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隧道建设(中英文) ›› 2015, Vol. 35 ›› Issue (2): 149-159.DOI: 10.3973/j.issn.1672-741X.2015.02.009

• 施工技术 • 上一篇    下一篇

对隧道TBM导洞扩挖法施工的探讨与展望

王立川1,2, 陈海勇3, 王占军4, 徐润泽5, 潘建平6, 陈宏宇7   

  1. (1.成都铁路局, 四川 成都 610082; 2.中南大学土木工程学院, 湖南 长沙 410075; 3.北京中铁隧建筑有限公司, 北京 100022; 4.中信重工洛阳矿山机械工程设计研究院, 河南 洛阳 471039; 5.中铁建大桥工程局集团第二工程有限公司, 广东 深圳 518083; 6.中铁十八局集团有限公司三南项目部, 重庆 400800; 7.中铁隧道集团一处有限公司, 重庆 401121)
  • 收稿日期:2014-11-07 修回日期:2014-12-18 出版日期:2015-02-20 发布日期:2015-02-11
  • 作者简介:王立川(1965—),河南孟州人,2011年毕业于中南大学,桥梁与隧道工程专业,博士,教授级高级工程师,现任成都铁路局副总工程师。长期从事铁路、轨道交通、公路、水利等行业的隧道与地下工程施工、病害(缺陷)整治、地质灾害防治、施工管理、建设管理、设计和施工咨询工作,致力于浅埋、偏压、大跨、强透水地层、淤泥质软土等地下工程结构和施工技术研究。
  • 基金资助:

    国家科技支撑项目(2012BAG05B03)

Discussion and Prospects on TBM Pilotheading and Enlarging Method

WANG Lichuan1,2, CHEN Haiyong3, WANG Zhanjun4, XU Runze5, PAN Jianping6, CHEN Hongyu7   

  1. (1. Chengdu Railway Bureau, Chengdu 610082, Sichuan, China; 2. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China; 3. Beijing Construction Co., Ltd. of China Railway Tunnel Group, Beijing 100022, China; 4. Luoyang Mining Machinery Engineering Design Institute, CITIC Co., Ltd., Luoyang 471039, Henan, China; 5. The 2nd Engineering Co., Ltd. of China Railway Construction Bridge Engineering Bureau Group, Shenzhen 518083, Guangdong, China; 6. Sannan Department of China Railway 18th Bureau Group Co., Ltd., Chongqing 400800, China; 7. The First Engineering Co., Ltd. of China Railway Tunnel Group, Chongqing, 401121, China)
  • Received:2014-11-07 Revised:2014-12-18 Online:2015-02-20 Published:2015-02-11

摘要:

介绍导洞法的概念及其作用,分析导洞法的特点及其适用条件。以2座已建成运营的单洞双线铁路隧道和1座施工图设计阶段的双洞6车道高速公路隧道共3座地质差异较大的特长隧道为依托,主要进行以工期关键工序——挖掘和初期支护为研究对象的工期方案模拟,并比对模拟方案工期与实际或施工图设计工期。认为: 1)软弱破碎围岩比例高的单洞隧道应慎重采取TBM导洞法。2)仅用1台TBM单向导洞法取代工期性辅助导坑对单洞特长隧道而言是不可行的;在单洞特长隧道建设中,2台TBM相向实施TBM导洞法是可行的,但须具备设置辅助导坑的条件,辅助导坑宜按无轨双车道断面设置。3)在双洞特长隧道建设中,双洞各用1台TBM相向平行导洞法则有望取代工期性辅助导坑;双洞特长隧道实施TBM导洞法,在工期、成本(投资)、不良地质应对方面有明显优势。4)川渝地区广泛分布的泥岩、砂岩、砂质泥岩、泥质砂岩及其互层地层具有实施TBM导洞法的天然地质优势。最后对TBM导洞法的应用前景进行了展望。

关键词: 隧道, TBM导洞扩挖法, 钻爆法

Abstract:

In this paper, the concept and effect of pilotheading method are presented, and the characteristics and applicable conditions of pilotheading method are analyzed. The construction schedules of 3 tunnels located in different geological conditions are simulated in terms of excavation and primary support, and comparison and contrast is made between simulated construction schedules and actual/designed construction schedules. Conclusions drawn are as follows: 1) TBM pilotheading method is not suitable for singletube tunnels located in soft, weak and fractured strata; 2) Instead of other construction galleries, TBM pilotheading method may be adopted for singletube tunnels. 3) Twin TBM pilotheading method is suitable for twintube extralong tunnels, which has advantages in terms of construction schedule, cost and coping with unfavorable geological conditions; 4) TBM pilotheading method is suitable for the construction of tunnels in Sichuan and Chongqing area. Finally, the application of TBM pilotheading method is prospected.

Key words: tunnel, TBM pilotheading, enlarging method, drilling and blasting method

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