关键词: 堤防渗漏, 磁电阻率法, 稳定电流场分布, 磁场分布

Abstract: It is of great significance to quickly determine the location information of seepage hazard for the treatment of embankments. However, in the process of magnetic weakening data processing of leakage channel, it often takes a long time to calculate the normal field of an embankment, which seriously restricts the locating efficiency of potential leakage hazards. In order to solve the above problems, based on the finite element method,  the modeling and simulation of the detection of embankment leakage by magnetometric resistivity method was carried out, and  the distribution characteristics of the internal stable current field and the external magnetic field of the embankment with different sizes were explored, and  a certain number of model databases were built. The results show that the overall fluctuation value of  y component of magnetic induction intensity in the middle part of the measurement domain is larger than that of x component and z   component, and its value decreases with the increase of the upper width of the embankment, and increases with the increase of the slope angle or the height of the embankment. According to the distribution characteristics summarized in this paper,  the missing normal field of embankment in the database can be predicted, and the mean relative error of the embankment model is 9.63%.

Key words: embankment leakage, magnetometric resistivity method, stable current field distribution, magnetic field distribution