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Abstract

Water damage to embankments serious ly affects the normal operation of highways,so it is extremely important to ensure the stability of the embankment.In addition,it is necessary to analyze the mechanism and study the safety control measures for water-damaged landslides of the embankment.A highway subgrade embankment was studied,and the causes and formation mechanism of the landslide were qualitatively analyzed based on the on-site deformation monitoring and stability calculation.Then,the stability coefficients of different reinforcement schemes were calculated.An appropriate reinforcement scheme was recommended by considering the project cost,construction technology,and construction period.The results indicate that uneven settlement of the embankment stratum is the fundamental cause of landslides under the influence of continuous rainfall.As rainfall accumulates in the depression on the left side of the embankment and penetrates into the soil layer,swelling and softening of clay layers and blockage of drainage channels further accelerate the formation of landslides.The composite reinforcement scheme of steel pipe piles and backfill back pressure meets the stability requirements,and the reinforcement effect is good.

Publication Date

6-27-2024

DOI

10.14048/j.issn.1671-2579.2024.03.003

First Page

26

Last Page

34

Submission Date

February 2025

Reference

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[9]张玉 ,徐卫亚 ,邹丽芳 ,等.降雨条件下大型滑坡体渗流稳定性分析 [J].岩土力学 ,2013 ,34(3):833-841.ZHANG Yu ,XU Weiya ,ZOU Lifang ,et al .Analysis of seepage stability of large-scale landslide under rainfall condition [J].Rock and Soil Mechanics ,2013 ,34(3):833-841.
[10]常金源 ,包含 ,伍法权 ,等.降雨条件下浅层滑坡稳定性探讨[J].岩土力学 ,2015 ,36(4):995-1001 .CHANG Jinyuan ,BAO Han ,WU Faquan ,et al .Discussion on stability of shallow landslide under rainfall [J].Rock and Soil Mechanics ,2015 ,36(4):995-1001 .
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[13]靳青 .西北地区公路水毁成因及防治措施浅析 [J].公路 ,2014 ,59(12):222-225.JIN Qing .Analysis on the causes and prevention measures of highway water damage in Northwest China [J].Highway ,2014 ,59(12):222-225.
[14]杨欣 .降雨入渗条件下含软弱夹层路堑高边坡渗流特性数值分析 [J].中外公路 ,2020 ,40(4):38-42.YANG Xin .Numerical analysis of seepage characteristics of high slope with soft interlayer under rainfall infiltration condition [J].Journal of China & Foreign Highway ,2020 ,40(4):38-42.
[15]夏怡 ,柳治国 ,邹飞 ,等.降雨对山区高速公路弃土场边坡稳定性影响分析 [J].中外公路 ,2022 ,42(1):7-11.XIA Yi ,LIU Zhiguo ,ZOU Fei ,et al .Analysis of influence of rainfall on spoil slope stability of mountainous highway[J].Journal of China & Foreign Highway ,2022 ,42(1):7-11.
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[19]王晨 ,方正 ,尹浩然 ,等.强降雨地区超宽高速公路雨水排除方法及积水改善措施研究 [J].中外公路 ，2021 ,41（5） ：27-30.WANG Chen ,FANG Zheng ,YIN Haoran ,et al .Study on drainage method and ponding improvement measures of super wide expressway in heavy rainfall area [J].Journal of China & Foreign Highway ,2021 ，41(5):27-30.

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