土工基础

›› 2019, Vol. 33 ›› Issue (4): 414-417.

• 工程实录 • 上一篇    下一篇

贵州省山区高速公路弃土场边坡稳定性分析

潘 元1，邹 飞2   

  1. （1.贵州交通建设集团有限公司,贵阳 550001;2.贵州省交通运输厅,贵阳 550001）
  • 收稿日期:2019-04-23 修回日期:2019-05-10 出版日期:2019-08-20 发布日期:2019-08-16
  • 通讯作者: 邹 飞（1983-），男，博士，研究员，研究方向为高速公路项目建管理。
  • 作者简介:潘 元（1982-），男，助理工程师，研究方向为高速公路项目建设及项目投资管理。

Slope Stability Analysis for a Spoil Site of Expressway in Mountainous Areas of Guizhou Province

PAN Yuan1, ZOU Fei2   

  1. (1.Guizhou Transportations Construction Group Co. Ltd., Guiyang 550001;
    2.Guizhou Department of Transportation, Guiyang 550001)
  • Received:2019-04-23 Revised:2019-05-10 Online:2019-08-20 Published:2019-08-16

摘要： 山区高速公路弃土场引发的滑坡、泥石流等地质灾害时有发生，已成为山区公路建设中比较突出的安全问题，因此，分析评价弃土场边坡的稳定性具有重要的工程意义。以贵州省某高速公路K65+000左侧40 m弃土场为例，通过现场调查、现场和室内试验及刚体极限平衡计算方法对弃土场边坡的稳定性进行了分析，合理评价了弃土场边坡的稳定性。研究结果表明：不同工况条件下弃土场边坡的整体和局部稳定性系数均能满足弃土场边坡稳定安全要求，在降雨等不利条件下不会产生滑移失稳。建议完善弃土场排水系统，并对覆土边坡进行植草绿化，以提高弃土场边坡的稳定性。

关键词: 山区高速公路, 弃土场, 现场调查, 稳定性分析

Abstract: Landslides, debris flows, and other geological hazards induced by the spoil sites of mountain expressways were frequently occurred, which have become a serious safety concern in the highway construction. Therefore, to analysis and evaluate the stability of the spoil sites have engineering significance. A spoil site, which is on the 40 meters left at Station K65+000 of an Expressway in Guizhou Province, was presented as a case study. The stability of this spoil site was evaluated based on the field and laboratory geotechnical investigations and the limit equilibrium of rigid body method. The results indicate that, the spoil site was stable under various conditions include heavy precipitations. Other engineering recommendations, such as, improve the drainage system at the spoil site and cover the entire site with grass, are also proposed in the paper.

Key words: mountain expressway, spoil sites, field investigation, stability analysis