三维生物礁滩建模及地震数值模拟  

3D seismic numerical simulation for biological reef and bank models

作　　者：黄继伟[1] 熊晓军[1] 贺振华[1] 

机构地区：[1]成都理工大学地球探测与信息技术教育部重点实验室,成都610059

出　　处：《物探化探计算技术》2014年第3期326-330,共5页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家自然科学基金(41274130)

摘　　要：基于塔礁、点礁、生物滩等地质体的几何特征及地质特征,采用高精度的三维块状建模方法,建立了适合于复杂地区的三维礁滩复合体模型。该模型不但立体地反映了生物礁、生物滩及地层间的空间展布特征,还可以直观地体现了生物礁滩储层内部的物性差异。此外采用FK域三维波动方程数值模拟方法对其进行了地震波场数值模拟,得到了一系列具有代表性时间剖面上的地震波场响应特征,为正确认识实际生物礁滩的复杂结构和特性提供了依据。A high-precision 3D blocky structure modeling method was introduced to build a 3-D reefs and banks complex model suitable for the Sichuan region which was based on the geometric and geological characteristics of some geological body like the pinnacle reefs,patch reefs,biological banks,etc.This model can not only reflects the 3D spatial distribution characteristics of the reefs,the banks and the layers but also show the differences in the physical properties of the internal reef ＆amp; bank reser-voirs.In addition,the 3D wave equation numerical simulation in F-K domain was used in this paper to obtain a series of typical seismic wave-field response characteristics in seismic time profile,which can offer an academic support for the interpretation re-sult of the biological reef and bank in practical application.

关 键 词：生物礁 生物滩 三维建模 波动方程 数值模拟 

分 类 号：P631.443[天文地球—地质矿产勘探]