JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2015, Vol. 45 ›› Issue (5): 70-76.doi: 10.6040/j.issn.1672-3961.0.2014.369

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Study on approaching excavation influence between expanding projects of expressway and high speed railway tunnel under operation state

SUN Keguo1,2, QIU Wenge1,2, WANG Zhongping3, GAO Xiaoyan3, GONG Lun1,2, KONG Chao1,2   

  1. 1. Key Laboratory of the Ministry of Education of Transportation Tunnel Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China;
    2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China;
    3. Henan Hongyangy Expressway Company Limited, Sanmenxia 472000, Henan, China
  • Received:2014-12-16 Revised:2015-06-16 Online:2018-10-20 Published:2014-12-16

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Abstract: Relying on the expanding project of Lianhuo expressway Luosan segment crossing over the Wenxiang tunnel and utilizing the beam-slab protection scheme, the strength reduction method considering the reduction of both rock and liner was utilized to analyze the safety of maximum excavation and overload operation. The results showed that the maximum excavation was the most dangerous state and this scheme could guarantee the safety of both projects. This conclusion was dependable for constructing this adjacent project. With the help of quality testing for liner and the wireless monitoring method, this project was successfully constructed, which proved the result's reliability and could also provide technical reference for tunnel design and construction of similar adjacent projects.

Key words: expanding project of expressway, strength reduction method, approaching excavation, high speed railway tunnel, beam-slab protective structure

CLC Number: 

  • O319.56
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