【摘要】 使用水平层电测深计算机程序，研究了３层大地中的中间高阻（或低阻）薄层的探测能力。在ｈ２／ｈ１＝１／５时，只有ρ２／ρ１大于４．５和ρ２／ρ１小于１／５，相对异常值η＞２０％，中间层才能被探测；发现相对异常值η＝２０％时，ρｓ极值对应的ＡＢ值与中间层的埋深ｈ１的关系约为：ｈ１＝ＡＢ，即最大可探测深度约为ＡＢ。更多还原

【Abstract】 The detectability of intermediate conductive and resistive thin layers in three-laycred medium has been studied by means of electrical sounding computer program. When h2/ h1 = 1 / 5, the intermediate layer can be detected, If only ρ2 / ρ2 >4.5 or ρ2 / ρ2 < 1 / 5 and the value of relative anomalies η>20 %. It is found that when η=20 %, the relationship between AB(ρsmax or ρsmin) and intermediate layer buried depth h1 is h1 = AB,i. e. the maximum detectable depth is AB.更多还原