Influence of Preconditioning and Tunnel Support on Strain Burst Potential
Strain burst hazard is one of the main challenges that faces deep underground environments. To manage it, it is needed to assess its probability occurrence (or potential). Various methods have been proposed over the years to assess the phenomenon early on. However, due to uncertainties in rock mass...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/13/7419 |
| _version_ | 1797592211472252928 |
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| author | Adeline Delonca Francisco Gonzalez Victor Mendoza Andrea Ceron |
| author_facet | Adeline Delonca Francisco Gonzalez Victor Mendoza Andrea Ceron |
| author_sort | Adeline Delonca |
| collection | DOAJ |
| description | Strain burst hazard is one of the main challenges that faces deep underground environments. To manage it, it is needed to assess its probability occurrence (or potential). Various methods have been proposed over the years to assess the phenomenon early on. However, due to uncertainties in rock mass properties and the physical processes of the phenomenon, mitigation measures are an additional important line of defense to ensure workplace safety. While work has been carried out to assess the rockburst hazard better and improve support systems, the effect of mitigation measures on strain burst hazard potential is unclear. This paper studies the influence of the implementation of shotcrete and rockbolts support and destress blasting in tunnels on strain burst potential, based on two-dimensional numerical models of circular tunnels. The results highlight that, as expected, the use of mitigation measures allows the strain burst occurrence to decrease. However, the strain burst hazard level does not decrease easily, even when using mitigation measures. In the case of serious overbreak hazards, only a combination of system support and destress blasting seems to have an impact on these events, and not for all the simulated cases. |
| first_indexed | 2024-03-11T01:48:15Z |
| format | Article |
| id | doaj.art-93810a709bac4388aa659c41c375ec84 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:48:15Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-93810a709bac4388aa659c41c375ec842023-11-18T16:06:10ZengMDPI AGApplied Sciences2076-34172023-06-011313741910.3390/app13137419Influence of Preconditioning and Tunnel Support on Strain Burst PotentialAdeline Delonca0Francisco Gonzalez1Victor Mendoza2Andrea Ceron3Departamento de Ingeniería Metalúrgica y de Materiales (DIMM), Universidad Técnica Federico Santa María, Valparaíso 2390302, ChileDepartamento de Ingeniería Metalúrgica y de Materiales (DIMM), Universidad Técnica Federico Santa María, Valparaíso 2390302, ChileUnderisk SPA, Maipu 9250000, ChileDepartamento de Ingeniería Metalúrgica y de Materiales (DIMM), Universidad Técnica Federico Santa María, Valparaíso 2390302, ChileStrain burst hazard is one of the main challenges that faces deep underground environments. To manage it, it is needed to assess its probability occurrence (or potential). Various methods have been proposed over the years to assess the phenomenon early on. However, due to uncertainties in rock mass properties and the physical processes of the phenomenon, mitigation measures are an additional important line of defense to ensure workplace safety. While work has been carried out to assess the rockburst hazard better and improve support systems, the effect of mitigation measures on strain burst hazard potential is unclear. This paper studies the influence of the implementation of shotcrete and rockbolts support and destress blasting in tunnels on strain burst potential, based on two-dimensional numerical models of circular tunnels. The results highlight that, as expected, the use of mitigation measures allows the strain burst occurrence to decrease. However, the strain burst hazard level does not decrease easily, even when using mitigation measures. In the case of serious overbreak hazards, only a combination of system support and destress blasting seems to have an impact on these events, and not for all the simulated cases.https://www.mdpi.com/2076-3417/13/13/7419rockburststrain burst potentialdestress blastingtunnel support |
| spellingShingle | Adeline Delonca Francisco Gonzalez Victor Mendoza Andrea Ceron Influence of Preconditioning and Tunnel Support on Strain Burst Potential Applied Sciences rockburst strain burst potential destress blasting tunnel support |
| title | Influence of Preconditioning and Tunnel Support on Strain Burst Potential |
| title_full | Influence of Preconditioning and Tunnel Support on Strain Burst Potential |
| title_fullStr | Influence of Preconditioning and Tunnel Support on Strain Burst Potential |
| title_full_unstemmed | Influence of Preconditioning and Tunnel Support on Strain Burst Potential |
| title_short | Influence of Preconditioning and Tunnel Support on Strain Burst Potential |
| title_sort | influence of preconditioning and tunnel support on strain burst potential |
| topic | rockburst strain burst potential destress blasting tunnel support |
| url | https://www.mdpi.com/2076-3417/13/13/7419 |
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