",\"editorialEvents\":[{\"type\":\"communityComments\",\"content\":0},{\"type\":\"decision\",\"content\":\"Revision requested\",\"date\":\"2025-04-17T04:58:39+00:00\",\"index\":\"\",\"fulltext\":\"\"},{\"type\":\"editorInvitedReview\",\"content\":\"\",\"date\":\"2025-04-16T11:15:12+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"editorInvitedReview\",\"content\":\"\",\"date\":\"2025-04-13T07:40:04+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewerAgreed\",\"content\":\"328471852620622985018300264874594275469\",\"date\":\"2025-04-13T07:30:47+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewerAgreed\",\"content\":\"18607682816357495269289650924187957779\",\"date\":\"2025-04-11T15:41:30+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewerAgreed\",\"content\":\"254718950155722481980517411323393428714\",\"date\":\"2025-04-11T11:43:33+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewerAgreed\",\"content\":\"163400975622497992338335857301053532673\",\"date\":\"2025-04-11T09:34:49+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewerAgreed\",\"content\":\"326882407090108187839405197169851341706\",\"date\":\"2025-04-11T08:51:53+00:00\",\"index\":\"hide\",\"fulltext\":\"\"},{\"type\":\"reviewersInvited\",\"content\":\"\",\"date\":\"2025-04-11T07:15:08+00:00\",\"index\":\"\",\"fulltext\":\"\"},{\"type\":\"checksComplete\",\"content\":\"\",\"date\":\"2025-04-11T06:44:37+00:00\",\"index\":\"\",\"fulltext\":\"\"},{\"type\":\"submitted\",\"content\":\"Scientific Reports\",\"date\":\"2025-03-31T14:42:16+00:00\",\"index\":\"\",\"fulltext\":\"\"}],\"status\":\"published\",\"journal\":{\"display\":true,\"email\":\"info@researchsquare.com\",\"identity\":\"scientific-reports\",\"isNatureJournal\":false,\"hasQc\":true,\"allowDirectSubmit\":false,\"externalIdentity\":\"scirep\",\"sideBox\":\"Learn more about [Scientific Reports](http://www.nature.com/srep/)\",\"snPcode\":\"\",\"submissionUrl\":\"\",\"title\":\"Scientific Reports\",\"twitterHandle\":\"\",\"acdcEnabled\":true,\"dfaEnabled\":true,\"editorialSystem\":\"stoa\",\"reportingPortfolio\":\"Scientific Reports\",\"inReviewEnabled\":true,\"inReviewRevisionsEnabled\":true}}],\"origin\":\"\",\"ownerIdentity\":\"cd7528a0-a7af-477a-88c6-c3a1cfbdda75\",\"owner\":[],\"postedDate\":\"April 14th, 2025\",\"published\":true,\"recentEditorialEvents\":[],\"rejectedJournal\":[],\"revision\":\"\",\"amendment\":\"\",\"status\":\"published-in-journal\",\"subjectAreas\":[{\"id\":47081010,\"name\":\"Physical sciences/Physics/Statistical physics thermodynamics and nonlinear dynamics/Thermodynamics\"},{\"id\":47081011,\"name\":\"Physical sciences/Energy science and technology/Fossil fuels/Coal\"},{\"id\":47081012,\"name\":\"Physical sciences/Energy science and technology/Carbon capture and storage\"}],\"tags\":[],\"updatedAt\":\"2025-07-07T15:59:53+00:00\",\"versionOfRecord\":{\"articleIdentity\":\"rs-6039825\",\"link\":\"https://doi.org/10.1038/s41598-025-03970-0\",\"journal\":{\"identity\":\"scientific-reports\",\"isVorOnly\":false,\"title\":\"Scientific Reports\"},\"publishedOn\":\"2025-07-01 15:57:03\",\"publishedOnDateReadable\":\"July 1st, 2025\"},\"versionCreatedAt\":\"2025-04-14 11:55:01\",\"video\":\"\",\"vorDoi\":\"10.1038/s41598-025-03970-0\",\"vorDoiUrl\":\"https://doi.org/10.1038/s41598-025-03970-0\",\"workflowStages\":[]},\"version\":\"v1\",\"identity\":\"rs-6039825\",\"journalConfig\":\"researchsquare\"},\"__N_SSP\":true},\"page\":\"/article/[identity]/[[...version]]\",\"query\":{\"redirect\":\"/article/rs-6039825\",\"identity\":\"rs-6039825\",\"version\":[\"v1\"]},\"buildId\":\"XKTyCvWXoU3ODBz1xrDgd\",\"isFallback\":false,\"isExperimentalCompile\":false,\"dynamicIds\":[84888],\"gssp\":true,\"scriptLoader\":[]}","source_license":"CC-BY-4.0","license_restricted":false}