长江科学院院报 ›› 2017, Vol. 34 ›› Issue (8): 79-83.DOI: 10.11988/ckyyb.20160442

• 岩土工程 • 上一篇    下一篇

汝郴高速公路高陡斜坡稳定性分析及治理措施

周英博1, 张军2, 任伟中1   

  1. 1.中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,武汉 430071;
    2.中交第二公路勘察设计研究院有限公司,武汉 430056
  • 收稿日期:2016-05-06 修回日期:2016-05-27 出版日期:2017-08-01 发布日期:2017-08-18
  • 作者简介:周英博(1988-),男,湖北黄石人,博士研究生,研究方向为边坡的变形破坏机理与加固技术,(电话)18062773656(电子信箱)yingbozhou@126.com。

Stability Analysis and Treatment Measures for High and Steep Slope of Rucheng-Chenzhou Expressway

ZHOU Ying-bo1, ZHANG Jun2, REN Wei-zhong1   

  1. 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics,Chinese Academy of Sciences, Wuhan 430071,China;
    2.CCCC Second Highway Consultants Co., Ltd.,Wuhan 430056, China
  • Received:2016-05-06 Revised:2016-05-27 Published:2017-08-01 Online:2017-08-18
  • Contact: 任伟中(1967-),男,浙江金华人,研究员,博士,研究方向为岩土工程,(电话)18971075006(电子信箱)wzren@whrsm.ac.cn。
  • Supported by:
    国家自然科学青年基金项目(51008298)

摘要: 汝郴高速公路高陡斜坡位于公路K65+410—K65+680段。2011年3月以来,该高陡斜坡深部发生位移,并且这些变形在不断发展,需要进行人工治理。通过对斜坡地质环境条件和变形机理初步分析,建立了该高陡斜坡典型剖面的多种潜在滑面的稳定性计算模型,并对该高陡斜坡进行了多滑面多工况极限平衡稳定性分析。在此基础上提出了坡顶削坡卸载、坡脚堆载反压和锚杆加固斜坡浅表的治理方案,可为高陡斜坡治理工程设计提供依据。该边坡在经过治理后至今4 a内,没有再发生过大规模变形,证明了该治理方案的合理性.

关键词: 汝郴高速公路, 高陡斜坡, 多滑面, 稳定性分析, 治理措施

Abstract: The high and steep slope of Rucheng-Chenzhou expressway is located between segment K65+410 and K65+680. Since March 2011, deep displacement had occurred in the slope in need of treatment measures. In this article, a slope model with multiple potential slip surfaces is built on the thorough understanding of the site's geological conditions and the deformation mechanisms. The slope stability under different conditions is calculated with the limit equilibrium method. On this basis, treatment measures are put forward, including cutting slope, surcharge reaction and anchor bolts. The results offer basis for the design of high-steep slope treatment.Within 4 years after the treatment, no large-scale deformation occurred, which indicates that the high-steep slope treatment is successful.

Key words: Rucheng-Chenzhou expressway, high-steep slope, multiple slip surfaces, stability analysis, treatment

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