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通过在中山植物园陆域水文观测站研究区埋设电极,监测野外研究区的电阻率变化和自然电位分布,可以获取非饱和带的水分分布和运移信息。结果表明:研究区的低电阻率区域也是自然电位异常区域,即含水量异常引起自然电位异常;视电阻率差值图显示的电阻率变化区域(即含水量变化的区域)与自然电位正异常区域吻合,水分的运移引起自然电位的异常。通过监测自然电位,可以同时获取了水分分布和水分运移情况。另外,本文借助自然电位概率成像方法,获取异常体的深度信息。
The distribution and migration of water in the unsaturated zone can be obtained by laying electrodes in the research area of the Land Hydrological Observatory of Zhongshan Botanical Garden and monitoring the change of resistivity and natural potential in the field. The results show that the low resistivity region of the study area is also a natural anomalous region, that is, the abnormality of natural water potential caused by abnormal water content. The region of resistivity change (ie, the region of water content change) indicated by the apparent resistivity difference map is positively correlated with the natural potential Regional anastomosis, the migration of water caused by abnormal natural potentials. By monitoring the natural potential, both the moisture distribution and the moisture transport can be obtained simultaneously. In addition, this paper uses the natural potential probability imaging method to obtain the depth of abnormal body information.