土工基础

›› 2014, Vol. 28 ›› Issue (6): 47-50.

• 工程实录 • 上一篇    下一篇

黄石某变电站岩溶地基稳定性分析及治理

王星运，梅 涛，唐晓超，张安平   

  1. （湖北省电力勘测设计院，武汉 430040）
  • 收稿日期:2013-12-16 出版日期:2014-12-25 发布日期:2015-01-12
  • 作者简介:王星运（1982-），男，工程师，研究方向为特殊土、地质灾害研究和治理。

Stability Analysis and Mitigations of a 220 KV Transformation Station Foundations in Karst Terrains

WANG Xingyun, MEI Tao, TANG Xiaochao， ZHANG Anping   

  1. (Hubei Electrical Power Survey and Design Institute, Wuhan, 430024)
  • Received:2013-12-16 Online:2014-12-25 Published:2015-01-12

摘要： 介绍了湖北黄石冶钢220 kV变电站工程场地地貌、岩土条件以及水文地质条件，分析了场地岩溶发育形成的机理，采用岩溶地基定量评定方法和FLAC3D数值计算方法对220 kV变电站站址岩溶地基的稳定性进行分析，经过分析知该场地岩溶地基为不稳定，地表最大沉降量达到0.85 m，局部岩溶已经塌陷，需要治理。给出了简要治理措施，对类似变电站工程设计提供了参考。

关键词: 220 kV变电站工程, 岩溶地基, 稳定性分析

Abstract: The geographical, geotechnical and hydrogeology conditions of the Huangshi Yegang 220kV transformation station are discussed in this paper. The mechanism of the karst cavity formation is also analyzed. The stability of transformation foundations over the karst cavities are evaluated quantitatively by using FLAC 3D numerical analysis. The results indicate that the site is unstable and the maximum settlement at the ground surface will be 0.85 meters with a local collapse of some cavities. The mitigation measures are also presented in this paper.

Key words: 220 kV Transformation Station Project, Foundations in Karst Terrain, Stability Analysis