Stability analysis of underground openings for extraction of natural stone
Extraction of natural stone is usually carried out in surface quarries. Underground excavation is not a frequently used method. Due to the restrictive environmental legislature and limited stores of natural stone, underground extraction has become quite an interestingalternative. Dimensions of under...
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| Format: | Article |
| Language: | English |
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Geological Survey of Slovenia
2003-06-01
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| Series: | Geologija |
| Subjects: | |
| Online Access: | http://www.geologija-revija.si/dokument.aspx?id=586 |
| _version_ | 1797945302652551168 |
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| author | Karmen Fifer Bizjak |
| author_facet | Karmen Fifer Bizjak |
| author_sort | Karmen Fifer Bizjak |
| collection | DOAJ |
| description | Extraction of natural stone is usually carried out in surface quarries. Underground excavation is not a frequently used method. Due to the restrictive environmental legislature and limited stores of natural stone, underground extraction has become quite an interestingalternative. Dimensions of underground openings are determined with stability analyses.Prior to starting a numerical analysis of a large underground opening it is very important to determine the mechanism of failure and set up a proper numerical model. The continuum method is usually used in rock mechanics. A disadvantage of this calculation is that it cannotbe applied to a large number of joints. Other methods are preferred, such as the numerical discrete method, which allows joint systems to be involved into calculations. The most probable failure of rock with several joint systems is block sliding. In the example of themarble of Hotavlje both methods were used. It was established that the continuum method is convenient for the global stability prediction of the underground opening. Further discretemethod enable the block stability calculation. The analytical block analysis is still accurate for the a stability calculation of single block. The prerequisite for a good numerical analysis is sufficient quality data on geomechanical properties of rock. In-situ tests, laboratory tests and geotechnical measurements on the site are therefore necessary. Optimum dimensions of underground chambers in the Quarry of Hotavlje were calculated by using several numericalmodels, and the maximum chamber width of 12 m was obtained. |
| first_indexed | 2024-04-10T20:53:06Z |
| format | Article |
| id | doaj.art-1c26805585364d8798342dc13e9d01cc |
| institution | Directory Open Access Journal |
| issn | 0016-7789 1854-620X |
| language | English |
| last_indexed | 2024-04-10T20:53:06Z |
| publishDate | 2003-06-01 |
| publisher | Geological Survey of Slovenia |
| record_format | Article |
| series | Geologija |
| spelling | doaj.art-1c26805585364d8798342dc13e9d01cc2023-01-23T08:10:16ZengGeological Survey of SloveniaGeologija0016-77891854-620X2003-06-01461167174Stability analysis of underground openings for extraction of natural stoneKarmen Fifer BizjakExtraction of natural stone is usually carried out in surface quarries. Underground excavation is not a frequently used method. Due to the restrictive environmental legislature and limited stores of natural stone, underground extraction has become quite an interestingalternative. Dimensions of underground openings are determined with stability analyses.Prior to starting a numerical analysis of a large underground opening it is very important to determine the mechanism of failure and set up a proper numerical model. The continuum method is usually used in rock mechanics. A disadvantage of this calculation is that it cannotbe applied to a large number of joints. Other methods are preferred, such as the numerical discrete method, which allows joint systems to be involved into calculations. The most probable failure of rock with several joint systems is block sliding. In the example of themarble of Hotavlje both methods were used. It was established that the continuum method is convenient for the global stability prediction of the underground opening. Further discretemethod enable the block stability calculation. The analytical block analysis is still accurate for the a stability calculation of single block. The prerequisite for a good numerical analysis is sufficient quality data on geomechanical properties of rock. In-situ tests, laboratory tests and geotechnical measurements on the site are therefore necessary. Optimum dimensions of underground chambers in the Quarry of Hotavlje were calculated by using several numericalmodels, and the maximum chamber width of 12 m was obtained.http://www.geologija-revija.si/dokument.aspx?id=586numerical modelrock mechanicsunderground openings |
| spellingShingle | Karmen Fifer Bizjak Stability analysis of underground openings for extraction of natural stone Geologija numerical model rock mechanics underground openings |
| title | Stability analysis of underground openings for extraction of natural stone |
| title_full | Stability analysis of underground openings for extraction of natural stone |
| title_fullStr | Stability analysis of underground openings for extraction of natural stone |
| title_full_unstemmed | Stability analysis of underground openings for extraction of natural stone |
| title_short | Stability analysis of underground openings for extraction of natural stone |
| title_sort | stability analysis of underground openings for extraction of natural stone |
| topic | numerical model rock mechanics underground openings |
| url | http://www.geologija-revija.si/dokument.aspx?id=586 |
| work_keys_str_mv | AT karmenfiferbizjak stabilityanalysisofundergroundopeningsforextractionofnaturalstone |