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高速铁路无砟轨道开通运营后出现的路基沉降超标问题,直接影响线路的平顺性。通过对无砟轨道路基沉降整治思路分析,确定了注浆抬升的整治方案。介绍了高聚物注浆的抬升机理、机具配备、施工工艺流程、关键施工要点。工程实践表明,高聚物注浆抬升技术能够实现运营高速铁路无砟轨道结构的精确抬升,恢复沉降地段线路平顺性。
After high-speed railway ballastless track opened operation, the subgrade settlement exceeded the standard, which directly affected the smoothness of the line. Through the analysis of ballastless roadbed settlement regulation ideas, determine the grouting raise the remediation plan. The mechanism of lifting of polymer grouting, equipment of equipment, construction process and key points of construction are introduced. Engineering practice shows that polymer grouting and lifting technology can realize the accurate lifting of the ballastless track structure of high-speed railway and restore the smoothness of the line in the subsidence area.