论文部分内容阅读
在铁路给水工程中,多采用大口径浅井作为集取第四纪浅层地下水的集水构筑物,其优点是井的直径大,能最大限度地集取地下水,井的容量大能储备部分消防或备用水量,水流稳定,结构简单,施工方便,利于维修和管理,便于扩大产水量的技术改造等。多大直径的浅井才称为大口径井,目前尚无明确的规定,但一般认为直径大于2.0m的浅井,通为称大口径浅井(简称大口井,下同),它有别于农田灌溉用的小口径机井,又不同于农村中生
In railway water supply projects, large-diameter shallow wells are mostly used as the water collection structures for collecting Quaternary shallow groundwater. The advantages are that the diameter of the wells is large, the groundwater can be maximally collected, and the capacity of the wells can be partially preserved. Reserve water quantity, stable water flow, simple structure, convenient construction, facilitate maintenance and management, and facilitate the technological transformation to increase water production. Large-diameter shallow wells are called large-diameter wells. There are currently no clear provisions, but it is generally believed that shallow wells with a diameter of more than 2.0m are called large-diameter shallow wells (referred to as large-bore wells, the same below). It is different from farm irrigation. The small-calibre machine well is different from the rural students.