高地应力条件下深埋隧道开挖方式数值优选及工程应用

杨彦亮; 李锡波; 毛洪录

doi:10.3973/j.issn.1672-741X.2013.09.006

隧道建设 >

2013 , Vol. 33 >Issue 9: 735 - 740

DOI: https://doi.org/10.3973/j.issn.1672-741X.2013.09.006

研究与探索

高地应力条件下深埋隧道开挖方式数值优选及工程应用

杨彦亮 ,
李锡波 ,
毛洪录

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（1. 聊城市公路工程总公司第三工程处，山东聊城 252000； 2. 山东省交通规划设计院，山东济南 250031； 3. 山东大学土建与水利学院，山东济南 250061）

杨彦亮（1974—），男，山东临清人，2010年毕业于山东省交通学院土木工程专业，本科，工程师，现从事施工技术管理工作。

收稿日期: 2013-04-26

修回日期: 2013-06-09

网络出版日期: 2013-09-18

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Numerical Optimization on the Selection of Excavation Methods for Deep Tunnels in High Stress Field and its Engineering Application

YANG Yanliang ,
LI Xibo ,
MAO Honglu

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(1. The 3rd Engineering Department of General Highway Engineering Company of Liaocheng, Liaocheng 252000,  Shandong, China; 2. Shandong Provincial Communications Planning and Design Institute, Jinan 250031,  Shandong, China; 3. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China)

Received date: 2013-04-26

Revised date: 2013-06-09

Online published: 2013-09-18

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摘要

针对高地应力条件下隧道全断面施工过程中出现的挤压掉块、支护结构扭曲破坏等现象，拟采取上下台阶法或下导洞超前开挖法进行施工，现利用有限差分软件FLAC3D模拟分析了全断面法、下导洞超前开挖法、上下台阶法3种开挖方案，对比分析位移场、塑性区和应力场的分布特征，结果表明：综合考虑位移场、塑性区及应力场分布等关键特征，推荐采用上下台阶法进行现场施工，采用该方法施工后开挖面稳定性得到明显改善，且现场监测数据与数值计算结果较为吻合。

关键词： 深埋隧道; 高地应力; 隧道开挖; 数值模拟

本文引用格式

杨彦亮 , 李锡波 , 毛洪录 . 高地应力条件下深埋隧道开挖方式数值优选及工程应用[J]. 隧道建设, 2013 , 33(9) : 735 -740 . DOI: 10.3973/j.issn.1672-741X.2013.09.006

Abstract

To avoid rock falls and distortion of support structure occurring in the construction of tunnels in high stress field, the designers had plans to use either stage excavation or pilot heading excavation method for the tunnel. Full face excavation method, pilot heading excavation method and stage excavation method were simulated by the finite difference software FLAC3D. After analyzing and comparing the features of the distribution of the deformation field, plasticized deformation field and stress field, the stage excavation method was proposed for the tunnel based on the data produced. After adopting the said method, the stability of the excavation face was improved dramatically and the data collected at the site coincide well with the numerical simulation results.

Key words： deep tunnel; high stress field; tunnel excavation method; numerical simulation

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