Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation
Explosives are the most common seismic source in seismic explorations, whose excitation effect is closely associated with their properties, weight, buried depth, and charging constitution. This study analyzes the influence of seismic source parameters on the features of the explosion wavelet. The ex...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8836022 |
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| author | Ruohua Qiu Zhaoxing Dong Yanjun Qi Yanhui Wang Lidong Xie Honghua Liu |
| author_facet | Ruohua Qiu Zhaoxing Dong Yanjun Qi Yanhui Wang Lidong Xie Honghua Liu |
| author_sort | Ruohua Qiu |
| collection | DOAJ |
| description | Explosives are the most common seismic source in seismic explorations, whose excitation effect is closely associated with their properties, weight, buried depth, and charging constitution. This study analyzes the influence of seismic source parameters on the features of the explosion wavelet. The explosion process of the seismic source in marine carbonate is numerically simulated with the finite element software LS-DYNA. We consider three parameters, including buried depth, charge weight, and decoupling coefficient. To verify the simulation outcomes, we also carry out field observations. The appropriate buried depth of the explosive should be determined according to stratum lithology. As the charge weight increases, low-frequency energy of the source wavelet increases rapidly. The optimum charge weight is 16–18 kg, and the ideal charging structure is in a concentrated, short-column shape. Compared with the buried depth and charge weight, the decoupling coefficient shows more noticeable influence on the excitation effect of the source wavelet, and the optimum coefficient lies between 2.5 and 3. The results of this study may provide reference data for designing explosion parameters in field seismic explorations. |
| format | Article |
| id | doaj-art-88677a75e2bd49ddad6de7e0d05775df |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-88677a75e2bd49ddad6de7e0d05775df2025-08-20T03:38:06ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88360228836022Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical SimulationRuohua Qiu0Zhaoxing Dong1Yanjun Qi2Yanhui Wang3Lidong Xie4Honghua Liu5School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaZhengzhou Urban Planning Design & Survey Research Institute, Zhengzhou 450052, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaQingdao Geological Engineering Survey Institute, Qingdao 266100, ChinaExplosives are the most common seismic source in seismic explorations, whose excitation effect is closely associated with their properties, weight, buried depth, and charging constitution. This study analyzes the influence of seismic source parameters on the features of the explosion wavelet. The explosion process of the seismic source in marine carbonate is numerically simulated with the finite element software LS-DYNA. We consider three parameters, including buried depth, charge weight, and decoupling coefficient. To verify the simulation outcomes, we also carry out field observations. The appropriate buried depth of the explosive should be determined according to stratum lithology. As the charge weight increases, low-frequency energy of the source wavelet increases rapidly. The optimum charge weight is 16–18 kg, and the ideal charging structure is in a concentrated, short-column shape. Compared with the buried depth and charge weight, the decoupling coefficient shows more noticeable influence on the excitation effect of the source wavelet, and the optimum coefficient lies between 2.5 and 3. The results of this study may provide reference data for designing explosion parameters in field seismic explorations.http://dx.doi.org/10.1155/2020/8836022 |
| spellingShingle | Ruohua Qiu Zhaoxing Dong Yanjun Qi Yanhui Wang Lidong Xie Honghua Liu Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation Advances in Civil Engineering |
| title | Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation |
| title_full | Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation |
| title_fullStr | Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation |
| title_full_unstemmed | Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation |
| title_short | Influence of Seismic Source Parameters on the Excitation Wavelet in Seismic Explorations Based on Numerical Simulation |
| title_sort | influence of seismic source parameters on the excitation wavelet in seismic explorations based on numerical simulation |
| url | http://dx.doi.org/10.1155/2020/8836022 |
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