土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (3): 531-534.

• 测试技术 • 上一篇    下一篇

蓄滞洪区加培老堤软土地基参数确定方法研究

黄万江1，胡胜刚2   

  1. （1.安庆市水利局工程质量监督站，安徽安庆 246003；2. 长江科学院 水利部岩土力学与工程重点实验室，武汉 430010）
  • 收稿日期:2023-04-01 修回日期:2023-04-13 出版日期:2023-06-30 发布日期:2023-07-06
  • 通讯作者: 胡胜刚（1977-），男，高级工程师，研究方向为岩土工程。
  • 作者简介:黄万江（1969-），男，高级工程师，研究方向为水利工程质量监督。

Engineering Parameters Determinations for Widening Embankments over Soft Soils in Flood Storage and Detention Areas

HUANG Wanjiang1， HU Shenggang2   

  1. (1.Engineering Quality Supervision Station of Anqing Water Conservancy Bureau, Anqing 246003；
    2.Ministry of Water Resource Laboratory for Geotechnics and Key Engineering Projects, Yangtze River Scientific Research Institute, Wuhan 430010)
  • Received:2023-04-01 Revised:2023-04-13 Online:2023-06-30 Published:2023-07-06

摘要： 长江蓄滞洪区拟建堤基大部分堤段存在软土层，老堤堤基软土层经过多年固结，与堤脚外滩地或湖区的软土参数指标有所区别，拟建新堤堤身以老堤加培的方式形成。分析了拟加固工程老堤的病害特征。基于室内试验和原位测试方法，开展系列软土测试试验，根据试验结果分析了老堤堤基软土特性并确定了新建堤身稳定性优化设计参数指标建议值。基于类似工程堤防软基参数，提出了适用于待测加培堤基软土物理力学参数的估计方法，研究结果可为老堤加培形成的新堤软土参数获取提供一定指导。

关键词: 软土地基, 排水固结, 地基处理, 原位测试, 蓄滞洪区

Abstract: The proposed widened embankment for the flood storage and detention area construction project is over the soft soils. After years of consolidation, the soft soil properties under the existing embankment are different from the soft soil parameters outside the embankment influence zone. The proposed embankment body is formed by adding fill soils to the existing embankment. Firstly, the hazard characteristics of the existing embankment for the proposed reinforcement project were analyzed. Then, based on laboratory and in-situ testing methods, a series of soft soil tests were performed to determine the soft soil parameters inside and outside the existing embankment, and the recommended values of the stability optimization design parameters for the proposed embankment were determined. Finally, a new parameter determining and estimation method of the soft soil for existing embankment in the flood storage and detention areas was proposed based on the similar engineering embankment soft soil parameters. The evaluation results can provide some guidance for obtaining the parameters of the proposed embankment soft soil formed by the addition of exisitng embankment and for the design of proposed embankment.

Key words: Soft Soils, Drainage Consolidation, Foundation Treatment, Insitu test, Flood Storage and Detention Area

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