ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING
The propagation of waves generated by an explosion induces both tensile and compressive stresses in the rock, impacting its mechanical and dynamic behaviour and ultimately leading to failure. Within this process, the phenomenon of crack expansion is of significant importance and has garnered the att...
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University of Zagreb
2025-01-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
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| Online Access: | https://hrcak.srce.hr/file/478288 |
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| author | Seyed Mohammad Reza Sahlabadi Kaveh Ahangari Mosleh Eftekhari |
| author_facet | Seyed Mohammad Reza Sahlabadi Kaveh Ahangari Mosleh Eftekhari |
| author_sort | Seyed Mohammad Reza Sahlabadi |
| collection | DOAJ |
| description | The propagation of waves generated by an explosion induces both tensile and compressive stresses in the rock, impacting its mechanical and dynamic behaviour and ultimately leading to failure. Within this process, the phenomenon of crack expansion is of significant importance and has garnered the attention of various researchers in recent years. Predicting fracture geometry in rock materials, particularly in the context of crack growth, is a complex problem often necessitating advanced techniques. In this study, a blast hole was drilled into a concrete sample, and four explosion modes were examined using the discrete element method. These modes included the simultaneous modelling of shock energy, reflection, and gas pressure; the simultaneous modelling of shock energy and gas pressure; the simultaneous modelling of shock energy and reflection; and the modelling of shock energy alone. While the homogeneity observed in artificial samples like concrete may not precisely mimic that of stone samples, the findings of such research remain valuable within their limitations. The results indicate that the highest joint density, or, in other words, the most substantial rock fragmentation, occurs when all three types of shock energy, reflection, and gas pressure are present simultaneously. Furthermore, the results show that the model incorporating both gas pressure and shock energy exhibits the most significant rock fragmentation, followed by the model considering only shock and reflection energy. Finally, the model modelling shock energy alone demonstrates the least fragmentation. |
| format | Article |
| id | doaj-art-eacbc9625d764e00a8bdf62f98037aa0 |
| institution | DOAJ |
| issn | 0353-4529 1849-0409 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | University of Zagreb |
| record_format | Article |
| series | Rudarsko-geološko-naftni Zbornik |
| spelling | doaj-art-eacbc9625d764e00a8bdf62f98037aa02025-08-20T03:09:28ZengUniversity of ZagrebRudarsko-geološko-naftni Zbornik0353-45291849-04092025-01-014028710510.17794/rgn.2025.2.7ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLINGSeyed Mohammad Reza Sahlabadi0Kaveh Ahangari1Mosleh Eftekhari2Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranDepartment of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranDepartment of Mining Engineering, Tarbiat Modares University, Tehran, IranThe propagation of waves generated by an explosion induces both tensile and compressive stresses in the rock, impacting its mechanical and dynamic behaviour and ultimately leading to failure. Within this process, the phenomenon of crack expansion is of significant importance and has garnered the attention of various researchers in recent years. Predicting fracture geometry in rock materials, particularly in the context of crack growth, is a complex problem often necessitating advanced techniques. In this study, a blast hole was drilled into a concrete sample, and four explosion modes were examined using the discrete element method. These modes included the simultaneous modelling of shock energy, reflection, and gas pressure; the simultaneous modelling of shock energy and gas pressure; the simultaneous modelling of shock energy and reflection; and the modelling of shock energy alone. While the homogeneity observed in artificial samples like concrete may not precisely mimic that of stone samples, the findings of such research remain valuable within their limitations. The results indicate that the highest joint density, or, in other words, the most substantial rock fragmentation, occurs when all three types of shock energy, reflection, and gas pressure are present simultaneously. Furthermore, the results show that the model incorporating both gas pressure and shock energy exhibits the most significant rock fragmentation, followed by the model considering only shock and reflection energy. Finally, the model modelling shock energy alone demonstrates the least fragmentation.https://hrcak.srce.hr/file/478288blast waveshock energyreflection energygas pressurenumerical modelling |
| spellingShingle | Seyed Mohammad Reza Sahlabadi Kaveh Ahangari Mosleh Eftekhari ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING Rudarsko-geološko-naftni Zbornik blast wave shock energy reflection energy gas pressure numerical modelling |
| title | ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING |
| title_full | ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING |
| title_fullStr | ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING |
| title_full_unstemmed | ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING |
| title_short | ANALYSIS OF THE IMPACT OF DIFFERENT BLAST ENERGIES ON ROCK CRUSHING USING NUMERICAL MODELLING |
| title_sort | analysis of the impact of different blast energies on rock crushing using numerical modelling |
| topic | blast wave shock energy reflection energy gas pressure numerical modelling |
| url | https://hrcak.srce.hr/file/478288 |
| work_keys_str_mv | AT seyedmohammadrezasahlabadi analysisoftheimpactofdifferentblastenergiesonrockcrushingusingnumericalmodelling AT kavehahangari analysisoftheimpactofdifferentblastenergiesonrockcrushingusingnumericalmodelling AT mosleheftekhari analysisoftheimpactofdifferentblastenergiesonrockcrushingusingnumericalmodelling |