土工基础

›› 2019, Vol. 33 ›› Issue (3): 264-267.

• 工程实录 • 上一篇    下一篇

新（扩）建隧道围岩稳定性监测与支护参数优化研究

丘礼球   

  1. （福建厦蓉高速公路漳龙段扩建工程有限公司，福建龙岩 364000）
  • 收稿日期:2018-09-03 修回日期:2018-09-11 出版日期:2019-06-20 发布日期:2019-08-16
  • 作者简介:丘礼球（1975-），男，高级工程师，研究方向为桥梁工程、隧道工程。

Rock Mass Stability Monitoring and Supporting Optimization of Highway Tunnel Excavation or Expansion

QIU Liqiu   

  1. (Fujian Zhanglong Section of Xiarong Expressway Widening Project Co., Ltd., Longyan 364000)
  • Received:2018-09-03 Revised:2018-09-11 Online:2019-06-20 Published:2019-08-16

摘要： 依托福建漳龙高速公路后祠隧道新（扩）建工程，开展现场围岩实时动态监控量测，研究拱顶沉降、洞周收敛的变化规律。同时，基于有限元软件ABAQUS建立三维数值仿真模型，研究隧道开挖和支护后围岩稳定性的变化规律，并针对锚杆长度、纵向间距二个支护参数进行正交实验设计，并进行支护参数优化分析研究，得出一些有益的结论。研究结果可为后续隧道扩挖和支护方案选择提供依据，也为今后类似隧道工程的建设提供参考。

关键词: 扩建隧道, 实时动态监控量测, 三维有限元, 优化分析

Abstract: The real time monitoring program on the rock mass was implemented in the Houci Tunnel excavation of Zhanglong Expressway in Fujian Province. The objective of the instrumentation program was to monitor the deformations at crest and walls at both sides of the excavated tunnel. The threedimensional finite element analysis model was established to simulate the rock mass deformations before and after tunnel excavation. Further, both the length and the spacing of the ground anchor were optimized from the numerical analysis and the results can be applied for the support of the tunnel excavations.

Key words: Tunnel Expansions, Real Time Monitoring, ThreeDimensional Finite Element Method, Optimization Analysis