长江科学院院报 ›› 2015, Vol. 32 ›› Issue (2): 98-102.DOI: 10.3969/j.issn.1001-5485.2015.02.020

• 岩土工程 • 上一篇    下一篇

某水电站开挖岩质边坡稳定分析及加固措施优化

柏俊磊1,王瑞红2,王乐华2,汤开宇2   

  1. 1. 中国电建集团 西北勘测设计研究院有限公司,西安 710065;
    2. 三峡大学 土木与建筑学院,湖北 宜昌 443002
  • 收稿日期:2013-09-30 出版日期:2015-02-01 发布日期:2015-02-01
  • 作者简介:柏俊磊(1988-),男,湖北十堰人,助理工程师,主要从事岩石边坡工程设计与理论方面的研究,(电话)18392151889(电子信箱)bjl8810@126.com。
  • 基金资助:

    国家自然科学基金项目(51109120,50909052,51279091)

Stability Analysis and Reinforcement Optimization for an Excavated Rock Slope

BAI Jun-lei1,WANG Rui-hong2,WANG Le-hua2,TANG Kai-yu2   

  1. 1.Power China Xibei Engineering Corporation Limited, Xi’an 710065, China;
    2.College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China
  • Received:2013-09-30 Published:2015-02-01 Online:2015-02-01

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摘要：

某水电站泄洪洞进水口边坡为典型的岩质高陡开挖边坡,其稳定性对水电站的安全施工及运行影响重大。为此,建立了泄洪洞所在开挖高边坡的三维有限元模型,并运用有限差分软件进行稳定性分析计算;综合考虑边坡在天然、开挖、卸荷、暴雨蓄水、地震工况下的应力、应变的大小及分布状况,同时结合典型剖面边坡二维极限平衡计算,计算结果中的安全系数大小,综合分析判断泄洪洞进口边坡的稳定性状况;最后结合稳定性分析结果对边坡的加固措施进行了优化分析。成果为工程施工提供参考依据。

关键词: 边坡, 稳定性, 有限元, 极限平衡, 锚固, 优化

Abstract:

The intake slope of the spillway tunnel of a hydropower station is a typical high steep rock excavation slope. Its stability has a significant impact on the safe construction and operation of the station. In this research, 3-D finite element model is established for the slope and stability analysis is conducted by using finite difference software. The stress, strain, and the size and distribution of plastic zone in natural condition, excavation and deloading condition, rainstorm and seismic conditions are comprehensively considered in the model. Furthermore, according to the safety factor from two-dimensional limit equilibrium calculation for typical profile, the slope stability is determined. Moreover, the reinforcement measures are optimized based on the stability calculation results.

Key words: slope, stability, finite element, limit equilibrium, anchorage, optimization

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