Numerical simulation of 3D seismic wave field in porous media in mesoscopic scale

2017 ◽  
Author(s):  
Gang Gao* ◽  
Yahua Yang ◽  
Zhixian Gui ◽  
Zhenhua He
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xu Qian ◽  
Wang Zhong-Qi

The amplitude-frequency characteristics of seismic wave field excited by an explosive source can directly affect the accuracy of seismic prospecting. To reveal the laws by which the horizontally distributed charge excites the amplitude-frequency characteristics, a method to calculate seismic wave field excited by horizontally distributed charge was studied in this paper. By taking the spherical cavity source model as the basis, the superposition method was applied to obtain the approach of calculating seismic wave field excited by horizontally distributed charge. Compared with numerical simulation, the error of this method was controlled under 7%. As a matter of fact, the distributive charge can effectively reduce the impact on ground vibration and increase the downward seismic wave energy. The charges that are horizontally distributed with 1 m interval can enhance the seismic wave resolution excited by explosive source. The research shows that the established theoretical model can correctly describe the amplitude-frequency characteristics of the seismic wave field excited by horizontally distributed charges.


2016 ◽  
Vol 206 (2) ◽  
pp. 921-940 ◽  
Author(s):  
Ioanna-Kleoniki Fontara ◽  
Petia S. Dineva ◽  
George D. Manolis ◽  
Frank Wuttke

2019 ◽  
Vol 4 (1) ◽  
pp. 141-148
Author(s):  
Sergey Efimov

The article presents a space-time analysis of the seismic wave from a distributed career explosion. The method of direct measurement based on the dynamic model of the wave field is used to form an image of the seismic wave field in the field of quarry explosions. The efficiency of the proposed method is shown by the example of experimental seismic recording processing. The program "Nelumbo" is used to visualize the seismic field, which on the basis of experimental seismic records allows to form an image of the wave field in the space of the hemisphere, the center of which corresponds to the position of the seismometer (registration point). The algorithm of the program "Nelumbo" is based on the Huygens – Fresnel principle and Kirchhoff's theorem. The algorithm of the program allows to allocate from record of a seismic signal frames of a certain duration and to form the image of a wave field in space of a solid angle dimension π. This approach can be used as a tool to analyze the nature of the development of disturbances in the environment and the analysis of environmental risks in the production of blasting.


1989 ◽  
Author(s):  
Lars Sonneland ◽  
Olav Barkved ◽  
Morten Olsen ◽  
Gary Snyder

2010 ◽  
Author(s):  
Yong Yun‐dong ◽  
Wang Xi‐wen ◽  
Wang Yu‐chao ◽  
Hu Zi‐Duo ◽  
Wang En‐Li

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