Static sounding probe combined with TDR (time domain reflectometry) technology, detection system and measurement method

Abstract

The invention relates to a static sounding probe combined with a TDR (time domain reflectometry) technology, a detection system and a measurement method.The probe comprises a conical head, a probe rod, a probe control unit, a TDR probe, a first detection mechanism used for detecting conical tip resistance, a second detection mechanism used for detecting side friction resistance and a third detection mechanism used for detecting pore water pressure, the conical head comprises a conical section and a cylindrical section, the number of the TDR probes is multiple, the outer side wall of the conical head is provided with clamping grooves which are consistent with the number of the TDR probes, the clamping grooves are arranged around the surface of the conical head at equal angles, the TDR probes are embedded in the clamping grooves respectively, the directions of the TDR probes are parallel to the axial direction of the conical head, the contact surfaces of the TDR probes and the conical head are provided with insulating layers, and the end parts of the TDR probes are conical. The TDR probe extends to the conical section of the conical head and is in smooth transition with the conical surface of the conical section, and the TDR probe and the detection mechanisms are all connected with the probe control unit. Compared with the prior art, the device has the advantages that the measurement accuracy is improved, and a plurality of parameters of the soil body can be continuously measured.

Description

technical field [0001] The invention relates to the field of soil in-situ testing, in particular to a static penetration probe combined with TDR technology, a detection system and a measurement method. Background technique [0002] Soil electrical conductivity, dielectric constant, and temperature are important parameters for evaluating soil. Soil electrical conductivity is widely used in the field of environmental rock and soil. It can be used to evaluate soil organic matter content, and can also establish the relationship between soil electrical conductivity and soil mass. The relationship between the conductivity of the pore water can monitor the pollution of the soil, and can also calculate the important parameters such as the moisture content and dry density of the soil by measuring the dielectric constant of the soil. As one of the main factors affecting the consolidation and creep characteristics of rock and soil materials, temperature can not be ignored on the deform...

AI Technical Summary

Problems solved by technology

However, it cannot measure the conductivity, dielectric constant and temperature in the deep soil in situ

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