Stress Distribution in a Coal Seam before and after Bump Initiation
This paper deals with to the behaviour of open rock that occurs, for example, during longwall mining in coal mines, in deep tunnel, or shaft excavation.Longwall instability leads to extrusion of rock mass into an open space. This effect is mostly referred to as a bump, or a rock burst. For bumps to...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2001-01-01
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| Series: | Acta Polytechnica |
| Subjects: | |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/260 |
| _version_ | 1818932423754252288 |
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| author | J. Vacek |
| author_facet | J. Vacek |
| author_sort | J. Vacek |
| collection | DOAJ |
| description | This paper deals with to the behaviour of open rock that occurs, for example, during longwall mining in coal mines, in deep tunnel, or shaft excavation.Longwall instability leads to extrusion of rock mass into an open space. This effect is mostly referred to as a bump, or a rock burst. For bumps to occur, the rock has to possess certain particular rock burst properties leading to accumulation of energy and the potential to release this energy. Such materials may be brittle, or the bumps may arise at the interfacial zones of two parts of the rock, that have principally different material properties.The solution is based on experimental and mathematical modelling. These two methods have to allow the problem to be studied on the basis of three presumptions: – the solution must be time dependent – the solution must allow the creation of crack in the rock mass – the solution must allow an extrusion of rock into an open space (bump effect) |
| first_indexed | 2024-12-20T04:32:15Z |
| format | Article |
| id | doaj.art-5cfca06c5c6044adac50c35518a75561 |
| institution | Directory Open Access Journal |
| issn | 1210-2709 1805-2363 |
| language | English |
| last_indexed | 2024-12-20T04:32:15Z |
| publishDate | 2001-01-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj.art-5cfca06c5c6044adac50c35518a755612022-12-21T19:53:21ZengCTU Central LibraryActa Polytechnica1210-27091805-23632001-01-01414-5260Stress Distribution in a Coal Seam before and after Bump InitiationJ. VacekThis paper deals with to the behaviour of open rock that occurs, for example, during longwall mining in coal mines, in deep tunnel, or shaft excavation.Longwall instability leads to extrusion of rock mass into an open space. This effect is mostly referred to as a bump, or a rock burst. For bumps to occur, the rock has to possess certain particular rock burst properties leading to accumulation of energy and the potential to release this energy. Such materials may be brittle, or the bumps may arise at the interfacial zones of two parts of the rock, that have principally different material properties.The solution is based on experimental and mathematical modelling. These two methods have to allow the problem to be studied on the basis of three presumptions: – the solution must be time dependent – the solution must allow the creation of crack in the rock mass – the solution must allow an extrusion of rock into an open space (bump effect)https://ojs.cvut.cz/ojs/index.php/ap/article/view/260rock burstsbumpsminingrock mechanicsmathematics and physical modelling |
| spellingShingle | J. Vacek Stress Distribution in a Coal Seam before and after Bump Initiation Acta Polytechnica rock bursts bumps mining rock mechanics mathematics and physical modelling |
| title | Stress Distribution in a Coal Seam before and after Bump Initiation |
| title_full | Stress Distribution in a Coal Seam before and after Bump Initiation |
| title_fullStr | Stress Distribution in a Coal Seam before and after Bump Initiation |
| title_full_unstemmed | Stress Distribution in a Coal Seam before and after Bump Initiation |
| title_short | Stress Distribution in a Coal Seam before and after Bump Initiation |
| title_sort | stress distribution in a coal seam before and after bump initiation |
| topic | rock bursts bumps mining rock mechanics mathematics and physical modelling |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/260 |
| work_keys_str_mv | AT jvacek stressdistributioninacoalseambeforeandafterbumpinitiation |