Velocity–Moisture Relationships for Sandy Soils: Experimental Results and Data Analysis
Velocity–Moisture Relationships for Sandy Soils: Experimental Results and Data Analysis
复制标题
沙土的速度-湿度关系：实验结果和数据分析
DOI：
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发表时间：
2009
影响因子：
5.6
通讯作者：
N. Giaquinto
中科院分区：
文献类型：
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作者：
F. Adamo;F. Attivissimo;L. Fabbiano;N. Giaquinto
近年来提出了许多原位土壤表征技术，其中，声学方法已被证明是特别有前途的。这些方法基于对地震波、声波和超声波的传播速度的测量。然而，在颗粒和多孔介质中，速度以一种复杂且尚未完全理解的方式取决于土壤的饱和状态。在本文中，一个精细的数学模型来解释许多土壤性质，如孔隙度，体积模量和压力对声波速度的影响，提出和研究。该模型已被验证的速度的测量值和计算值之间的实验比较，使用一种已知的特性的沙子。一个定制的测量系统已经开发和实现了这一目的。该模型在地热资源评价、石油勘探、环境保护、考古和文化遗址保护等领域具有潜在的应用价值。
Many techniques have been proposed in recent years for in situ soil characterization, and among them, acoustic methods have been revealed to be particularly promising. These methods are based on measurements of the propagation velocities of seismic, sonic, and ultrasonic waves. However, in granular and porous mediums, velocities depend on the state of the saturation of the soil in a complex and not yet fully understood way. In this paper, a refined mathematical model to account for the effects of many soil properties such as porosity, bulk modulus, and pressure on acoustic wave velocity is proposed and investigated. The model has been validated by an experimental comparison between the measured and calculated values of velocities, using a kind of sand of known characteristics. A custom measurement system has been developed and realized for this purpose. The proposed model has potential applications in various areas, including geothermal resource evaluation, petroleum exploration, environmental protection, and archaeological and cultural site protection.