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*

文章在充分分析已有地质和水文地质资料的基础之上,综合大面积水文地质调绘和多种勘探成果,对石太客运专线太行山隧道和南梁隧道所在区域的水文地质条件进行了系统分析。将隧道区域划分为娘子关泉域系统、威州泉域系统和散泉系统三大地下水含水系统,同时将太行山隧道区划分为5个水文地质单元,将南梁隧道区划分为两个水文地质单元。另外,论述了隧道开挖对地下水和地表水环境的影响,主要表现在对断层或岩脉与隧道相交地段的水位、水量产生影响,这为进一步解决特长隧道施工过程中的突水、涌水等问题提供了可靠的基础性资料,加深了对河北、山西两省交界处水文地质条件薄弱地带的了解。

THE HYDROGEOLOGY AND ENVIRONMENTAL EFFECTS OF THE EXCAVATION OF THE EXTRA-LONG TUNNEL OF THE SHI-TAI PASSENGER DEDICATED RAILWAY

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.