涵洞被洪水冲失时如何进行抢修?
涵洞冲毁冲失时,按照流量的大小,路基高低,灾害情况等考虑避免或减少正式修复时的干扰,分别采取以下方法:
( 1)冲失涵管断面较小,抢修时可在冲失处 抛添块石,作为透水路堤,以便正常。
( 2) 冲失的涵管断面较大, 且经常流水, 可架设轨束粱, 保留缺口, 当涵洞冲失, 路基绝口较大时,采用正线便桥或便线便桥抢修通车。
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