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据调查,我国铁道现有隧道4,000余座,总延长2,000多公里,有三分之一的隧道存在不同程度的漏水。绐铁路运输生产带来很多障碍。夏季潮湿,造成钢轨配件的锈蚀。冬季结冰侵入限界,需要组织打冰队打冰。冰柱还会使电化区段接触网停电,跳闸。建筑物冻胀损坏也时有发生。要保证这些设备状态完好,每年都必须付出很大的人力财力,甚至造成事故,中断铁路运输。
According to the survey, there are more than 4,000 existing tunnels in our country with a total extension of more than 2,000 kilometers. One third of the tunnels have different levels of water leakage.绐 Rail transport brings many obstacles. Summer wet, causing corrosion of rail accessories. Winter freezing invaded limits, the need to organize ice team fight ice. Icicles will also make the electrification section contact net power failure, tripping. Buildings frost damage also occurs from time to time. To ensure that the equipment is in good condition, great human and financial resources must be paid every year, causing accidents and interrupting railway transportation.