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核磁共振（NMR）找水方法是目前唯一直接找水的物探新方法，该方法可以探查各种类型的地下水。本文仅论述了在岩溶发育区常规电阻率方法找水时遇到的地质干扰、NMR找水方法的原理、仪器的组成，并以实例说明了MMR找水方法探查岩溶水的效果。
Nuclear magnetic resonance (NMR) water finding is the only new geophysical method to find water directly, which can probe various types of groundwater. This article only discusses the geological interference encountered in the conventional resistivity method in karst development zone, the principle of NMR water-finding method and the composition of the instrument. An example is given to illustrate the effect of MMR water-finding method on exploring karst water.