ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2016, Vol. 36 ›› Issue (11): 1302-1309.DOI: 10.3973/j.issn.1672-741X.2016.11.003
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XIAN Guo
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Abstract:
Comparison between bench method and fullface method (including invert arch) for soft rock section of Ping’an Tunnel on ChengduLanzhou Railway is made in terms of surrounding rock deformation, primary support stress and construction organization by using numerical simulation, theoretical calculation and site test. The study results show that: 1) The stability of surrounding rock of tunnel constructed by bench method is superior to that constructed by fullface method; and the accumulated deformation of tunnel constructed by fullface method is smaller than that constructed by bench method. 2) The sizes of shear zone and tensile failure zone of tunnel constructed by 2 methods are almost the same. The construction quality of tunnel constructed by fullface method is easier to control. 3) The fullface method is superior to bench method in terms of labor and construction schedule.
Key words: soft rock tunnel, phyllite, bench method, fullface method (including invert arch), construction organization
CLC Number:
U 45
XIAN Guo. Comparison between Bench Method and Fullface Method for Ping’an Soft Rock Tunnel on ChengduLanzhou Railway[J]. Tunnel Construction, 2016, 36(11): 1302-1309.
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http://www.suidaojs.com/EN/Y2016/V36/I11/1302