城鎮(zhèn)化是人類社會現(xiàn)代化發(fā)展的必然趨勢。在未來的10年里,中國城鎮(zhèn)化進程將以其歷史上最高的速度運行。中國城鎮(zhèn)化對地下空間的需求極大。如能在我國現(xiàn)階段城鎮(zhèn)化發(fā)展對環(huán)境的影響和破壞尚未達到無法控制之前,深入研究和利用高頻面波方法,有效探測、檢測和監(jiān)測與人類生存息息相關(guān)的淺地表環(huán)境,為城鎮(zhèn)發(fā)展提供科學(xué)觀測數(shù)據(jù),無疑對促進我國社會的高速可持續(xù)發(fā)展至關(guān)重要。淺地表地球物理方法在合理開發(fā)、綜合利用和有效保護地下空間的應(yīng)用中面臨諸多理論和實際問題。隨著淺層勘探方法的不斷發(fā)展,如何提高地震反演的精度,精確的刻畫淺地表地下結(jié)構(gòu)已成為淺層勘探亟待解決的問題。瑞雷波和勒夫波多道分析方法（MASW和MALW）均是基于頻散曲線的反演獲得地下S波速度結(jié)構(gòu)。由于頻散曲線正演基于水平層狀模型假設(shè),瑞雷波和勒夫波多道分析方法均僅適用于水平層狀模型及橫向S波速度緩變的地球模型。這被視為目前高頻面波方法發(fā)展的一個重要局限。另一個問題是頻散曲線模式的正確識別,如泄漏波和“模式接吻”的存在,實際資料處理中,如沒有其它資料對模型的限制,頻散曲線模式的正確識別幾乎是不可能的。對于含有軟夾層、起伏地表等較為復(fù)雜的地球模型,頻散曲線的提... 

【文章來源】：中國地質(zhì)大學(xué)湖北省211工程院校教育部直屬院校

【文章頁數(shù)】：124 頁

【學(xué)位級別】：博士

【文章目錄】：
作者簡歷
中文摘要
Abstract
Chapter 1 Introduction
    1.1 Surface-wave methods
    1.2 Surface-waves challenges
    1.3 Thesis Objective
    1.4 Thesis Structure
Chapter 2 The Theory of Full Waveform Inversion
    2.1 The forward problem
        2.1.1 The elastic wave equations
        2.1.2 Initial and Boundary Conditions
        2.1.3 The horizontal free surface
    2.2 The adjoint problem
        2.2.1 The optimum model
        2.2.2 The adjoint state method
        2.2.3 Multiscale strategy
Chapter 3 The Cross-talk Influences Between Different Parameters
    3.1 The gradients of different parameters
    3.2 The Circle-Triangle-Square model
        3.2.1 True and initial models
        3.2.2 Acquisition geometry and forward modelling
        3.2.3 FWI setup
        3.2.4 Results
        3.2.5 Comparisons
    3.3 The Influence of the initial P-wave velocity and density
        3.3.1 True P-wave velocity and true density model
        3.3.2 Inaccurate P-wave velocity and inaccurate density model
        3.3.3 Inaccurate P-wave velocity and true density model
        3.3.4 True P-wave velocity and inaccurate density model
        3.3.5 Summary
Chapter 4 The Seismic Wavefield Separation method
    4.1 The separation of Surface and Body Wave based on High-resolution Radon Transform
        4.1.1 Method
        4.1.2 Examples
    4.2 A pitfall of muting and removing bad traces in dispersion analysis
        4.2.1 Synthetic test
        4.2.2 Real-world example
    4.3 Conclusions
Chapter 5 Feasibility of P-wave Velocity Building by Acoustic Full-waveform Inversion Based on Wavefield Separation
    5.1 Workflow
    5.2 Fault model
Chapter 6 The Resolution Analysis in Elastic Full-waveform Inversion
    6.1 The receiver spread lengths
    6.2 The number of the receivers
    6.3 The number of the sources
    6.4 The dominant frequency of the wavelet
Chapter 7 Conclusions
致謝
References


【參考文獻】：
期刊論文
[1]High-Frequency Rayleigh-Wave Method[J]. Richard D Miller,徐義賢,羅銀河,陳超,劉江平,Julian Ivanov.  Journal of Earth Science. 2009(03)



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