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MODERN TUNNELLING TECHNOLOGY 2011, Vol. 48 Issue (6) :137-140    DOI:
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Pipe-Roof Advanced Support in Shallowand Bias Loess Tunnels
(The 2nd Engineering Company of China Railway 12th Engineering Group, Taiyuan 030032)
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Abstract A pipe-roof assisted by cement grouting is an effective way of providing advanced support for tunnel sections with special geological conditions, such as sandy soil, loess, crack development in stratum, shallow depth or bias stratum. This paper introduces the construction technology, processes and technical characteristics of the pipe-roof used in certain shallow-buried and bias loess tunnels. The reliability of the pipe-roof is ascertained based on the analysis of monitoring data. Engineering practices showed that the pipe-roof effectively reduced surface subsidence and rock deformation and guaranteed safe construction of the sections with adverse geological conditions.
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YUAN Jun-Ting
LIN Li-Fang
XI Ji-Hong
LUO Wen-Xue
Keywords： Tunnel construction   Advanced support of pipe-roof   Construction technology   Monitoring and measuring     
Abstract： A pipe-roof assisted by cement grouting is an effective way of providing advanced support for tunnel sections with special geological conditions, such as sandy soil, loess, crack development in stratum, shallow depth or bias stratum. This paper introduces the construction technology, processes and technical characteristics of the pipe-roof used in certain shallow-buried and bias loess tunnels. The reliability of the pipe-roof is ascertained based on the analysis of monitoring data. Engineering practices showed that the pipe-roof effectively reduced surface subsidence and rock deformation and guaranteed safe construction of the sections with adverse geological conditions.
Keywords： Tunnel construction,   Advanced support of pipe-roof,   Construction technology,   Monitoring and measuring     
published: 2011-09-08
Cite this article:   
YUAN Jun-Ting, LIN Li-Fang, XI Ji-Hong etc .Pipe-Roof Advanced Support in Shallowand Bias Loess Tunnels[J]  MODERN TUNNELLING TECHNOLOGY, 2011,V48(6): 137-140
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2011/V48/I6/137
　
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