长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11): 7-11.DOI: 10.3969/j.issn.1001-5485.2014.11.0022014,31(11):12-16,21

• 岩石力学特性与试验 • 上一篇    下一篇

锦屏一级拱坝岩体抗剪强度参数取值研究

饶宏玲1,2,曾纪全1,2,庞明亮1,2,刘忠绪1,2   

  1. 1. 中国电建集团 成都勘测设计研究院有限公司,成都 610072;
    2. 国家能源水电工程技术研发中心 高混凝土坝分中心,成都 610072
  • 收稿日期:2014-08-02 修回日期:2014-11-05 出版日期:2014-11-01 发布日期:2014-11-05
  • 作者简介:饶宏玲(1963-),女,四川成都人,教授级高级工程师,主要从事水工设计工作,(电话)13880559650(电子信箱)1426831688@qq.com。

Determination of Shear Strength Parameters of Rock Mass of Jinping Arch Dam

RAO Hong-ling1,2,ZENG Ji-quan1,2,PANG Ming-liang1,2,LIU Zhong-xu1,2   

  1. 1.Power China Chengdu Engineering Corporation Limited,Chengdu 610072,China;
    2. High Concrete Dam Affiliation of National Hydropower Technology Research & Development Center,Chengdu 610072,China
  • Received:2014-08-02 Revised:2014-11-05 Online:2014-11-01 Published:2014-11-05

摘要:

锦屏一级拱坝为世界最高拱坝,也是世界已经建成的最高大坝,地形地质条件极其复杂。通过锦屏一级拱坝岩体抗剪强度试验、试验特征点选取、参数统计方法以及典型滑块稳定计算等多方面的分析,对岩体抗剪强度参数的取值方法进行深入研究。研究结果表明对坝基岩体抗剪强度参数标准值的取值,国内外不同规范的规定有一定差异;岩体抗剪强度试验曲线上的某些特征点可采用易于确定的特征点经换算后得出;对同一工程,采用不同的抗剪强度参数统计方法,得到的抗剪强度参数会有一定差异,可能造成对坝肩抗滑稳定不一样的评价。研究成果可供类似工程借鉴参考。

关键词: 锦屏一级拱坝, 抗剪强度参数, 参数取值方法, 坝肩稳定

Abstract:

Jinping arch dam is the highest arch dam in the world, and is also the highest dam has been built in the world. It has complex topographic and geological conditions. Methods of determining the shear strength parameters of rockmass are researched by shear tests, test feature point selection, parameter statistics, as well as typical block stability analysis. Research results indicate that the selection of standard value of shear strength parameters varies in different specification requirements in China and abroad. Some feature points on the shear test curve can be determined through the feature points obtained easily. The shear strength parameters of the same project obtained by different methods are different, which may lead to different evaluation results of anti-sliding stability of dam abutment. The research results provide reference for similar engineering.

Key words: Jinping-I arch dam, shear strength parameter, method of determining parameter, abutment stability

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