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隧道建设(中英文) ›› 2014, Vol. 34 ›› Issue (增刊): 141-144.DOI: 10.3973/j.issn.1672-741X.2014.S.023

• 研究与探索 • 上一篇    下一篇

钻炸损伤对隧道开挖塑性区之发展影响探讨

张伟哲, 陈志南   

  1. (台湾科技大学营建工程系, 台北 10607)
  • 收稿日期:2014-06-13 出版日期:2014-08-15 发布日期:2014-08-11
  • 作者简介:张伟哲(1988—),台湾云林人,2010年毕业于台湾科技大学,隧道专业,硕士,现攻读隧道及地下结构工程方面数值仿真分析。

Development of Plasticized Zone in Tunneling due to Blasting Damage

Weiche CHANG, Cheenan CHEN   

  1. (Department of Construction Engineering , NTUST , Taipei 10607)
  • Received:2014-06-13 Online:2014-08-15 Published:2014-08-11

摘要:

针对钻炸隧道周围损伤区域之工程特性进行探讨,利用三维数值分析软件FLAC 3D进行模式建置与数值模拟。首先就隧道假设没有损伤之情况模拟轮进开挖,针对三维应力再分配及塑性区发展等进行探讨;接着模拟隧道钻炸开挖产生损伤情况,再将此2种情况进行分析对比,最后归纳汇整出钻炸损伤对隧道应力变形、塑性区之发展影响。

关键词: 钻炸损伤, 三维应力再分配, 隧道塑性区

Abstract:

This research focuses on the engineering characterization of plasticized zone in tunneling due to blasting damage. Simulation model is established and numerical simulation is made by means of threedimensional numerical software FLAC 3D. Firstly, the threedimensional stress redistribution and plasticized zone development are analyzed, assuming no blasting damage; Then, blasting damage is introduced; Finally, comparison and contrast is made between the simulation result of stress redistribution and plasticized zone development under nondamage condition and that under damage condition, and the influence of the blasting damage on the stress redistribution and plasticized zone development is summarized.

Key words: blasting damage, threedimensional stress redistribution, plasticized zone in tunneling

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