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宝中铁路K154+200大寨岭黄土高路堤位于冲沟的堆填土之上,填土路堤高度达43 m。针对路基下沉和侧移病害曾两次采取不同方案进行整治,但未能彻底解决该高路堤边坡的蠕动滑移问题。2001年9月宝中线K154位置再次出现连续阴雨,线路左侧地面以及线路右侧坡面出现多处裂缝,线路下沉约100 mm,路基下沉约300 mm。同时,路堤护坡上出现了似泉眼的渗水现象。结合地质钻探、现场调查与试验等结果分析,认为水是该滑坡形成的主要原因,路堤病害定性为堆填土滑坡。在科研分析的基础上,根据对病害现象及形成原因的分析,决定采取抗滑桩支挡、路基下及滑带土注浆加固和设置立体排水系统等综合治理方案。工程实施后,经过近两年的运营检验和跟踪监测,证明整治效果良好。此工程实例对类似工程具有很好的参考价值。
Baozhong Railway K154 + 200 Dazhailing High Loess Embankment is located above the gully landfill, embankment embankment height of 43 m. For subgrade subsidence and lateral disease have twice adopted different programs for remediation, but failed to completely solve the high embankment slope creep slip problem. In September 2001, there was continuous rainy weather again at K154 on the Baozhong line. There were many cracks on the left side of the line and on the right side of the line, with the line sinking about 100 mm and the subgrade sinking about 300 mm. At the same time, there appeared water seepage phenomenon on the embankment revetment. Based on the analysis of the results of geological drilling, field investigation and test, water is the main reason for the landslide formation. The embankment disease is characterized by landfill landslide. On the basis of scientific research and analysis, based on the analysis of the phenomenon of the disease and the reasons for the formation, we decided to take comprehensive control measures such as anti-slide pile support, grouting reinforcement under the subgrade and sliding zone soil and setting up a three-dimensional drainage system. After the implementation of the project, after nearly two years of operation inspection and follow-up monitoring to prove that the remediation effect is good. This project has good reference value for similar projects.