摘要
以贵黄延伸线永乐隧道穿越鱼洞峡水库及汪家大井水源保护区为例,分析新建隧道对水源保护区的影响。结果表明,永乐隧道位于汪家大井补给范围北侧边缘,其汇水面积小,不是汪家大井主要补给区,隧道建设对汪家大井水源地影响极小;拟建隧道设计标高高于汪家大井和鱼洞峡水库蓄水高程,隧道建设对两个水源保护区均无袭夺作用,对鱼洞峡水库的影响也极小。但存在施工中污水沿岩溶通道下渗污染地下水的风险,设计和施工应采用相应的措施避免污染事件的发生。
Taking the Yongle tunnel of the Guihuang extension line crossing the Yudongxia reservoir and the Wangjia Dajing water source protection zone as an example,the impact of the newly-constructed tunnel on the water source protection zone is analyzed.The results show that,the Yongle tunnel is located on the northern edge of the supply area of Wangjia Dajing,with a small catchment area,not the main supply area of Wangjia Dajing.The tunnel construction has minimal impact on the water source area of Wangjia Dajing;the design elevation of the proposed tunnel is higher than the water storage elevation of Wangjia Dajing and Yudongxia reservoir.The tunnel construction has no impact on the two water source protection zones and has minimal impact on the Yudongxia reservoir.However,there is a risk of groundwater pollution caused by sewage infiltration along karst channels during construction.The corresponding measures should be taken in the design and construction to avoid pollution incidents.
作者
唐家辉
刘黔
Tang Jiahui;Liu Qian(Guizhou Transportation Planning Survey&Design Academe Co.,Ltd.,Guiyang 550081,China)
出处
《北方交通》
2023年第11期77-80,共4页
Northern Communications
关键词
新建隧道
水源保护区
水文地质
地下水污染
Newly-constructed tunnel
Water source protection zone
Hydrogeology
Groundwater pollution
