Analytical Assessment of Internal Stress in Cemented Paste Backfill
To analytically describe the internal stress in a fill mass made of granular man-made material (cemented paste backfill, CPB), a new 3D effective stress model is developed. The developed model integrates Bishop effective stress principle, water retention relationship, and arching effect. All model p...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6666548 |
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| _version_ | 1849402173097508864 |
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| author | Naifei Liu Liang Cui Yan Wang |
| author_facet | Naifei Liu Liang Cui Yan Wang |
| author_sort | Naifei Liu |
| collection | DOAJ |
| description | To analytically describe the internal stress in a fill mass made of granular man-made material (cemented paste backfill, CPB), a new 3D effective stress model is developed. The developed model integrates Bishop effective stress principle, water retention relationship, and arching effect. All model parameters are determined from measurable experimental data. The uncertainties of the model parameters are examined by sensitivity analysis. A series of model application is conducted to investigate the effects of field conditions on the internal stress in CPB. The obtained results show that the proposed model is able to capture the influence of operation time, stope geometry, and rock/CPB interface properties on the effective stress in CPB. Hence, the developed model can be used as a useful tool for the optimal design of CPB structure. |
| format | Article |
| id | doaj-art-8339d2068bbc420a979bbb0bab15d950 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-8339d2068bbc420a979bbb0bab15d9502025-08-20T03:37:37ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/66665486666548Analytical Assessment of Internal Stress in Cemented Paste BackfillNaifei Liu0Liang Cui1Yan Wang2School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaDepartment of Civil Engineering, Lakehead University, Thunder Bay, Ontario P7B 5E1, CanadaDepartment of Civil Engineering, Lakehead University, Thunder Bay, Ontario P7B 5E1, CanadaTo analytically describe the internal stress in a fill mass made of granular man-made material (cemented paste backfill, CPB), a new 3D effective stress model is developed. The developed model integrates Bishop effective stress principle, water retention relationship, and arching effect. All model parameters are determined from measurable experimental data. The uncertainties of the model parameters are examined by sensitivity analysis. A series of model application is conducted to investigate the effects of field conditions on the internal stress in CPB. The obtained results show that the proposed model is able to capture the influence of operation time, stope geometry, and rock/CPB interface properties on the effective stress in CPB. Hence, the developed model can be used as a useful tool for the optimal design of CPB structure.http://dx.doi.org/10.1155/2020/6666548 |
| spellingShingle | Naifei Liu Liang Cui Yan Wang Analytical Assessment of Internal Stress in Cemented Paste Backfill Advances in Materials Science and Engineering |
| title | Analytical Assessment of Internal Stress in Cemented Paste Backfill |
| title_full | Analytical Assessment of Internal Stress in Cemented Paste Backfill |
| title_fullStr | Analytical Assessment of Internal Stress in Cemented Paste Backfill |
| title_full_unstemmed | Analytical Assessment of Internal Stress in Cemented Paste Backfill |
| title_short | Analytical Assessment of Internal Stress in Cemented Paste Backfill |
| title_sort | analytical assessment of internal stress in cemented paste backfill |
| url | http://dx.doi.org/10.1155/2020/6666548 |
| work_keys_str_mv | AT naifeiliu analyticalassessmentofinternalstressincementedpastebackfill AT liangcui analyticalassessmentofinternalstressincementedpastebackfill AT yanwang analyticalassessmentofinternalstressincementedpastebackfill |