Structural Characteristics of the Slurry-Filled Receptive Zone in Longwall Goaf Filled with Gangue Slurry

Structural Characteristics of the Slurry-Filled Receptive Zone in Longwall Goaf Filled with Gangue Slurry | 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 Structural Characteristics of the Slurry-Filled Receptive Zone in Longwall Goaf Filled with Gangue Slurry Mengye Zhao, Lei Zhu, Chengyong Liu, Wenzhe Gu, Zhicheng Liu This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7912672/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 08 Dec, 2025 Read the published version in Scientific Reports → Version 1 posted 4 You are reading this latest preprint version Abstract To address the dual challenges of environmentally sustainable coal gangue disposal and the effective utilization of underground mined-out spaces, this study investigates the structural characteristics of goafs that govern the efficiency of gangue slurry filling. An integrated methodology combining theoretical analysis, physical simulation experiments, and field-scale industrial testing was employed to systematically examine the spatial architecture and void distribution within the goaf. The research elucidates the spatial evolution mechanism of overlying strata, which follows a sequential "arch–beam–shell" pattern, leading to the identification of the stable residual "shell" structure as the Slurry-Filled Receptive (SF-R) zone. The key stratum governing slurry migration is defined as the Slurry Movement Control (SM-C) stratum, for which a discriminant criterion is established based on mechanical stiffness, strength, and stratal control principles. The influence of the SM-C stratum on the formation of three distinct structural zones-namely, free accumulation, load-affected, and compacted zones-along both strike and dip directions is clarified. Furthermore, the void distribution within the goaf is quantitatively characterized, revealing that the bulking factor of caved rock decreases with increasing depth and height into the goaf, following a negative logarithmic function. The SF-R zone constitutes a quantifiable and exploitable space for slurry injection, with its structural configuration and porosity primarily regulated by the SM-C stratum. These findings were validated through an industrial application at Huangling No. 2 Coal Mine, where targeted filling was implemented in the overlapping region of the free accumulation and load-affected zones. This study establishes a robust theoretical framework and provides a practical methodology for the design and optimization of high-efficiency gangue slurry filling systems. Physical sciences/Energy science and technology Physical sciences/Engineering Earth and environmental sciences/Environmental sciences Physical sciences/Materials science Gangue slurry filling Slurry-Filled Receptive (SF-R) field Slurry Movement Control (SM-C) stratum Goaf structure Void distribution Physical simulation Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 08 Dec, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 18 Nov, 2025 Editor assigned by journal 18 Nov, 2025 Submission checks completed at journal 06 Nov, 2025 First submitted to journal 05 Nov, 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-7912672","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":540925480,"identity":"f6a11431-0bea-4ccc-8a83-06f49a5ff136","order_by":0,"name":"Mengye Zhao","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAqklEQVRIiWNgGAWjYPACGzk29vYDJGg4wJBmzMdzJoEkLYcT50k4GBCn2nxG8sHPH3PS0tskGBIYflRsI6xF5kZassTBbTa5bdKNBxh7ztwmrEVCIscAqCUtt03mQAIzYxtxWox/HNx2OJ1NIsGAaC1mQFsOJ5CghedZmsXZbWmGbcBAPkicX9iTD9+o3GYjL9/efvDBjwoitKCAAySqHwWjYBSMglGACwAA5tM78pEBzdsAAAAASUVORK5CYII=","orcid":"","institution":"China Coal Energy Research Institute Co.,Ltd","correspondingAuthor":true,"prefix":"","firstName":"Mengye","middleName":"","lastName":"Zhao","suffix":""},{"id":540925481,"identity":"2d268d54-389a-40e0-b2e8-3395dd6321f1","order_by":1,"name":"Lei Zhu","email":"","orcid":"","institution":"China Coal Energy Research Institute Co.,Ltd","correspondingAuthor":false,"prefix":"","firstName":"Lei","middleName":"","lastName":"Zhu","suffix":""},{"id":540925482,"identity":"1b7ab4e9-ae93-463e-8bb8-ad43b8b5d54e","order_by":2,"name":"Chengyong Liu","email":"","orcid":"","institution":"China Coal Energy Research Institute Co.,Ltd","correspondingAuthor":false,"prefix":"","firstName":"Chengyong","middleName":"","lastName":"Liu","suffix":""},{"id":540925483,"identity":"f52c1fa4-4e4c-4dce-99b2-327d18bed752","order_by":3,"name":"Wenzhe Gu","email":"","orcid":"","institution":"China Coal Energy Research Institute Co.,Ltd","correspondingAuthor":false,"prefix":"","firstName":"Wenzhe","middleName":"","lastName":"Gu","suffix":""},{"id":540925484,"identity":"a7e22692-9c25-42f4-9b68-f6f4ec42d00c","order_by":4,"name":"Zhicheng Liu","email":"","orcid":"","institution":"China Coal Energy Research Institute Co.,Ltd","correspondingAuthor":false,"prefix":"","firstName":"Zhicheng","middleName":"","lastName":"Liu","suffix":""}],"badges":[],"createdAt":"2025-10-21 09:08:33","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7912672/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7912672/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-30546-9","type":"published","date":"2025-12-08T15:59:34+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":95657000,"identity":"989edf7a-8ed4-4e6c-ba98-bd3ad5c92a93","added_by":"auto","created_at":"2025-11-11 16:19:51","extension":"doc","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":6707200,"visible":true,"origin":"","legend":"","description":"","filename":"Revisedmanuscript25.11clear.doc","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/20e531aba3d35e6345c49af4.doc"},{"id":95638925,"identity":"060f35cf-000c-46a5-8326-a49b0eadb27a","added_by":"auto","created_at":"2025-11-11 13:06:50","extension":"json","order_by":1,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":7137,"visible":true,"origin":"","legend":"","description":"","filename":"1c59ebb3524d4e5a8c9d77923f9054d8.json","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/b1d04de5ea40cd5c1dabf99d.json"},{"id":95638927,"identity":"b1bb30eb-d9f2-4071-a1cc-fe543814f881","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"xml","order_by":2,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":113135,"visible":true,"origin":"","legend":"","description":"","filename":"1c59ebb3524d4e5a8c9d77923f9054d81enriched.xml","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/3920f1f99aae6ccfa166fdff.xml"},{"id":95638926,"identity":"9a85855f-2e1c-4812-a3f0-90e6f0e8c99a","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"wmf","order_by":3,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1065510,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage1.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/1b9fd94a7a4a0647e96a98da.wmf"},{"id":95657365,"identity":"25f40622-d380-4de9-b449-8a3e982938dc","added_by":"auto","created_at":"2025-11-11 16:20:42","extension":"png","order_by":4,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":21091,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage10.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/b3c99daaeee5e062aa377744.png"},{"id":95638931,"identity":"5f4d49a8-f52c-4262-8fe8-54a58321674f","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"emf","order_by":5,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":781896,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage11.emf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/7160ee385e07622059e08403.emf"},{"id":95658209,"identity":"6399e06c-4776-4247-bbc1-5ca55a7a3720","added_by":"auto","created_at":"2025-11-11 16:23:44","extension":"jpeg","order_by":6,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":570459,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage12.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/230c5db03b9c5203a3932680.jpeg"},{"id":95657829,"identity":"5346fee6-f59a-4069-87ca-78f472f9e3db","added_by":"auto","created_at":"2025-11-11 16:22:05","extension":"emf","order_by":7,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":93128796,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage13.emf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/3821ffd0fc49fdd5675bbc97.emf"},{"id":95656946,"identity":"2065412f-e295-4d2c-ba67-9265da099ecf","added_by":"auto","created_at":"2025-11-11 16:19:45","extension":"png","order_by":8,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":422767,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage14.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/6bcbc60e3433446807d8dc17.png"},{"id":95638928,"identity":"e9148544-9864-44cc-bd17-0540e9a9d6fb","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"emf","order_by":9,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":69308,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage15.emf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/3a4abff54eae1481eecbd4d2.emf"},{"id":95638933,"identity":"769ca96c-e371-414b-b36d-c0e74e87c335","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"emf","order_by":10,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":360028,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage16.emf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/c5fa7a4ca559726cb2812ae8.emf"},{"id":95638948,"identity":"1e89a5f2-26ea-4127-9a66-0e873a7094c0","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"emf","order_by":11,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":635672,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage17.emf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/ff115282b068ce0511553a66.emf"},{"id":95656955,"identity":"fc0a9561-7213-45d2-8072-aaa24e759f18","added_by":"auto","created_at":"2025-11-11 16:19:47","extension":"jpeg","order_by":12,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":610062,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage18.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/d29a4b50f3c5a70a0bd9603a.jpeg"},{"id":95638937,"identity":"044a1e01-9cd4-4695-ad3e-4eacfc528277","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"wmf","order_by":13,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":337834,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage19.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/673e33f9e09ef184b63e5e6b.wmf"},{"id":95638942,"identity":"5c3e08d9-cfcc-4157-9ebc-77577beed6bc","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"jpeg","order_by":14,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":718076,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage2.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/f26b595f057cf8d3485dc159.jpeg"},{"id":95657900,"identity":"af024a41-f5b5-4ae2-81d2-e07c52714723","added_by":"auto","created_at":"2025-11-11 16:22:23","extension":"jpeg","order_by":15,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":565133,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage3.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/20e785e8baa90ad16841b516.jpeg"},{"id":95638940,"identity":"e69ac75f-d864-4fe7-98fb-9f723c726acd","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"wmf","order_by":16,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":239162,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage4.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/a10c596a3e1aec8c689e57ea.wmf"},{"id":95657895,"identity":"6dec6a2f-69bb-42f8-8706-22c910959206","added_by":"auto","created_at":"2025-11-11 16:22:21","extension":"jpeg","order_by":17,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":542302,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage5.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/a6ccbab2a44f6ac6d4023dbf.jpeg"},{"id":95657973,"identity":"803c2e9e-5b4f-4d44-9df8-3fcb420b0b1e","added_by":"auto","created_at":"2025-11-11 16:22:36","extension":"png","order_by":18,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":59919,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage6.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/06de2778c3a47e877295713c.png"},{"id":95638945,"identity":"9c04ee51-28e9-4cca-a04e-dfcc57513cf5","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"jpeg","order_by":19,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":406059,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage7.jpeg","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/0b3f337309bf83440ce1e55d.jpeg"},{"id":95638975,"identity":"455743f5-1bad-44c3-af7a-7b51edbd1230","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"wmf","order_by":20,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":319942,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage8.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/4fa48b6c1e5cc822e42836e9.wmf"},{"id":95658081,"identity":"b912a829-9ce9-4c94-99c9-cc314b111b97","added_by":"auto","created_at":"2025-11-11 16:22:53","extension":"wmf","order_by":21,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":636880,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage9.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/7a04f02e0425fc9d9f5c3a44.wmf"},{"id":95657430,"identity":"dd50a8ab-cb45-41ed-a389-d3a78a4cd80b","added_by":"auto","created_at":"2025-11-11 16:20:49","extension":"wmf","order_by":22,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":1065510,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage1.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/1a331b96ac3470cf8a081ae4.wmf"},{"id":95638952,"identity":"be7080ed-766c-48c3-9b21-433f9a481f37","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"wmf","order_by":23,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":319942,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage8.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/15e82a758eff24c88f14dabf.wmf"},{"id":95658008,"identity":"df5dac99-7b28-4fe8-82c5-64511d6a6871","added_by":"auto","created_at":"2025-11-11 16:22:41","extension":"wmf","order_by":24,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":636880,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage9.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/30a926f872ee18226f649181.wmf"},{"id":95658012,"identity":"389a79d3-63f3-415c-a18a-fff837bf5244","added_by":"auto","created_at":"2025-11-11 16:22:41","extension":"wmf","order_by":25,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":337834,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage19.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/817cad6d5e9dca487cf90d98.wmf"},{"id":95657559,"identity":"a74fa5ec-bbef-4c57-8d3f-b897b6933eb6","added_by":"auto","created_at":"2025-11-11 16:21:16","extension":"wmf","order_by":26,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":239162,"visible":true,"origin":"","legend":"","description":"","filename":"floatimage4.wmf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/bd9f2ecf65bc935f9f0c25a1.wmf"},{"id":95638953,"identity":"beead408-73ff-4c92-90ca-459b96ae510e","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"png","order_by":27,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":366,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/e57a9eccf806571c5b287bff.png"},{"id":95656898,"identity":"adfbfe2f-0c86-46ad-b14a-2944d9c65de5","added_by":"auto","created_at":"2025-11-11 16:19:41","extension":"png","order_by":28,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":10883,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage10.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/6f2634cdb78508ad33860c25.png"},{"id":95657243,"identity":"e6aa63ba-449a-4f51-8413-790049f60221","added_by":"auto","created_at":"2025-11-11 16:20:20","extension":"png","order_by":29,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":21107,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage11.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/1af522d9e47e3234fcf4eb4f.png"},{"id":95638966,"identity":"a1f9b7ee-3f46-4d7b-979e-6fcf987c6544","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":30,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":95274,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage12.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/2ce586e80d4888e3fb05a066.png"},{"id":95638943,"identity":"6ccb5dd6-e0be-452b-a9de-7273db4643d3","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"png","order_by":31,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":102646,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage13.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/597b5f508fc85d7974592063.png"},{"id":95638965,"identity":"7f7147a0-9890-4316-82a1-c6308aa2f7d2","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":32,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":266023,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage14.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/816a1f820a9d8b2cc0b54cac.png"},{"id":95656959,"identity":"1d9f28c2-cf18-4f87-bcd3-93ca1c970d10","added_by":"auto","created_at":"2025-11-11 16:19:47","extension":"png","order_by":33,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":19795,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage15.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/27f91be694b8a89cf7e5b334.png"},{"id":95638956,"identity":"e7030c4c-0b50-4d40-bae5-c0e39637cd14","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":34,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":78039,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage16.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/4d2e1249c2a0f5718ff92a89.png"},{"id":95638971,"identity":"71f6bae5-8a18-4d8c-967a-5831d038a590","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":35,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":215747,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage17.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/e424543b5244a1695ec6a520.png"},{"id":95656915,"identity":"42089d12-b433-4f13-a41d-b245b13b5890","added_by":"auto","created_at":"2025-11-11 16:19:43","extension":"png","order_by":36,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":247507,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage18.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/43d36cd6bbc5798165367345.png"},{"id":95638957,"identity":"55d31d62-07e2-4b04-8bb6-87b0836cd5be","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":37,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":25614,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage19.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/87a0b13c6a173266f0688647.png"},{"id":95657779,"identity":"b9e69352-3dc0-4de3-a7e7-81a40d01f1e3","added_by":"auto","created_at":"2025-11-11 16:21:57","extension":"png","order_by":38,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":290436,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage2.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/045075513fef11936fba22ac.png"},{"id":95638976,"identity":"42e829ff-0855-4f61-8ff1-7c1471592972","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":39,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":154171,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage3.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/0a1088dccbc9d0b9f42cae49.png"},{"id":95638974,"identity":"2ed3ccc3-d53f-47a4-8133-5d48ddc073d5","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":40,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":35066,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage4.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/5d9eb37c3625ed0b2bbfafe8.png"},{"id":95638977,"identity":"04b3efe9-e458-449f-aef4-2d11737c64d1","added_by":"auto","created_at":"2025-11-11 13:06:53","extension":"png","order_by":41,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":88300,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage5.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/830387bcec397e9215d07409.png"},{"id":95638946,"identity":"2e64f6ea-7c88-48c0-bd3a-bb1475845079","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"png","order_by":42,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":19016,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage6.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/647e3ef57c35bbbc288af437.png"},{"id":95638960,"identity":"165f1448-1d69-4996-9bea-7e4e9eab2788","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":43,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":80364,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage7.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/23097ddf3f46a61d7fc7c5bc.png"},{"id":95638947,"identity":"437e9fec-de4a-4be9-a62e-cf2ad2fc5864","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"png","order_by":44,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":25501,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage8.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/40b9bed347ef339e8b3416a9.png"},{"id":95638949,"identity":"dfb580bd-4899-453c-a5d1-ac0349e726d0","added_by":"auto","created_at":"2025-11-11 13:06:51","extension":"png","order_by":45,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":30291,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage9.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/dc6887396d69e17fd386a4e5.png"},{"id":95657449,"identity":"f44a821f-8cd0-4884-b420-19f2105c9737","added_by":"auto","created_at":"2025-11-11 16:20:53","extension":"png","order_by":46,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":366,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage1.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/761e7604cd6be715e9050a30.png"},{"id":95658091,"identity":"afa4e6fb-f774-4550-8d65-760b4568114e","added_by":"auto","created_at":"2025-11-11 16:22:54","extension":"png","order_by":47,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":25501,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage8.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/f9cab994ece598cd95f96306.png"},{"id":95657842,"identity":"0a15cd75-5016-4989-8e40-047948cd5967","added_by":"auto","created_at":"2025-11-11 16:22:08","extension":"png","order_by":48,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":30291,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage9.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/10d68b495ee572100381df33.png"},{"id":95657903,"identity":"9b35c48f-c6ae-444d-afac-9649827b7a12","added_by":"auto","created_at":"2025-11-11 16:22:23","extension":"png","order_by":49,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":25614,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage19.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/471e414a0a7b6d0266fc7f90.png"},{"id":95638964,"identity":"f0e5c5b6-d151-4c63-bccd-5f0a40db79aa","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"png","order_by":50,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":35066,"visible":true,"origin":"","legend":"","description":"","filename":"Onlinefloatimage4.png","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/dbec1e39796fad2786af30d3.png"},{"id":95638967,"identity":"45562248-3b2f-4a8a-b159-46561bad3d9f","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"xml","order_by":51,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":113690,"visible":true,"origin":"","legend":"","description":"","filename":"1c59ebb3524d4e5a8c9d77923f9054d81structuring.xml","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/8cd928c4e871903aa9dd068e.xml"},{"id":95638969,"identity":"4159cbc0-d2d5-4a15-be4f-983937aa6ac5","added_by":"auto","created_at":"2025-11-11 13:06:52","extension":"html","order_by":52,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":124402,"visible":true,"origin":"","legend":"","description":"","filename":"earlyproof.html","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1/af570652c3e822a40aaac959.html"},{"id":98245207,"identity":"ce401259-aeed-49c1-93c4-217125311c3a","added_by":"auto","created_at":"2025-12-15 16:17:07","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":2483796,"visible":true,"origin":"","legend":"","description":"","filename":"Revisedmanuscript25.11clear.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7912672/v1_covered_62473fe1-6148-488a-a971-f4065b96cefa.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Structural Characteristics of the Slurry-Filled Receptive Zone in Longwall Goaf Filled with Gangue Slurry","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"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":"[email protected]","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":"Gangue slurry filling, Slurry-Filled Receptive (SF-R) field, Slurry Movement Control (SM-C) stratum, Goaf structure, Void distribution, Physical simulation","lastPublishedDoi":"10.21203/rs.3.rs-7912672/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7912672/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eTo address the dual challenges of environmentally sustainable coal gangue disposal and the effective utilization of underground mined-out spaces, this study investigates the structural characteristics of goafs that govern the efficiency of gangue slurry filling. An integrated methodology combining theoretical analysis, physical simulation experiments, and field-scale industrial testing was employed to systematically examine the spatial architecture and void distribution within the goaf. The research elucidates the spatial evolution mechanism of overlying strata, which follows a sequential \"arch\u0026ndash;beam\u0026ndash;shell\" pattern, leading to the identification of the stable residual \"shell\" structure as the Slurry-Filled Receptive (SF-R) zone. The key stratum governing slurry migration is defined as the Slurry Movement Control (SM-C) stratum, for which a discriminant criterion is established based on mechanical stiffness, strength, and stratal control principles. The influence of the SM-C stratum on the formation of three distinct structural zones-namely, free accumulation, load-affected, and compacted zones-along both strike and dip directions is clarified. Furthermore, the void distribution within the goaf is quantitatively characterized, revealing that the bulking factor of caved rock decreases with increasing depth and height into the goaf, following a negative logarithmic function. The SF-R zone constitutes a quantifiable and exploitable space for slurry injection, with its structural configuration and porosity primarily regulated by the SM-C stratum. These findings were validated through an industrial application at Huangling No. 2 Coal Mine, where targeted filling was implemented in the overlapping region of the free accumulation and load-affected zones. This study establishes a robust theoretical framework and provides a practical methodology for the design and optimization of high-efficiency gangue slurry filling systems.\u003c/p\u003e","manuscriptTitle":"Structural Characteristics of the Slurry-Filled Receptive Zone in Longwall Goaf Filled with Gangue Slurry","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-11-11 13:06:46","doi":"10.21203/rs.3.rs-7912672/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2025-11-18T07:05:14+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-11-18T07:03:26+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-11-06T10:34:05+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2025-11-06T01:53:45+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","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":"6bc9f123-dbba-457a-8163-4d638c2201fe","owner":[],"postedDate":"November 11th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":57542565,"name":"Physical sciences/Energy science and technology"},{"id":57542566,"name":"Physical sciences/Engineering"},{"id":57542567,"name":"Earth and environmental sciences/Environmental sciences"},{"id":57542568,"name":"Physical sciences/Materials science"}],"tags":[],"updatedAt":"2025-12-15T16:12:46+00:00","versionOfRecord":{"articleIdentity":"rs-7912672","link":"https://doi.org/10.1038/s41598-025-30546-9","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-12-08 15:59:34","publishedOnDateReadable":"December 8th, 2025"},"versionCreatedAt":"2025-11-11 13:06:46","video":"","vorDoi":"10.1038/s41598-025-30546-9","vorDoiUrl":"https://doi.org/10.1038/s41598-025-30546-9","workflowStages":[]},"version":"v1","identity":"rs-7912672","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7912672","identity":"rs-7912672","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}