起伏地表物理模拟的水面无接触快速采集方法

Non-contact water acquisition approach for physical modeling on rugged topographical models

由于实验室条件的限制,针对起伏地表的物理模拟采集直接在固体表面进行,存在实现难度大、采集速度慢、耦合误差大的缺点。为此,本文基于波场重构原理,提出了一种针对起伏地表的水面无接触快速采集方法,通过直接在水面进行观测、采集,然后由水面观测的地震数据重构固体表面的观测地震数据。该方法将数值模拟和物理模拟结合,既保留了物理模拟的真实性,又利用了数值模拟的易操作性,能够克服起伏地表物理模拟采集难度大、采集速度慢的问题,大大提高了起伏地表物理模拟采集的精度和效率。论文实验部分对数值模型和物理模型分别进行固体观测和水面观测,通过对两种采集方法得到的固体观测地震记录进行比较,证明了该方法的优越性。

Conventional acquisition on physical models with rugged topography is directly implemented on model surface.This solid acquisition approach usually causes complicated operating process,slow acquisition speed and large coupling error due to the limitation of laboratory conditions.To solve these problems,this paper proposes a novel non-contact water acquisition approach for physical modeling on rugged topographical models.It calculates the solid acquisition data from water acquisition data.With the authenticity of physical modeling and the flexibility of numerical modeling,this water-surface acquisition approach can solve the problems.In addition,it can also improve the efficiency and data accuracy in the acquisition process.The solid acquisition and water-surface acquisition are implemented on rugged topography models,which are simulated by both numerical modeling and physical modeling,to verify the superiority of this approach.