Structural quantification of multi-thick hard roof and strong ground pressure control in large mining height stope: A case study

Structural quantification of multi-thick hard roof and strong ground pressure control in large mining height stope: A case study | 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 Research Article Structural quantification of multi-thick hard roof and strong ground pressure control in large mining height stope: A case study Yangbo Lu, Shaohong Yan, Kunyou Zhou, Chenxi Zhang, Yi Zhou This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5761153/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 27 May, 2025 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted 10 You are reading this latest preprint version Abstract The mining of deep large-height longwall faces leads to frequent occurrences of strong ground pressure, at the same time, there are multi-thick hard rock strata in the roof of the longwall face, therefore, it is important to master the fracture quantification characteristics of multi-thick hard roof in large mining height stope for control of strong ground pressure. This study takes the 30202 longwall face of Muduchaideng Coal Mine as the case study. Based on the structure characteristics of multi-thick hard rock strata, which obtained by numerical simulation experiment, the fracture mechanical mechanism of multi-thick hard roof under different structures was obtained. Through numerical simulation experiment and microseismic monitoring data, it is obtained that the roof range that produce stress on the longwall face support is the key strata III and underlying rock strata, and the fracture parameters of multi-thick hard roof were obtained by the mechanical model of overhanging fracture of thick hard rock strata and the structural quantification model of multi-thick hard rock roof of 30202 longwall face is established, combined with microseismic monitoring data, the energy evolution law of multi-thick hard roof fracture was obtained and the method of long-hole hydraulic fracturing of thick hard rock strata was proposed to control of strong ground pressure, in which make the phenomenon of strong ground pressure is obviously reduced. multi-thick hard rock strata strong ground pressure numerical simulation experiment on-site measurement Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 27 May, 2025 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted Editorial decision: Accepted 09 May, 2025 Reviews received at journal 02 May, 2025 Reviews received at journal 28 Apr, 2025 Reviewers agreed at journal 28 Apr, 2025 Reviewers agreed at journal 27 Apr, 2025 Reviews received at journal 27 Apr, 2025 Reviewers agreed at journal 27 Apr, 2025 Reviewers invited by journal 27 Apr, 2025 Submission checks completed at journal 15 Apr, 2025 First submitted to journal 02 Apr, 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-5761153","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":448996747,"identity":"7bced21d-d4bb-431b-b0dd-ed2b737e2c6f","order_by":0,"name":"Yangbo 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