土工基础

›› 2015, Vol. 29 ›› Issue (4): 94-97.

• 工程实录 • 上一篇    下一篇

安徽巢湖裕溪节制闸主要工程问题研究

汪智勇   

  1. (巢湖管理局水利规划勘察设计院，安徽巢湖 238000)
  • 收稿日期:2015-03-24 出版日期:2015-08-20 发布日期:2015-11-06
  • 作者简介:汪智勇（1965-），男，高级工程师，主要研究方向为地质勘察。

Engineering Aspects of Yuxi Regulation Gate in Chaohu, Anhui Province

WANG Zhiyong   

  1. (Hydrology and Irrigation Planning Survey and Design Institute, Chaohu Administration, Chaohu 238000)
  • Received:2015-03-24 Online:2015-08-20 Published:2015-11-06

摘要： 通过对安徽省巢湖裕溪节制闸水文、自然条件、地质构造与地震、工程地质条件的介绍分析，对土体物理、力学指标进行计算，得出巢湖裕溪节制闸由于地层承载力较低，在上部荷载的作用下，易导致闸基等建(构)筑物基础沉降变形问题。渗透稳定问题主要表现为管涌，土体在渗流作用下，会使土体中的某些颗粒移动或颗粒成分、结构发生改变，产生渗透变形或渗透破坏。河道抗冲刷及岸坡稳定影响，对建(构)筑物抗滑稳定与安全也极为不利。根据存在的三个方面问题，提出巢湖裕溪节制闸地基处理应采用管桩，水上作业，渗径加大，补抛块石等方案。

关键词: 巢湖裕溪闸, 地质条件, 地基, 处理方案

Abstract: The Yuxi Hydraulic Regulation Gate is suffering excessing settlement under various loading conditions. The natural conditions, hydraulic, geological tectonic structure, seismic and geotechnical conditions at the site are reviewed. The physical and mechanical properties underneath the gate have been evaluated. The seepage stability is mainly represented by the piping stability. Under the seepage loading conditions, the soil particles, fabric and structures might have deformed and therefore, lead to the seepage related displacement or failure. The evaluation eliminates the potential of liquefaction under the seismic conditions. The scour conditions on the stabilities of the riverbed channel and the hydraulic structures are also important. The foundation remediation plan was proposed based on the stability evaluations. The adopted solutions are: concrete pipe pile installation on the water; seepage path increase and installation of riprap rocks.

Key words: Yuxi Gate, Geological Conditions, Structure Foundations, Remediation Plan