Numerical computation of wave propagation in fractured media by applying the grid-characteristic method on hexahedral meshes

被引：11
|
作者：
Golubev, V. I. [1 ]
Petrov, I. B. [1 ]
Khokhlov, N. I. [1 ]
Shul'ts, K. I. [1 ]
机构：
[1] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Oblast, Russia
来源：
COMPUTATIONAL MATHEMATICS AND MATHEMATICAL PHYSICS | 2015年 / 55卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
hyperbolic equations; grid-characteristic numerical method; mathematical simulation; fractured media; EQUATIONS;
D O I：
10.1134/S0965542515030082
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Wave propagation in fractured rock in the course of seismic exploration is studied. The grid-characteristic method on hexahedral meshes is extended to the case of an elastic medium with empty and fluid-saturated cracks. The crack effect on wave propagation in the medium is taken into account by introducing cracks at the stage of grid generation with boundary conditions and conditions on the crack edges specified in explicit form. This method is used to obtain wave patterns near an extended inclined crack. The problem of numerically computing the seismic effect produced by a cluster of vertical and subvertical cracks is given in a complete three-dimensional formulation. The structure of the resulting pattern and the influence exerted by the crack-filling substance on the signal recorded on the surface are examined.
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页码：509 / 518
页数：10
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