2 宝中线大寨岭黄土高路堤滑坡整治综述.pdfVIP

宝中线大寨岭黄土高路堤滑坡整治综述 摘 要：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。 关键词：高路堤滑坡；病害整治；抗滑桩；注浆；立体排水 Summarization on control of subgrade landslide in Baoji-Zhongwei Railway 1,2 3 4 1 5 ZHAO De-an ，WANG Tong-jun ，HUI Yu-ping ，CHEN Zhi-min ，MA Zhou-quan (1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. School of Civil Engineering, Northwest University for Nationalities, Lanzhou 730030, China; 3. Lanzhou Railway Bureau, Lanzhou 730000, China; 4. China Railway First Survey and Design Institute Group Ltd. (Lanzhou), Lanzhou 730000, China; 5. Northwest Research Institute Co., Ltd of C.R.E.C., Lanzhou 730000, China) Abstract: The high loess subgrade of Baoji-Zhongwei Railway line lied on the filled gully. The height of the loess-filled subgrade was 43 m. The problems of creepage and slippage had occurred two times since the railway line had been in operation. The engineering treatments had been performed, but the problems were not solved. In September 2001, a heavy rain caused again the sliding of the slope. Cracks initiated in the ground on the left side of the railway line and in the slope on the right side of the railway line. The settlements of the railway line and the subgrade reached about 100 mm and 300 mm, respectively. The control of the landslide was introd