深埋隧洞开挖岩爆数值模拟与预测

陈文亮, 章 青, 刘仲秋

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

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

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 
作者信息 +

Numerical Simulation and Prediction of Rockburst in Deep Tunnel Excavation

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

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.

关键词

深埋隧洞 / 脆性岩体 / 岩爆 / 数值模拟 / 预测

Key words

deep tunnel / brittle rock / rockburst / numerical simulation / prediction

引用本文

导出引用
陈文亮, 章 青, 刘仲秋. 深埋隧洞开挖岩爆数值模拟与预测[J]. 长江科学院院报. 2012, 29(5): 40-44
CHEN Wen-Liang, ZHANG Qing, LIU Zhong-Qiu-. Numerical Simulation and Prediction of Rockburst in Deep Tunnel Excavation[J]. Journal of Changjiang River Scientific Research Institute. 2012, 29(5): 40-44
中图分类号: TU457   

基金

国家自然科学基金(50539090)


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