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首页> 外文会议>International Symposium on Geotechnical Measurements and Modelling; Sep 23-25, 2003; Karlsruhe, Germany >Measurement of the spatially distributed water content in geotechnics
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Measurement of the spatially distributed water content in geotechnics

机译：测量岩土工程中空间分布的水含量

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摘要

The physical properties of soil such as water content or hydraulic conductivity are very important in many applications in soil mechanics and other geosciences. Due to a lack of adequate measurement methods the Soil Moisture Group (SMG) at the University of Karlsruhe has developed a new soil moisture measurement technology. This measurement system consists of moisture sensitive transmission lines which are embedded in the soil. Electromagnetic pulses are applied to the sensor and the reflections are recorded with a time domain reflectometer (TDR). With a new inversion algorithm which uses the full information content of the TDR signal, the spatial variability of the dielectric properties of the soil which are correlated to the water content can be determined. Experimental results obtained in various projects dealing with measurement and monitoring of water content demonstrate the applicability of the proposed method for practical problems.
机译：土壤的物理特性（例如水分或水力传导率）在土壤力学和其他地球科学的许多应用中非常重要。由于缺乏适当的测量方法，卡尔斯鲁厄大学的土壤水分小组（SMG）开发了一种新的土壤水分测量技术。该测量系统由嵌入土壤中的对水分敏感的传输线组成。将电磁脉冲施加到传感器，并使用时域反射仪（TDR）记录反射。利用一种新的反演算法，该算法利用了TDR信号的全部信息内容，可以确定与水含量相关的土壤介电特性的空间变异性。在测量和监测水含量的各种项目中获得的实验结果证明了该方法在实际问题中的适用性。

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