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山东大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (1): 59-67.doi: 10.6040/j.issn.1672-3961.0.2016.232

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超大断面隧道软弱围岩控制机制及应用

万利1,王春河2,王琦3*,李术才3,邵行1,江贝3,4,孙会彬3,秦乾3   

  1. 1. 山东省交通规划设计院, 山东 济南 250031;2. 中建山东投资有限公司, 山东 济南 250101;3. 山东大学岩土与结构工程研究中心, 山东 济南 250061;4. 济南大学土木建筑学院, 山东 济南 250022
  • 收稿日期:2016-06-27 出版日期:2017-02-20 发布日期:2016-06-27
  • 通讯作者: 王琦(1983— ),男,山东临沂人,讲师,博士后,主要研究方向为地下工程支护及模型试验. E-mail: wangqi@sdu.edu.cn E-mail:foxwl0901@126.com
  • 作者简介:万利(1980— ),男,山东即墨人,高级工程师,硕士,主要研究方向为隧道设计及施工. E-mail: foxwl0901@126.com
  • 基金资助:
    国家自然科学基金面上基金资助项目(51674154);国家自然科学基金青年科学基金资助项目(51304125);中国博士后科学基金面上一等资助项目(2016M590150);中建股份科技研发资助项目(CSCEC-2016-Z-23)

The control mechanism for super section tunnel on weak surrounding rock and its application

WAN Li1, WANG Chunhe2, WANG Qi3*, LI Shucai3, SHAO Xing1, JIANG Bei3,4, SUN Huibin3, QIN Qian3   

  1. 1.Shandong Provincial Communications Planning and Design Institute, Jinan 250031, Shandong, China;
    2. China State Construction Shandong Investment Company Limited, Jinan 250101, Shandong, China;
    3. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China;
    4. School of Civil Engineering and Architecture, Jinan University, Jinan 250022, Shandong, China
  • Received:2016-06-27 Online:2017-02-20 Published:2016-06-27

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摘要： 为明确超大断面隧道软弱围岩破坏及控制机制,系统开展交叉中隔墙(center cross diagram, CRD)法和双侧壁导洞开挖方法下超大断面隧道软弱围岩控制机制数值试验,对比分析不同强度等级围岩、不同开挖方法在无支护、锚杆支护、H型钢拱架支护和H型钢拱架+锚杆支护四种支护方式下隧道围岩变形、支护构件受力变化规律,并研究超大断面隧道软弱围岩控制机制。同时对H型钢+锚网喷联合支护方式在超大断面破碎围岩隧道进行了CRD和双侧壁导洞两种开挖方法下的现场试验,拱顶沉降分别稳定在27.2 mm和18.7 mm,很好地控制了围岩变形、保证了现场初期支护安全。

关键词: 软弱围岩, 数值试验, 控制机制, 现场试验, 超大断面, 隧道

Abstract: For making clear the failure control mechanism of super section tunnel, numerical experiments of weak rock control mechanism applied to super section tunnel were systematically carried out by the excavation methods that included CRD and double side wall drift methods. The change laws of tunnel surrounding rock deformation and supporting components force were compared and analyzed under four types of supporting schemes and different excavation methods, which included excavation without support, bolt support, H-beam arch support and H-beam-bolt support. The control mechanism of super section tunnel with weak surrounding rock was acquired. Field experiments of H type steel and anchor net shot rete combined support section tunnel were carried out by the excavation methods that including CRD and double side wall drift methods, and the vault settlement were 27.2 mm and 18.7 mm. The results showed that this support system had great effect on the stability control of surrounding rock and could ensure the safety of the site.

Key words: weak surrounding rock, numerical experiment, control mechanism, super large section, tunnel, field tests

中图分类号: 

  • TU45
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