Mathematical modeling of tight roof periodical falling
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| Natura: | Recurso digital |
| Lingua: | inglese |
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Zenodo
2025
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| _version_ | 1866901379678732288 |
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| author | Dnipro University of Technology |
| author_facet | Dnipro University of Technology |
| contents | <p>The paper proposes a method to determine of a coal seam roof <br>falling step basing upon the analysis of stress and strain state of the rock <br>mass area with mine workings formed as a result of coal preparatory and <br>extraction operations. A boundary element method has been applied to <br>define stress and strain state (SSS). Fissuring of enclosing rocks was <br>modeled by means of transversal-isotropic medium. Dependence of<br>destructed rocks zone height within the roof of a seam being mined upon <br>the weakening of the rock mass due to its fissuring and mine working <br>geometry has been determined. Effect of fissility on the periodical roof <br>falling step has been studied. Changes in support loads in the process of <br>stope advance have been determined. A scheme of partial backfilling of the <br>worked out area has been proposed to maintain the support in its working <br>order.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_1051_e3sconf_20186000020 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Mathematical modeling of tight roof periodical falling Dnipro University of Technology Mining Mining <p>The paper proposes a method to determine of a coal seam roof <br>falling step basing upon the analysis of stress and strain state of the rock <br>mass area with mine workings formed as a result of coal preparatory and <br>extraction operations. A boundary element method has been applied to <br>define stress and strain state (SSS). Fissuring of enclosing rocks was <br>modeled by means of transversal-isotropic medium. Dependence of<br>destructed rocks zone height within the roof of a seam being mined upon <br>the weakening of the rock mass due to its fissuring and mine working <br>geometry has been determined. Effect of fissility on the periodical roof <br>falling step has been studied. Changes in support loads in the process of <br>stope advance have been determined. A scheme of partial backfilling of the <br>worked out area has been proposed to maintain the support in its working <br>order.</p> |
| title | Mathematical modeling of tight roof periodical falling |
| topic | Mining Mining |
| url | https://doi.org/10.1051/e3sconf/20186000020 |