地下水是指赋存于地面以下岩石空隙中的水,狭义上是指地下水面以下饱和含水层中的水。在国家标准《水文地质术语》中,地下水是指埋藏在地表以下各种形式的重力水。国外学者认为地下水的定义有三种:一是指与地表水有显著区别的所有埋藏在地下水的水,特指含水层中饱水带的那部分水;二是向下流动或渗透,使 Groundwater refers to the water that is found in the rocky voids below the ground, in the narrow sense of the water in saturated aquifers below groundwater. In the national standard “hydrogeological terms,” ​​groundwater refers to various forms of gravity water buried below the surface. Foreign scholars believe that there are three definitions of groundwater: First, refers to all significant difference with the surface water buried in groundwater, especially in the aquifer that part of the water; second is down or infiltration, so that