The results of mathematical modeling of electrical soundings with the AMNB (Schlumberger, Wenner) arrays and the proposed combined AMN + NMA array above horizontally layered medium and including a ball medium are presented. It is shown that the combined array has two main advantages: the current penetration depth is greater at the same position of outer electrodes of the considered arrays; edge effects are smaller due to bilateral measurements with respect to the central receiving electrode; a geoelectric inhomogeneity is delineated at the pseudosections of the apparent resistivity. The quantitative interpretation of the sounding curves obtained with the AMN + NMA array can be carried out by an existing software for inversing of data of the symmetric Wenner (AMNB) array with electrode spacing equal to 1/3 of supplying dipole. The results of application of the new technique of electrical soundings by the combined array in the study of state of the dam on sedimentation tank of liquid chemicals are presented. On the geoelectric sections and the pseudosections of the apparent resistivity, areas of increased electrical conductivity in body and base of the dam are detected. Filtration of water from the reservoir occurs through these areas. Soundings with the AMN + NMA array are expedient for studying of a geological medium at small depths where the medium is horizontally-heterogeneous, and also for solving of engineering-geological problems.

中文翻译：

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电测探新技术：土坝状态研究的理论模型与实验应用

提出了使用AMNB（Schlumberger，Wenner）阵列和拟议的AMN + NMA组合阵列在水平分层介质上方并包括球形介质对电测深进行数学建模的结果。示出了组合阵列具有两个主要优点：在所考虑的阵列的外部电极的相同位置处的电流穿透深度更大；由于相对于中央接收电极的双向测量，边缘效应较小；在视电阻率的伪剖面处描绘了地电不均匀性。用AMN + NMA阵列获得的探测曲线的定量解释可以通过现有的软件进行，该软件可以对电极间距等于供电偶极子1/3的对称Wenner（AMNB）阵列的数据进行反演。提出了组合阵列电测深新技术在液体化工沉淀池大坝状态研究中的应用结果。在表观电阻率的地电部分和伪部分上，检测到坝体和坝基中电导率增加的区域。来自水库的水通过这些区域过滤。使用AMN + NMA阵列进行测深，对于研究水平方向上非均质的小深度地质介质以及解决工程地质问题是很方便的。在表观电阻率的地电部分和伪部分上，检测到坝体和坝基中电导率增加的区域。来自水库的水通过这些区域过滤。使用AMN + NMA阵列进行测深，对于研究水平方向上非均质的小深度地质介质以及解决工程地质问题是很方便的。在表观电阻率的地电部分和伪部分上，检测到坝体和坝基中电导率增加的区域。来自水库的水通过这些区域过滤。使用AMN + NMA阵列进行测深，对于研究水平方向上非均质的小深度地质介质以及解决工程地质问题是很方便的。