首页> 外文会议>Great Lakes Geotechnical and Geoenvironmental Conference; 20050513; Milwaukee,WI(US) >USE OF ELASTIC AND ELECTROMAGNETIC WAVES TO EVALUATE THE WATER CONTENT AND MASS DENSITY OF SOILS: POTENTIAL AND LIMITATIONS
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USE OF ELASTIC AND ELECTROMAGNETIC WAVES TO EVALUATE THE WATER CONTENT AND MASS DENSITY OF SOILS: POTENTIAL AND LIMITATIONS

机译:利用弹性波和电磁波评估土壤的水分含量和密度:潜力和局限性

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摘要

The use of elastic and electromagnetic waves to monitor soil properties provides complementary information about stiffness and phase distribution. This paper presents a methodology for monitoring electromagnetic (ELM) and elastic wave parameters as the soil is being inundated with water. The approach helps relating volumetric water content to stiffness and hints to the use of the technique for nondestructive evaluation of in situ water content and mass density of soils. The methodology is tested using a simple numerical study that incorporates errors in the simulated measurement of volumetric water content and P-wave velocity. Results show that even with the presence of errors, the inverted results match the simulated values of mass density and water content. The development of such a technique opens an opportunity for the advancement in measurement practices over time-consuming and destructive techniques (e.g., sand cone and water balloon methods) and for the replacement of regulated materials (i.e., nuclear moisture-density apparatus).
机译:使用弹性波和电磁波监测土壤特性可提供有关刚度和相分布的补充信息。本文介绍了一种在土壤被水淹没时监测电磁(ELM)和弹性波参数的方法。该方法有助于将体积含水量与刚度相关联,并提示使用该技术对土壤原位含水量和质量密度进行无损评估。使用简单的数值研究对方法进行了测试,该数值研究在模拟测量体积水含量和纵波速度时引入了误差。结果表明,即使存在误差,反演结果也与质量密度和水含量的模拟值匹配。这种技术的发展为改进测量实践提供了机会,使其比耗时且具有破坏性的技术(例如,砂锥和水囊法)更先进,并有可能替代受管制的材料(例如,核湿密度仪)。

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