越来越多的岩溶问题影响铁路隧道安全，岩溶发育的不规律性给探测、预报带来了困难。
More and more problems of karst influence railway tunnel safety, the irregular character of karst brings difficulties to survey.
调查表明，隧道变形病害与所在斜坡出现滑坡现象密切相关，并且已严重危及铁路行车安全。
The survey shows that deformation and fracture of tunnel is correlative with landslide intimately and endangers security of trains running seriously.
对危险截面的强度验算表明，使用该支护结构的铁路隧道硐室稳定、安全度高。
The calculation of the strength of dangerous sections testifies that the railway tunnel with this support structure has high stability and safety.
调查表明，隧道变形病害与所在斜坡出现滑坡现象密切相关，并且严重危及铁路行车安全。
Ths survey shows that deformation and fracture of tunnel is correlative with landslide intimately and endangers security of trains running seriously.
目前铁路运营隧道病害状况严重，有些已达到了威胁铁路行车安全的程度。
The present damage situation of railway operation tunnels is very serious, sometimes they even threaten the traffic safety of the trains passing through the tunnel.
铁路隧道防火防爆对于确保隧道完好、行车安全具有重要意义。
Fire and explosion prevention in railway tunnel is of great significance for ensuring good tunnel condition and traffic safety.
铁路隧道防火防爆对于确保隧道完好、行车安全具有重要意义。
Fire and explosion prevention in railway tunnel is of great significance for ensuring good tunnel condition and traffic safety.
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