长江科学院院报 ›› 2012, Vol. 29 ›› Issue (5): 40-44.

• 岩土工程 • 上一篇    下一篇

深埋隧洞开挖岩爆数值模拟与预测

陈文亮1,章 青2,刘仲秋3    

  1. 1. 浙江省水利河口研究院,杭州 310020; 2.河海大学 工程力学系,南京 210098; 3.山东农业大学,山东 泰安 271000
  • 收稿日期:2011-04-25 出版日期:2012-05-01 发布日期:2012-06-21
  • 作者简介:陈文亮(1982-),男,浙江温州人,硕士,主要从事水利工程质量检测及防灾减灾工作
  • 基金资助:

    国家自然科学基金(50539090)

Numerical Simulation and Prediction of Rockburst in Deep Tunnel Excavation

CHEN Wen-liang1, ZHANG Qing2, LIU Zhong-qiu3   

  1. 1. Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China; 2. Department of Engineering Mechanics, Hohai University, Nanjing 210098, China; 3. Shandong Agricultural University, Taian 271000, China)
  • Received:2011-04-25 Online:2012-05-01 Published:2012-06-21

摘要: 为能更好地反映深埋隧洞岩爆的脆性破坏特征,在岩爆的数值模拟中采用了一个复合破坏准则弹脆塑性本构模型,并结合锦屏二级水电站辅助洞工程,综合运用各种判据和方法建立岩爆的预测体系,对开挖过程中岩爆的发生情况进行了预测,判定在洞肩和洞底角点处发生岩爆可能性较大,这与锦屏二级水电站辅助洞岩爆实际发生情况基本一致。对岩爆的预测具有一定的参考价值。

关键词: 深埋隧洞, 脆性岩体, 岩爆, 数值模拟, 预测

Abstract: In order to better reflect the characteristics of brittle failure of rockburst in deep tunnel, an elasto-brittle-plastic constitutive model based on combined failure criterion for brittle rock was employed in the numerical simulation of rockburst. A rockburst prediction system based on various criteria and methods was established to predict the rockburst during the excavation of the auxiliary tunnel of Jinping-II hydropower station. The analysis showed that rockburst was more possible to happen at the shoulder and bottom corner points of the tunnel, which was consistent with the in-situ actual observations.

Key words: deep tunnel, brittle rock, rockburst, numerical simulation, prediction

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