某水电站开挖岩质边坡稳定分析及加固措施优化

柏俊磊; 王瑞红; 王乐华; 汤开宇

doi:10.3969/j.issn.1001-5485.2015.02.020

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raybet体育在线院报 ›› 2015, Vol. 32 ›› Issue (2) : 98-102. DOI: 10.3969/j.issn.1001-5485.2015.02.020

岩土工程

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

作者信息 +

Stability Analysis and Reinforcement Optimization for an Excavated Rock Slope

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

Author information +

文章历史 +

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。

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.

导出引用

柏俊磊,王瑞红,王乐华,汤开宇. 某水电站开挖岩质边坡稳定分析及加固措施优化[J]. raybet体育在线院报. 2015, 32(2): 98-102 https://doi.org/10.3969/j.issn.1001-5485.2015.02.020

BAI Jun-lei,WANG Rui-hong,WANG Le-hua,TANG Kai-yu. Stability Analysis and Reinforcement Optimization for an Excavated Rock Slope[J]. Journal of Changjiang River Scientific Research Institute. 2015, 32(2): 98-102 https://doi.org/10.3969/j.issn.1001-5485.2015.02.020

中图分类号： TU47

参考文献

[1] 许建聪,尚岳全,陈侃福,等. 顺层滑坡弹塑性接触有限元稳定性分析.岩石力学与工程学报,2005,24(13):2231-2236. (XU Jian-cong, SHANG Yue-quan, CHEN Kan-fu, et al. Elastoplastic Contact FEM Analysis of Bedding Landslide Stability. Chinese Journal of Rock Mechanics and Engineering, 2005,24(13):2231-2236.(in Chinese))
[2] 刘立平,姜德义,郑硕才,等. 边坡稳定性分析方法的最新进展.重庆大学学报:自然科学版,2000,23(3):115-118. (LIU Li-ping,JIANG De-yi,ZHENG Shuo-cai,et al. Recent Progress of the Slope Stability Analysis Methods. Journal of Chongqing University: Natural Science, 2000, 23(3): 115-118.(in Chinese))
[3] 李建林,王乐华,刘杰,等.岩石边坡工程[M].北京:中国水利水电出版社,2006.(LI Jian-lin, WANG Le-hua, LIU Jie, et al. Rock Slope Engineering. Beijing: China Water Power Press,2006.(in Chinese))
[4] 佴磊,徐燕,代树林,等.边坡工程.北京:科学出版社,2010.(ER Lei,XU Yan,DAI Shu-lin,et al. Slope Engineering . Beijing : Science Press, 2010 . (in Chinese))
[5] 郑颖人,赵尚毅,张鲁渝. 用有限元强度折减法进行边坡稳定分析. 中国工程科学,2002,4(10):57-61. (ZHENG Ying-ren,ZHAO Shang-yi,ZHANG Lu-yu. Slope Stability Analysis by Strength Reduction FEM. Engineering Science,2002,4(10):57-61.(in Chinese))
[6] 陈祖煜. 土质边坡稳定分析—原理·方法·程序. 北京:中国水利水电出版社,2003. (CHEN Zu-yu. Stability Analysis of Soil Slope: Principles, Methods, and Program. Beijing:China Water Power Press, 2003. (in Chinese))
[7] SL386—2007, 水利水电工程边坡设计规范. 北京:中国水利水电出版社,2007. (SL386—2007, Specifications for Slope Design in Water Resources and Hydropower Engineering. Beijing:China Water Power Press,2007. (in Chinese))