THE HYDROGEOLOGY AND ENVIRONMENTAL EFFECTS OF THE EXCAVATION OF THE EXTRA-LONG TUNNEL OF THE SHI-TAI PASSENGER DEDICATED RAILWAY
石太客运专线特长隧道地区水文地质研究 及隧道开挖环境影响效应*

Based on the available geological and hydrogeological data,combined with the hydrogeological investigation in large area,we summarized the hydrogeological condition in the extra-long tunnel areas of the Shi-Tai Passenger Dedicated Railway,the Taihangshan tunnel area and the Nanliang tunnel area.The tunnel areas are divided into three groundwater systems,the Niangziguan Spring groundwater system,the Weizhou Spring groundwater system,and the San Spring groundwater system.The Taihangshan tunnel area is divided into five hydrogeological units,and Nanliang tunnel area two.In addition,the effects on environment of underground water and surface water imposed by tunnel excavation have been discussed.We believe that it will affect mainly the water level and quantity in areas where faults or rock veins intersect the tunnels.Those division would provide data for resolving such questions as water gushing and water bursting during tunnel construction.