Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method
To investigate the dynamic response and attenuation law of rock slope sites subjected to blasting, three lithological numerical models, including slate (hard rock), tuff (relatively soft rock), and shale (soft rock), are established by using MatDEM. By analyzing the wave field, velocity, and acceler...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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GeoScienceWorld
2024-02-01
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| Series: | Lithosphere |
| Online Access: | https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2024/lithosphere_2023_302/6217448/lithosphere_2023_302.pdf |
| _version_ | 1797320887189372928 |
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| author | Danqing Song Xuerui Quan Zhuo chen Dakai Xu Chun Liu Xiaoli Liu Enzhi Wang |
| author_facet | Danqing Song Xuerui Quan Zhuo chen Dakai Xu Chun Liu Xiaoli Liu Enzhi Wang |
| author_sort | Danqing Song |
| collection | DOAJ |
| description | To investigate the dynamic response and attenuation law of rock slope sites subjected to blasting, three lithological numerical models, including slate (hard rock), tuff (relatively soft rock), and shale (soft rock), are established by using MatDEM. By analyzing the wave field, velocity, and acceleration response of the models and their Fourier spectrum, combined with stress and energy analysis, their dynamic response characteristics are investigated. The results show that blasting waves propagate from near field to far field in a circular arc, and the attenuation effect of waves in soft rock is less than that in hard rock. The influence of lithology on the dynamic response of the ground surface and bedrock is different. Blasting waves mainly affect the dynamic response in the near-field area of the blasting source. In addition, the dynamic amplification effect of slopes is as follows: hard rock > relatively soft rock > soft rock. The slope surface has an elevation attenuation effect. A dynamic amplification effect appears in the slope interior within the relative elevation (0.75, 1.0). The Fourier spectrum has an obvious predominant frequency, and that of the slope crest and interior is less than that of the slope surface. Moreover, the total energy generated by the rocky sites gradually changes into kinetic energy, gravitational potential energy, elastic potential energy, and heat. Energy-based analysis shows that the attenuation effect of blasting waves in hard rock is larger than that in soft rock overall. This work can provide a reference for revealing the blasting vibration effect of rock sites. |
| first_indexed | 2024-03-08T04:48:34Z |
| format | Article |
| id | doaj.art-4c1ad14b2a0a48f487365e068af83eef |
| institution | Directory Open Access Journal |
| issn | 1941-8264 1947-4253 |
| language | English |
| last_indexed | 2024-03-08T04:48:34Z |
| publishDate | 2024-02-01 |
| publisher | GeoScienceWorld |
| record_format | Article |
| series | Lithosphere |
| spelling | doaj.art-4c1ad14b2a0a48f487365e068af83eef2024-02-08T06:54:08ZengGeoScienceWorldLithosphere1941-82641947-42532024-02-012024110.2113/2024/lithosphere_2023_302Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element MethodDanqing Song0Xuerui Quan1Zhuo chen2https://orcid.org/0000-0003-4466-3992Dakai Xu3Chun Liu4Xiaoli Liu5Enzhi Wang6State Key Laboratory of Subtropical Building and Urban Science, School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510640, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, ChinaSichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, ChinaSichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, College of Civil Engineering, Sichuan Agricultural University, Dujiangyan, 611830, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing, 210023, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, 100084, ChinaTo investigate the dynamic response and attenuation law of rock slope sites subjected to blasting, three lithological numerical models, including slate (hard rock), tuff (relatively soft rock), and shale (soft rock), are established by using MatDEM. By analyzing the wave field, velocity, and acceleration response of the models and their Fourier spectrum, combined with stress and energy analysis, their dynamic response characteristics are investigated. The results show that blasting waves propagate from near field to far field in a circular arc, and the attenuation effect of waves in soft rock is less than that in hard rock. The influence of lithology on the dynamic response of the ground surface and bedrock is different. Blasting waves mainly affect the dynamic response in the near-field area of the blasting source. In addition, the dynamic amplification effect of slopes is as follows: hard rock > relatively soft rock > soft rock. The slope surface has an elevation attenuation effect. A dynamic amplification effect appears in the slope interior within the relative elevation (0.75, 1.0). The Fourier spectrum has an obvious predominant frequency, and that of the slope crest and interior is less than that of the slope surface. Moreover, the total energy generated by the rocky sites gradually changes into kinetic energy, gravitational potential energy, elastic potential energy, and heat. Energy-based analysis shows that the attenuation effect of blasting waves in hard rock is larger than that in soft rock overall. This work can provide a reference for revealing the blasting vibration effect of rock sites.https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2024/lithosphere_2023_302/6217448/lithosphere_2023_302.pdf |
| spellingShingle | Danqing Song Xuerui Quan Zhuo chen Dakai Xu Chun Liu Xiaoli Liu Enzhi Wang Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method Lithosphere |
| title | Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method |
| title_full | Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method |
| title_fullStr | Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method |
| title_full_unstemmed | Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method |
| title_short | Influence of Lithology on the Characteristics of Wave Propagation and Dynamic Response in Rocky Slope Sites Subject to Blasting Load Via the Discrete Element Method |
| title_sort | influence of lithology on the characteristics of wave propagation and dynamic response in rocky slope sites subject to blasting load via the discrete element method |
| url | https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2024/lithosphere_2023_302/6217448/lithosphere_2023_302.pdf |
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