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| Analysis of Regional Spring Basin Characteristics and Hydrological Conditions of Soutliern Taihang Tunnel |
| YAN Chang - he，SUN Guang - ji，WANG Yan - tao, YUAN Xiao - bo |
| (China Railway Engineering Consulting Group Co. Ltd，Beijing 100055，China) |
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Abstract Abstract ： Research purposes ： Taiyuan to Jiaozuo intercity railway crosses the region of Shanxi and Henan Province by southern Taihang tunnel， in which Ordovician and Cambrian carbonate rock form and develop， karst groundwater conditions are complex. To study hydrogeological characteristics of southern Tailiang tunnel and accurately predict the hydrological conditions of tunnel construction，this paper analyzed the geomorjDhic features，tectonic contact，lithologic characteristics，spring water level and recharge， runoff and discharge conditions of Sangu spring basin，Yanhe spring basin and other scattered springs basins. Research conclusions:(1) The hydrological conditions of Sangu spring basin，Yanhe spring basin and otiier scattered springs basins are similar to geomorphic features and lithologic conditions of southern Taihang tunnel，the spring basin hydrology has influence on the tunnel construction. (2) The tunnel construction is not affected by surface runoff，but groundwater storage is much larger， and tunnel construction will cut off the groundwater seepage channel， leading to larger water inflow， so need to take the measures of combination of water plugging and drainage to avoid causing hydrological environment problems. ( 3 ) The research results have has certain reference value for tunnel construction and regional hydrology research.
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Received: 07 September 2016
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2017, Vol. 34 
