一、基本知识潜水是指埋藏在地面下第一个隔水层之上的地下水,如图1中。潜水有一个自由水面,由高处向低处渗流,一般来说,下潜水面的倾斜方向与地势倾斜方向一致,潜水与地表水体之间经常相互补给,如图1所示。等潜水位线是地下潜水面上的等高线,等潜水位线数值与等高线数值一样均为海拔高度。 I. Basic knowledge Diving refers to the groundwater buried on the ground below the first aquifer, as shown in Figure 1. Diving has a free surface and seeps from high to low. Generally speaking, the direction of the sloping sloping surface is the same as the direction of the sloping terrain. The snorkeling and surface water bodies are often complementary to each other, as shown in Figure 1. Such as the dive line is the contour of the surface of the underground dive. The values ​​of the dive line and other contours are the same as the altitude.