地面核磁共振找水方法综述

地面核磁共振（NMR）找水方法是目前世界上唯一直接找水的地球物理新方法。其基本原理是在地面上利用NMR找水仪，观测、研究地层中水质子产生的NMR信号的变化规律，不打钻就可以确定各含水层的深度、厚度、单位体积含水量和孔隙度信息。NUMIS和NUMIS+输出功率高，接收灵敏度高并由PC机控制，是当今世界上最先进的直接探测地下水设备。我国应用NMR方法在前人认为是“无水区”、缺水区和常规物探找水方法难以奏效的地方找到了地下水。用NMR找水方法可以进行水文地质填图，快速圈定找水远景区、对地下水资源进行评价和确定出水井位。此外，MNR还可在水环境监测、工程无损检测等方面发挥作用。

Summary of groundwater detection with surface nuclear magnetic resonance method

Nuclear magnetic resonance(NMR) is the only geophysical method currently used to detect groundwater directly. The basic principle of groundwater detection with NMR is to observe and analyze the NMR signals produced by hydrogen proton of formations to determine information such as depth, thickness,water content per volume,and mean pore size of aquifers without drilling. NUMIS and NUMIS + are instruments of high output power, high receiver sensitivity. They are controlled by PC and are the most advanced direct groundwater detection equipment. In China groundwater has been found with NMR method in areas previously known as lack of groundwater and areas where it has been difficult to find groundwater with traditional geophysical methods. NMR groundwater detection method can be used for hydrogeological mapping, fast detection of favorable groundwater prospects, evaluation of groundwater sources,and determination of water well positions. Besides, it can play its role in monitoring of water environment and harmless detection of defects in engineering. The future efforts should be made in improving anti-interference ability of NMR equipment and increasing detection depth.