{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T01:28:36Z","timestamp":1783387716411,"version":"3.54.6"},"reference-count":23,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T00:00:00Z","timestamp":1653609600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>The 11101 working face of Qipanjing Mine was taken as the research object to explore the dynamic change law of the spontaneous combustion of the remaining coal in the gob-side entry retaining goaf area. A sealed oxygen consumption experiment was conducted to determine the (critical) oxygen volume fraction in the suffocation zone and continuous oxygen consumption rate of coal samples. The parameters of the working face were measured on site, and the air volume fraction in the goaf was monitored using a beam tube. Considering upward ventilation and the effect of gravity, a UDF control program for the falling medium in the gob-side entry retaining goaf was written. Based on the experimental results, a control program for the continuous oxygen consumption rate of the remnant coal was compiled, the dynamic distribution of the flow field in the gob-side entry retaining goaf was simulated with different advancing positions and air leakage at the working face, and a prediction model for the spontaneous combustion danger area was established. Finally, fire prevention measures via grouting in the return air lane side and nitrogen injection in the retaining lane side were put forward. The results showed that with the variation in the advancing position of the working face or in the air leakage of the air intake lane, the range of the natural hazardous area of the gob-side entry retaining goaf presents a distribution with a power function<jats:italic>S<\/jats:italic><jats:sub><jats:italic>F<\/jats:italic><\/jats:sub>=<jats:italic>x<\/jats:italic><jats:sup><jats:italic>n<\/jats:italic><\/jats:sup><jats:italic>+b<\/jats:italic>(0 &lt;<jats:italic>n<\/jats:italic>&lt; 1). The theoretically proposed fire-fighting measures can effectively reduce the risk of spontaneous combustion of coal.<\/jats:p>","DOI":"10.1371\/journal.pone.0267631","type":"journal-article","created":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T17:28:33Z","timestamp":1653672513000},"page":"e0267631","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":18,"title":["Dynamic distribution and prevention of spontaneous combustion of coal in gob-side entry retaining goaf"],"prefix":"10.1371","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0622-8730","authenticated-orcid":true,"given":"Dongjie","family":"Hu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zongxiang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2022,5,27]]},"reference":[{"key":"pone.0267631.ref001","unstructured":"Pan ES, Chairman (Dean) and Party Secretary of State Grid Economic and Technological Research Institute Co., Ltd. Supporting the Construction of \"Three Types and Two Networks\" and Promoting Energy Transformation and Development [N]. State Grid News, 2019-12-05 (003)."},{"issue":"3","key":"pone.0267631.ref002","article-title":"Deepening Supply-Side Structural Reforms in Coal Power with a Power Market","volume":"57","author":"JH Yuan","year":"2021","journal-title":"Emerging Markets Finance and Trade"},{"issue":"8","key":"pone.0267631.ref003","article-title":"A New Gob-Side Entry Layout Method for Two-Entry Longwall Systems","volume":"11","author":"W Rui","year":"2018","journal-title":"Energies"},{"issue":"07","key":"pone.0267631.ref004","first-page":"20","article-title":"Study on spontaneous combustion law in gob-out area of gob-side entry retaining with roof cutting","volume":"45","author":"YB Hao","year":"2021","journal-title":"Shanxi Coking Coal Technology"},{"issue":"03","key":"pone.0267631.ref005","first-page":"28","article-title":"Study on the dangerous area of spontaneous combustion in goaf of \"Y\" ventilation working face","volume":"43","author":"X. An","year":"2019","journal-title":"Shanxi Coking Coal Technology"},{"issue":"1","key":"pone.0267631.ref006","first-page":"113","article-title":"Theory of roofing and short-walled beam in longwall mining and its 110 construction method-the third mining science and technology reform","volume":"12","author":"MC He","year":"2017","journal-title":"Coal Science and Technology"},{"issue":"4","key":"pone.0267631.ref007","first-page":"120","article-title":"Dynamic influence of air supply on spontaneous combustion in goaf and fire prevention technology","volume":"29","author":"QJ Qi","year":"2019","journal-title":"Chinese Journal of Safety Sciences"},{"issue":"5","key":"pone.0267631.ref008","first-page":"455","article-title":"Research progress of coal spontaneous combustion mechanism and prediction theory","volume":"19","author":"J Deng","year":"2003","journal-title":"Journal of Liaoning University of Engineering Science"},{"key":"pone.0267631.ref009","doi-asserted-by":"crossref","first-page":"116524","DOI":"10.1016\/j.fuel.2019.116524","article-title":"The character of free radical reaction in coal low-temperature oxidation with different oxygen concentration","volume":"262","author":"Z Buzhuang","year":"2020","journal-title":"Fuel"},{"issue":"4","key":"pone.0267631.ref010","first-page":"66","article-title":"Change of limit parameters of spontaneous combustion of residual coal in goaf and determination of dangerous area","volume":"47","author":"F. Zhang","year":"2020","journal-title":"Mining Safety and Environmental Protection"},{"issue":"01","key":"pone.0267631.ref011","first-page":"54","article-title":"Dynamic numerical simulation of coal spontaneous combustion in goaf of fully mechanized top-coal caving face","author":"H. Wen","year":"2002","journal-title":"Acta Coal Sinica"},{"issue":"04","key":"pone.0267631.ref012","first-page":"600","article-title":"Analysis of \"three zones\" of goaf spontaneous combustion based on Matlab","volume":"35","author":"MG Yu","year":"2010","journal-title":"Journal of Coal Science"},{"issue":"05","key":"pone.0267631.ref013","first-page":"2030","article-title":"Study on the risk of spontaneous combustion in goaf based on closed oxygen consumption test","volume":"21","author":"ZX Li","year":"2021","journal-title":"Journal of Safety and Environment"},{"key":"pone.0267631.ref014","first-page":"1","article-title":"Distribution characteristics of spontaneous combustion zone in gob-out area with roof-cutting gob-side entry retaining and spraying plugging and fire prevention technology","author":"HW Liu","journal-title":"Journal of Mining and Safety Engineering"},{"key":"pone.0267631.ref015","doi-asserted-by":"crossref","DOI":"10.4028\/b-a3BzKV","article-title":"The Stability Control Technology of Crosscut while Mining without Coal Pillar in Step Seam","volume":"1446","author":"YF Wang","year":"2011","journal-title":"Applied Mechanics and Materials"},{"issue":"4","key":"pone.0267631.ref016","first-page":"511","article-title":"Research on mining technology without coal pillar in protective layer of Baijiao Mine","volume":"28","author":"Zhang Gf","year":"2011","journal-title":"Journal of Mining and Safety Engineering"},{"issue":"02","key":"pone.0267631.ref017","first-page":"273","article-title":"Improvement of coal oxidation experiment accuracy and closed oxygen consumption experiment method","volume":"46","author":"ZX Li","year":"2017","journal-title":"Journal of China University of Mining and Technology"},{"issue":"08","key":"pone.0267631.ref018","first-page":"110115","article-title":"Experimental study on the effect of oxygen concentration on oxygen consumption rate of loose coal","volume":"45","author":"HQ Zhu","year":"2013","journal-title":"Coal Engineering"},{"issue":"02","key":"pone.0267631.ref019","first-page":"164","article-title":"Analysis and experimental study on oxygen consumption rate of spontaneous combustion coal","author":"SG LI","year":"1996","journal-title":"Journal of Shandong Institute of Mining and Technology"},{"issue":"03","key":"pone.0267631.ref020","first-page":"63","article-title":"Study on the variation law of coal-oxygen recombination rate","author":"JC Xu","year":"2000","journal-title":"Coal Conversion"},{"issue":"03","key":"pone.0267631.ref021","first-page":"484","article-title":"Distribution characteristics of spontaneous combustion in goaf based on \"O\" caving and uneven oxygen consumption","volume":"37","author":"ZX Li","year":"2012","journal-title":"Journal of Coal Science"},{"issue":"03","key":"pone.0267631.ref022","first-page":"931","article-title":"Numerical simulation of multi-field distribution characteristics of goaf based on three-dimensional \"O\" circle","volume":"17","author":"GC Gao","year":"2017","journal-title":"Journal of Safety and Environment"},{"issue":"02","key":"pone.0267631.ref023","first-page":"42","article-title":"Simulation test study on nitrogen injection fire prevention and extinguishing in fully mechanized top-coal caving goaf","author":"XR Luo","year":"1997","journal-title":"Journal of China University of Mining and Technology"}],"container-title":["PLOS ONE"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0267631","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,9,26]],"date-time":"2024-09-26T00:09:15Z","timestamp":1727309355000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0267631"}},"subtitle":[],"editor":[{"given":"Hongbing","family":"Ding","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2022,5,27]]},"references-count":23,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2022,5,27]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0267631","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,5,27]]}}}