Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory
In order to solve the rock burst disaster during the excavation of deep buried high stress hard rock tunnel, the method of changing the properties of surrounding rock by blasting is proposed in this paper. This method can effectively change the physical and mechanical properties of surrounding rock,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2022-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2022/5057665 |
| _version_ | 1811183569501945856 |
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| author | Yanhua Sun Xiaohu Zhang Hanhua Xu |
| author_facet | Yanhua Sun Xiaohu Zhang Hanhua Xu |
| author_sort | Yanhua Sun |
| collection | DOAJ |
| description | In order to solve the rock burst disaster during the excavation of deep buried high stress hard rock tunnel, the method of changing the properties of surrounding rock by blasting is proposed in this paper. This method can effectively change the physical and mechanical properties of surrounding rock, reduce the storage capacity of surrounding rock corresponding to variable energy, and transfer the stress concentration position to the deep layer, which is an effective means to control rock burst. Taking the tunnel with rockburst tendency as an example, the stress distribution characteristics and displacement changes of surrounding rock under different modification depths are studied by using the numerical calculation method and elastic-plastic mechanics theory, and the effect is tested combined with microseismic data. The results show that the thickness of tunnel blasting loosening is closely related to the stress concentration of surrounding rock, and blasting loosening can effectively inhibit the occurrence and prevention of rock burst. With the increase of blasting depth, the maximum stress concentration decreases. The relevant research results can be used to reasonably design the blasting and loose surrounding rock reconstruction of high stress rock burst tunnel and improve the theoretical and practical basis. |
| first_indexed | 2024-04-11T09:48:58Z |
| format | Article |
| id | doaj.art-bdeea12d12cd4f8f8856f74ce4435fa8 |
| institution | Directory Open Access Journal |
| issn | 1875-9203 |
| language | English |
| last_indexed | 2024-04-11T09:48:58Z |
| publishDate | 2022-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj.art-bdeea12d12cd4f8f8856f74ce4435fa82022-12-22T04:30:53ZengHindawi LimitedShock and Vibration1875-92032022-01-01202210.1155/2022/5057665Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification TheoryYanhua Sun0Xiaohu Zhang1Hanhua Xu2School of Civil EngineeringSchool of Civil EngineeringKunming Prospecting Design Institute Of China Nonferrous Metals Industry Co., LtdIn order to solve the rock burst disaster during the excavation of deep buried high stress hard rock tunnel, the method of changing the properties of surrounding rock by blasting is proposed in this paper. This method can effectively change the physical and mechanical properties of surrounding rock, reduce the storage capacity of surrounding rock corresponding to variable energy, and transfer the stress concentration position to the deep layer, which is an effective means to control rock burst. Taking the tunnel with rockburst tendency as an example, the stress distribution characteristics and displacement changes of surrounding rock under different modification depths are studied by using the numerical calculation method and elastic-plastic mechanics theory, and the effect is tested combined with microseismic data. The results show that the thickness of tunnel blasting loosening is closely related to the stress concentration of surrounding rock, and blasting loosening can effectively inhibit the occurrence and prevention of rock burst. With the increase of blasting depth, the maximum stress concentration decreases. The relevant research results can be used to reasonably design the blasting and loose surrounding rock reconstruction of high stress rock burst tunnel and improve the theoretical and practical basis.http://dx.doi.org/10.1155/2022/5057665 |
| spellingShingle | Yanhua Sun Xiaohu Zhang Hanhua Xu Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory Shock and Vibration |
| title | Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory |
| title_full | Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory |
| title_fullStr | Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory |
| title_full_unstemmed | Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory |
| title_short | Research on Rock Burst Control Mechanism of Deep Buried Tunnel Using Surrounding Rock Modification Theory |
| title_sort | research on rock burst control mechanism of deep buried tunnel using surrounding rock modification theory |
| url | http://dx.doi.org/10.1155/2022/5057665 |
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