ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY
Relevance. More than 75 % of underground mine workings are supported by anchorage nowadays. In the case of long-term mine workings maintenance the deformations of surrounding rock massif and anchoring elements occur. The surrounding rock massif typical forms deformations determination in order to de...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2021-11-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/3435/2598 |
| _version_ | 1818471872775323648 |
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| author | Sergey S. Tsibaev Alexey A. Renev Qing-duo Wan Feng-hai Yu |
| author_facet | Sergey S. Tsibaev Alexey A. Renev Qing-duo Wan Feng-hai Yu |
| author_sort | Sergey S. Tsibaev |
| collection | DOAJ |
| description | Relevance. More than 75 % of underground mine workings are supported by anchorage nowadays. In the case of long-term mine workings maintenance the deformations of surrounding rock massif and anchoring elements occur. The surrounding rock massif typical forms deformations determination in order to develop the design solutions and substantiate anchorage parameters is currently urgent scientific and practical task. Especially it is important in case of mine workings support repair or recovery stages. The main aim is mine working anchorage design solutions and parameters substantiate during the repair and recovery stages. Methods: field measurements, statistical processing of results. Results. The paper introduces the description, causes of occurrence and manifestation forms of geomechanical processes in surrounding rock massif supported by anchorage. Based on the long-term field measurements six forms of rock massif typical deformations have been established.The roof bridging begins with decompaction of rocks, which causes rocks stratification under the influence of gravity. This results in cavities formation and lower layers separation from upper ones. Because of formation of the plastic deformation zone around mine workings the extraction and dumping coal from walls occur. Coal and rocks are in an unbound state and are kept in balance due to the forces of friction and resistance of the support in the zones of plastic deformations. Its width depends on many factors such as the working width and the internal friction angle. The coefficient of stress concentration in the walls rises up due to growth of mine working widht. |
| first_indexed | 2024-04-14T03:57:49Z |
| format | Article |
| id | doaj.art-0e86b2089cb24a88a787f5a769cc3e8f |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-04-14T03:57:49Z |
| publishDate | 2021-11-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-0e86b2089cb24a88a787f5a769cc3e8f2022-12-22T02:13:42ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302021-11-013321122323210.18799/24131830/2021/11/3435ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERYSergey S. Tsibaev0Alexey A. Renev1Qing-duo Wan2Feng-hai Yu3T.F. Gorbachev Kuzbass State Technical UniversityT.F. Gorbachev Kuzbass State Technical UniversityShandong University of Science and TechnologyShandong University of Science and TechnologyRelevance. More than 75 % of underground mine workings are supported by anchorage nowadays. In the case of long-term mine workings maintenance the deformations of surrounding rock massif and anchoring elements occur. The surrounding rock massif typical forms deformations determination in order to develop the design solutions and substantiate anchorage parameters is currently urgent scientific and practical task. Especially it is important in case of mine workings support repair or recovery stages. The main aim is mine working anchorage design solutions and parameters substantiate during the repair and recovery stages. Methods: field measurements, statistical processing of results. Results. The paper introduces the description, causes of occurrence and manifestation forms of geomechanical processes in surrounding rock massif supported by anchorage. Based on the long-term field measurements six forms of rock massif typical deformations have been established.The roof bridging begins with decompaction of rocks, which causes rocks stratification under the influence of gravity. This results in cavities formation and lower layers separation from upper ones. Because of formation of the plastic deformation zone around mine workings the extraction and dumping coal from walls occur. Coal and rocks are in an unbound state and are kept in balance due to the forces of friction and resistance of the support in the zones of plastic deformations. Its width depends on many factors such as the working width and the internal friction angle. The coefficient of stress concentration in the walls rises up due to growth of mine working widht.http://izvestiya.tpu.ru/archive/article/view/3435/2598mine workings stabilitymine workings repairanchoragedeformationsdisplacementconvergence |
| spellingShingle | Sergey S. Tsibaev Alexey A. Renev Qing-duo Wan Feng-hai Yu ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY Известия Томского политехнического университета: Инжиниринг георесурсов mine workings stability mine workings repair anchorage deformations displacement convergence |
| title | ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY |
| title_full | ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY |
| title_fullStr | ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY |
| title_full_unstemmed | ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY |
| title_short | ANALYSIS OF DEFORMATION OF TYPICAL FORMS SURROUNDING ROCK MASSIF FOR MINE WORKINGS SUPPORT RECOVERY |
| title_sort | analysis of deformation of typical forms surrounding rock massif for mine workings support recovery |
| topic | mine workings stability mine workings repair anchorage deformations displacement convergence |
| url | http://izvestiya.tpu.ru/archive/article/view/3435/2598 |
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