Abstract
Abstract The fractures with fluid flow will lead to the damage of rock cave artifacts and the detection of millimeter-scale fractures is a challenge in artifact conservation. The fluid flow in fractures and the infiltration in surrounding rocks based on hydrological modeling was simulated first. Based on the results, electric permittivity and conductivity models at different time lapse were established, and a series of models with different rotation angles were generated through coordinate rotation for full-polarimetric ground penetrating radar (FP-GPR) simulations. Subsequently, the relationships between H, α, Ps , Pd , and Pv parameters and measurement angles and infiltration time are analyzed. The results indicate that α, Ps and Pd have good variation consistency with infiltration time, while H and Pv do not show a significant relationship with the infiltration time. In addition, the analysis results of the five parameters all indicate that the measurement angle has a significant impact on the parameters at the beginning of infiltration, which is related to the frequency of the adopted electromagnetic waves. The results provide important theoretical support and technical guidance for the use of time-lapse FP-GPR to detect fractures with fluid flow in field cases.
Published Version
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