Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine
Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit w...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Tehran
2018-12-01
|
| Series: | International Journal of Mining and Geo-Engineering |
| Subjects: | |
| Online Access: | https://ijmge.ut.ac.ir/article_68703_918e47432ce8a81329723fb006b4df06.pdf |
| _version_ | 1811332046902001664 |
|---|---|
| author | Hossain Noferesti Ayyoob Hazegh |
| author_facet | Hossain Noferesti Ayyoob Hazegh |
| author_sort | Hossain Noferesti |
| collection | DOAJ |
| description | Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit wall has not been comprehensively reviewed. In this research, the southwestern wall of the final pit of Sungun Mine investigated by pseudo-static, Newmark and numerical methods. Besides, through the paper, it is tried to explain some of the difficulties in accomplishing and interpretation of results in a dynamic analysis of a mining slope. Pseudo-static analysis revealed that the final pit wall is unsafe against the design earthquake with a high probability of failure. Results of Newmark analysis proved that in the case of design earthquake a large failing region would form. Based on a dynamic numerical analysis of the pit wall, continuous earthquake-induced movements in the forward and downward directions observed, which might be a sign of pit wall instability. The effect of underground water drainage on pit wall stability was investigated in the numerical model. Resulted time histories of the drained pit wall displacements proved that merely water drainage is sufficient for protecting the pit wall against the design earthquake. |
| first_indexed | 2024-04-13T16:30:56Z |
| format | Article |
| id | doaj.art-d950103be8d24b02b2cb4e446db858f0 |
| institution | Directory Open Access Journal |
| issn | 2345-6949 |
| language | English |
| last_indexed | 2024-04-13T16:30:56Z |
| publishDate | 2018-12-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | International Journal of Mining and Geo-Engineering |
| spelling | doaj.art-d950103be8d24b02b2cb4e446db858f02022-12-22T02:39:35ZengUniversity of TehranInternational Journal of Mining and Geo-Engineering2345-69492018-12-0152214114710.22059/ijmge.2018.229315.59466168703Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mineHossain Noferesti0Ayyoob Hazegh1Department of Mining Engineering, Faculty of Engineering, University of Birjand, Birjand, IranDepartment of Mining Engineering, Faculty of Engineering, University of Birjand, Birjand, IranSungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit wall has not been comprehensively reviewed. In this research, the southwestern wall of the final pit of Sungun Mine investigated by pseudo-static, Newmark and numerical methods. Besides, through the paper, it is tried to explain some of the difficulties in accomplishing and interpretation of results in a dynamic analysis of a mining slope. Pseudo-static analysis revealed that the final pit wall is unsafe against the design earthquake with a high probability of failure. Results of Newmark analysis proved that in the case of design earthquake a large failing region would form. Based on a dynamic numerical analysis of the pit wall, continuous earthquake-induced movements in the forward and downward directions observed, which might be a sign of pit wall instability. The effect of underground water drainage on pit wall stability was investigated in the numerical model. Resulted time histories of the drained pit wall displacements proved that merely water drainage is sufficient for protecting the pit wall against the design earthquake.https://ijmge.ut.ac.ir/article_68703_918e47432ce8a81329723fb006b4df06.pdfdynamic analysisnewmark displacement analysisseismic stabilitysungun copper mine |
| spellingShingle | Hossain Noferesti Ayyoob Hazegh Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine International Journal of Mining and Geo-Engineering dynamic analysis newmark displacement analysis seismic stability sungun copper mine |
| title | Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine |
| title_full | Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine |
| title_fullStr | Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine |
| title_full_unstemmed | Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine |
| title_short | Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine |
| title_sort | comparison of pseudo static newmark and dynamic response analysis of the final pit wall of sungun copper mine |
| topic | dynamic analysis newmark displacement analysis seismic stability sungun copper mine |
| url | https://ijmge.ut.ac.ir/article_68703_918e47432ce8a81329723fb006b4df06.pdf |
| work_keys_str_mv | AT hossainnoferesti comparisonofpseudostaticnewmarkanddynamicresponseanalysisofthefinalpitwallofsunguncoppermine AT ayyoobhazegh comparisonofpseudostaticnewmarkanddynamicresponseanalysisofthefinalpitwallofsunguncoppermine |