土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (6): 663-666.

• 工程实录 • 上一篇    下一篇

山区高速公路弃土堆积体稳定性评价及工程措施建议

李 春1，梁栋才2，3，杨晓泉4   

  1. (1.云南玉临高速公路建设有限责任公司，云南临沧677000；2.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；3.中国科学院大学，北京 100000；4.云南省交通运输厅路网监测与应急指挥中心，昆明 650041)
  • 收稿日期:2020-05-19 修回日期:2020-07-08 出版日期:2020-12-30 发布日期:2020-12-25
  • 作者简介:李 春（1976-），男，高级工程师，研究方向为公路工程。
  • 基金资助:
    云交科教［2018］45 号

Stability Evaluation and Engineering Mitigation Recommendations of Waste Soil Storage Yard for an ExpresswayProject in Mountain Area

LI Chun1, LIANG Dongcai2,3， YANG Xiaoquan4   

  1. (1.Yunnan Yulin Expressway Construction Co., Ltd, Lincang 677000; 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071; 3.University of Chinese Academy of Sciences, Beijing 100049; 4.Highway Surveillance &Emergency Respond Center, Yunnan Department of Transportation, Kunming 650041)
  • Received:2020-05-19 Revised:2020-07-08 Online:2020-12-30 Published:2020-12-25

摘要： 弃土堆积体是山区高速公路建设中普遍存在的，其稳定性直接影响了路基修筑和相应的构筑物。以云南某高速公路改扩建工程的弃土堆积体为研究对象，采用现场调研、室内试验和数值模拟相结合的方法，结合设计方案及实际施工需求，提出了相应的削坡整形方案。通过自然、饱水、考虑软弱夹层和上游不同积水工况下的边坡稳定性分析，证明此削坡方案满足工程建设需求。同时为了防止表面冲刷以及上游积水带来的危害，提出相应的排水措施。

关键词: 弃土堆积体, 高速公路, 削坡整形, 稳定性, 排水措施

Abstract: Waste soil storage yards are frequently encountered in the expressway construction in mountainous areas. The stability of these storage yards directly affects the construction of the adjacent highway subgrade and other structures. This paper presents the stability investigations of waste soil storage yard for a highway widening project in Yunnan Province. Throughout the field investigation, laboratory tests, numerical simulation on the storage yard, actual design details and constructability, the waste soil storage slope were rearranged. The recommended waste soil slope was analyzed under various conditions, such as, normal working, saturated, weak waste soil lenses and different levels of perched water. It is also recommended that the drainage measures to be installed at the surface of the proposed waste soil slope to minimize the stability risks induced by the erosion and the accumulation of the perched water.

Key words: Waste Soil Storage, Expressway, Slope Reshaping, Stability, Drainage Measures

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