【摘要】 用电测深研究地电断面、寻找隐伏多金属矿体时，以往采用ρ＿ｓ（或η＿ｓ）等值线断面图进行地质推断解释，因受浅源信号的干扰，效果差。本文提出了采用ρ＿ｓ（或η＿ｓ）差值法，能排除浅源干扰信号，反映出地电断面的相对变化，突出了深部微弱信息，取得了较好的地质解释效果。更多还原

【Abstract】 Studying the geo-electrlcal profile by method of clectrical depth-measurement to search the hid-den polymetallic deposits,it used to give deductively the geological explanation with ρ_s(or η_s)value contour pro-files.But it has not had good result because of the disturbance df signals from shallower sources.Instead,this pa-per suggests the ρ_s(or η_s)difference-value method which can exclude such disturbance and can reflect the rela-tive variation of geo-electrlc profiles.Thus the method may reveal greatly the weak informatlon of deep part of the earth and make it possible to obtain excellent result in the geologic exploration.更多还原