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为实现水下浅层介质二维电阻率映像法探测,一种走航式水下多道电阻率探测系统(NURSS)被研制开发.该系统由主控系统、定位系统、多道电缆及拖体组成.多道电缆长100m,装配有10个不极化电位测量极(可扩展)和4个供电极,可实现二极和偶极装置测量,电位采集采用并行采集技术.以水库库底渗漏探测为目标的数值分析和应用实例表明该系统比水面电阻率法具有更高的分辨率,可精确探测库底渗漏通道位置与延展深度,是实现水下浅层目标探测的有效工具.
In order to realize the 2D resistivity mapping method for underwater shallow media, a cruise-type underwater multichannel resistivity detection system (NURSS) was developed.The system consists of main control system, positioning system, multi-channel cable and drag Body composed of multi-channel cable length of 100m, equipped with 10 non-polarization potential measuring pole (expandable) and 4 for the electrode, the dipole and dipole devices can be measured, the potential acquisition using parallel acquisition technology to reservoir bottom Leakage detection as the goal of numerical analysis and application examples show that the system has a higher resolution than the surface resistivity method, which can accurately detect the bottom of the reservoir leakage path location and depth of extension, is to achieve underwater shallow target detection tool .