利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN105652319A 一种复杂介质近地表地层Q值的估计方法 无效 - 驳回

一种复杂介质近地表地层Q值的估计方法
摘要：
本发明涉及一种复杂介质近地表地层Q值的估计方法，包括以下步骤：1)采集目标区域的实测Rayleigh面波单炮地震记录，用多道面波分析方法处理实测Rayleigh面波单炮地震记录，得出近地表地层具有N种不同介质；2)建立近地表地层Q值初始向量，用地震波正演模拟工具模拟合成Rayleigh面波单炮地震记录；3)用高分辨率拉东变换对实测Rayleigh面波单炮地震记录和合成Rayleigh面波单炮地震记录进行模式分离，得到基阶模式和各高阶模式的实测Rayleigh面波单炮地震记录和合成Rayleigh面波单炮地震记录；计算基阶模式和各高阶模式的初始目标函数值；将基阶模式和各高阶模式的初始目标函数值加权相加，得到总的初始目标函数值；4)使用模拟退火法反演近地表地层Q值。
摘要（英）：

The invention relates to an estimation method of a near-surface stratum Q value of complex mediums. The estimation method comprises the steps of: 1) collecting an actual measurement Rayleigh surface wave single shot seismic record of a target area, processing the actual measurement Rayleigh surface wave single shot seismic record with a multichannel surface wave analysis method, and obtaining that a near-surface stratum has N kinds of different mediums; 2) establishing an initial vector of the near-surface stratum Q value, and synthesizing a Rayleigh surface wave single shot seismic record with a seismic wave forward modeling tool; 3) carrying out mode separation on the actual measurement Rayleigh surface wave single shot seismic record and the synthesized Rayleigh surface wave single shot seismic record by means of high resolution Radon transformation, obtaining the actual measurement Rayleigh surface wave single shot seismic records and the synthesized Rayleigh surface wave single shot seismic records of a fundamental mode and various high-order modes, calculating initial target function values of the fundamental mode and the various high-order modes, carrying out weighted addition on the initial target function values of the fundamental mode and the various high-order modes, and obtaining a total initial target function value; and 4) utilizing an simulated annealing method to invert the near-surface stratum Q value.

0/0