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Use of electrical resistivity and multichannel analysis of surface wave geophysical tomography in geotechnical site characterization of dam.

机译:电阻率和表面波地球物理层析成像的多通道分析在大坝岩土工地特征分析中的应用。

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摘要

Performance of geotechnical site characterization is a primary function of geotechnical engineers. Generalizations required to extrapolate conventional geotechnical boring data can limit the effectiveness of site assessments. Advancements in geophysical technology have simplified means of data acquisition and interpretation of electrical and seismic testing, allowing a broader audience of practitioners to utilize methods for various engineering and environmental applications. In this study, electrical resistivity and multichannel analysis of surface waves (MASW) seismic geophysical methods are used to expound upon previous geotechnical sampling and in situ testing conducted at an earthen dam site in East Texas. Findings from this study show: results of geophysical testing are comparable with those from conventional geotechnical field and laboratory testing, dissimilarities between geophysical profiles and geotechnical data can exist due to soil heterogeneity, resolution capabilities and data smoothing associated with geophysical interpretation, and areas of low resistivity and low density corresponded with observations of seepage and seepage related issues.
机译:岩土现场表征的执行是岩土工程师的主要功能。外推常规岩土钻探数据所需的概括性操作可能会限制现场评估的有效性。地球物理技术的进步简化了数据采集以及电气和地震测试解释的手段,使更多的从业者可以将方法用于各种工程和环境应用。在这项研究中,使用电阻率和表面波多通道分析(MASW)地震地球物理方法来解释以前在德克萨斯州东部的土坝现场进行的岩土采样和现场测试。这项研究的结果表明:地球物理测试的结果可与常规岩土现场和实验室测试的结果相媲美,由于土壤异质性,与地球物理解释相关的分辨率和数据平滑性,以及地球低洼地区,地球物理剖面和岩土数据之间可能存在差异电阻率和低密度与渗流和渗流相关问题的观测结果相对应。

著录项

  • 作者

    Hubbard, Joshua Lee.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Geophysics.;Engineering Civil.
  • 学位 M.S.
  • 年度 2009
  • 页码 137 p.
  • 总页数 137
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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