在毛主席无产阶级革命路线的指引下,我国铁路建设事业飞跃发展。采用管井开发地下水作为铁路供水水源日益增多,根据西北几条干线不完全统计,已建管井约70余座。这些管井大多分布在山前倾斜平原,河流冲积层地区,以及凹陷盆地边缘。一般井深40～120米; Under the guidance of Chairman Mao’s proletarian revolutionary line, China’s railway construction has seen rapid development. The use of pipe wells for the development of groundwater as a rail water supply source is increasing. According to the incomplete statistics of several trunk lines in the northwest, there are about 70 wells built. Most of these tube wells are located in the piedmont plains, river alluvium, and depression basin margins. General well depth 40 to 120 meters;