我们在东北、华北六条铁路线的管井调查中,发现许多管井使用年限短,粉细砂含水层中的管井普遍地存在涌砂或堵塞,有些井建成后,因涌砂严重,未使用即废;许多井滤水管缠镀锌铁丝,在使用7～11年后,因缠丝腐蚀涌砂而废。不仅浪费了资金,且影响运输安全,为此提出几点看法。 In the investigation of tube wells in the six railway lines in the northeast and north China, we found that many wells have a short service life. The wells in the silty sand aquifer generally have grit or clogging. After some of the wells are completed, they are seriously used for sand gushing and are not used. Many wells are wrapped with galvanized iron wire, and after 7 to 11 years of use, they are wasted due to corrosion of the wire. Not only was the money wasted, but also the safety of transportation was affected, and several points were made for this purpose.