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MODERN TUNNELLING TECHNOLOGY 2022, Vol. 59 Issue (4) :7-17    DOI:
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Reflection on Several Issues in Scientific Research on Loess Tunnelling
 
(1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070; 2. JSTI Group Co., Ltd., Nanjing 210017)
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Abstract Based on relevant research results from investigation of existing loess tunnel works, the author has com? pared the advantages, disadvantages and applicability of various research methods, summarized some complex issues in loess tunneling and underground engineering and put forward relevant counter solutions, mainly including surrounding rock classification method reflecting mechanical principle of dynamic construction under complex geological conditions, spatial-temporal evolution law and calculation method of surrounding rock pressure at tunnel portal, influence of water softening mechanism of loess on stability and durability of tunnel structure, deformation law and structural optimization of surrounding rock when the tunnel passes through the loess-bedrock binary stratum, optimal design of waterproof and drainage system of loess tunnel, reinforcement and protection technology of side and front slopes in bridge-tunnel connection project, ecological restoration and other engineering scientific problems.
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LIANG Qingguo1 CHEN Kelin1 WANG Shang1 SHI Baodong1 ZHANG Tangjie2
Keywords： Loess tunnel   Classification of surrounding rock   Pressure of surrounding rock   Stability   Waterproof and drainage   Bridge-tunnel connection     
Abstract： Based on relevant research results from investigation of existing loess tunnel works, the author has com? pared the advantages, disadvantages and applicability of various research methods, summarized some complex issues in loess tunneling and underground engineering and put forward relevant counter solutions, mainly including surrounding rock classification method reflecting mechanical principle of dynamic construction under complex geological conditions, spatial-temporal evolution law and calculation method of surrounding rock pressure at tunnel portal, influence of water softening mechanism of loess on stability and durability of tunnel structure, deformation law and structural optimization of surrounding rock when the tunnel passes through the loess-bedrock binary stratum, optimal design of waterproof and drainage system of loess tunnel, reinforcement and protection technology of side and front slopes in bridge-tunnel connection project, ecological restoration and other engineering scientific problems.
Keywords： Loess tunnel,   Classification of surrounding rock,   Pressure of surrounding rock,   Stability,   Waterproof and drainage,   Bridge-tunnel connection     
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LIANG Qingguo1 CHEN Kelin1 WANG Shang1 SHI Baodong1 ZHANG Tangjie2 .Reflection on Several Issues in Scientific Research on Loess Tunnelling[J]  MODERN TUNNELLING TECHNOLOGY, 2022,V59(4): 7-17
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