铁岭地区东部山区一些河道内沉积很厚的砂卵石层,渗水能力很强,在其流域内虽有很多清水,泉水、洪水山沟,可是这些清泉流不到沟口就渗进砂层,变成了地下水。这种潜伏的地下水流叫潜流。在河床的砂砾层里,垂直河流方向或接近垂直方向,打一道不透水截水墙,堵住潜流的去 Although there are a lot of water, spring water and flood ravines in some rivers in the eastern mountainous area of ​​Tieling, there are many thick sand and gravel layers deposited in some rivers in the east of Tieling. However, Groundwater. This latent groundwater flow is called submarine flow. Gravel layer in the river bed, the vertical direction of the river or close to the vertical direction, hit a impermeable cut-off wall, blocking the potential to go