地球物理学进展 ›› 2014, Vol. 29 ›› Issue (1): 276-281.doi: 10.6038/pg20140139

• 应用地球物理 • 上一篇    下一篇

起伏地表地震资料成像方法分析

秦晶晶, 谭雅丽, 左莹   

  1. 中国地震局地球物理勘探中心, 郑州 450002
  • 收稿日期:2013-07-25 修回日期:2013-11-27 出版日期:2014-02-20 发布日期:2014-02-20
  • 通讯作者: 谭雅丽,女,1967年生,河南泌阳人,高级工程师,从事反射地震资料数据处理及方法研究.(E-mail:tyl011@126.com) E-mail:tyl011@126.com
  • 作者简介:秦晶晶,女,1987年生,河南洛阳人,硕士研究生,从事反射地震资料数据处理及方法研究.(E-mail:cumtqinjingjing@163.com)

Analysis on methods for seismic data imaging in the fluctuant surface areas

QIN Jing-jing, TAN Ya-li*, ZUO Ying   

  1. The Geophysical Exploration Center of CEA, Zhengzhou 450002, China
  • Received:2013-07-25 Revised:2013-11-27 Online:2014-02-20 Published:2014-02-20

摘要: 西部地区地表起伏剧烈, 往往伴随着地下构造复杂, 给地震偏移处理工作带来了极大的困难, 导致后续的解释结果与实际构造存在一定的差异.因此, 复杂地区的地震资料成像问题显得尤为重要.文章通过对复杂地表模型的正演模拟以及山区实际地震资料的应用两方面的分析, 获得了适合复杂地表的成像方法.结果表明:针对复杂地区, 叠加技术成像比偏移技术成像更能真实地反映地下构造形态, 是一种提高复杂地区构造成像精度的有效方法;同时, 将叠加剖面和偏移剖面两者有机结合, 对复杂地表资料进行解释分析, 更能体现地下构造的真实形态, 为煤矿工作的安全开采提供了有利依据.

Abstract: That the surface dramatic ups and downs in the western region, often accompanied with a complex subsurface structure, brings great difficulties to seismic migration processing. It leads to some differences between the subsequent interpretation results and the actual construction, so the seismic imaging problem in complex region is very important. In this paper, it obtains the imaging method for complex surface by analyzing both the forward modeling of complex surface models and the actual seismic data of the mountains. The results show that: for complex regions, the stacked imaging technology can reflect the true form of the subsurface structure better than the migrated imaging technology, and it is an effective method to improve the accuracy of structural imaging in complex region; At the same time, the combination of both the stacked section and migrated section can truly reflect the underground structures in complex surface, and it provides a favorable basis for coal mining safety work.

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