土工基础

›› 2012, Vol. 26 ›› Issue (1): 41-44.

• 工程实录 • 上一篇    下一篇

山岭隧道穿越富水破碎带施工灾害预报及稳定性分析

张立丰1,隋 斌2   

  1. （1.中铁十四局集团有限公司，山东泰安 271000；2.山东大学岩土与结构工程研究中心，济南 250061）
  • 收稿日期:2011-12-06 出版日期:2012-02-20 发布日期:2012-03-23
  • 作者简介:张立丰，男，1972年生，工程师，1996年毕业于西安建筑科技大学管理工程系，现主要从事岩土工程施工、管理等方面的工作。

Construction Hazard Alarming and Stability Analysis of Tunnels in Groundwater Rich Fractured Zone

ZHANG Lifeng1, SUI Bin2   

  1. （1.China Railway 14th Construction Bureau Co. Ltd. Tai'an, Shandong, 271000；2.Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061)
  • Received:2011-12-06 Online:2012-02-20 Published:2012-03-23

摘要： 结合某山岭高速公路隧道，运用超前地质预报（激发极化法）、数值计算分析等手段对隧道穿越富水破碎带施工灾害预报及控制进行了分析研究。分析结果表明:激发极化法能够准确可靠地判断出富水破碎带的位置和规模，可以为施工顺利通过富水破碎带提供科学依据；通过数值模拟研究隧道富水段开挖后的渗流场、应力场及位移场分布等情况可以为合理地选择隧道开挖及支护方案提供技术支撑；通过对施工灾害的预报及控制研究，分析出隧道穿越富水断层围岩变形的一般规律，可以为今后类似工程提供有益的借鉴。

Abstract: In this case history of highway tunnel in the mountain area, the geological hazard alarming and control of tunnels in groundwater rich fractured zone are studied by using geological prediction (induced polarization) and numerical analysis methods. The results indicate that the induced polarization method can reliably locate the groundwater rich fractured zone and its horizontal and vertical limits. The predicting of the fractured zone can provide a better control of tunneling activities through the adverse geological condition. The distributions of seepage, stress and strain around the fractured zone after the tunnel excavation can be predicted by the numerical analysis. Therefore, appropriate tunnel excavation and supporting schemes can be selected based on the predicting and analysis results.

Key words: groundwater rich fractured zone, induced polarization, numerical simulation, hazard minimization