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既有线铁路隧道道床病害整治场地狭小,施工时间短,受列车动荷载影响大,如何在不干扰正常运营的情况下进行处治,是相关工作者一直以来面临的难题。文章基于基床加固试验结果,研究并制定了有效的隧道道床注浆加固方案:采用水灰比为0.45的TGRM加固型注浆材料加固基床,帷幕注浆则采用水灰比为0.55的TGRM超细型注浆材料。经实际工程检验,整治效果显著。
It is a problem that the relevant workers have been facing since how to deal with the rail bed diseases in the existing railway tunnels with small construction site, short construction time and great influence on the dynamic load of the train. How to deal with it without disturbing the normal operations? Based on the results of bed reinforcement test, an effective tunnel bed grouting reinforcement scheme was studied and developed. The foundation bed was reinforced with TGRM reinforced grouting material with a water-cement ratio of 0.45. The curtain grouting method adopted TGRM with water-cement ratio of 0.55 Superfine grouting material. After the actual engineering inspection, remediation effect is remarkable.