Analysis on the hydrogeological influence of the Huangniya tunnel in Nanchuan district of Chongqing
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摘要: 隧道工程建设无疑对岩溶地区的水文地质环境地质带来巨大冲击.文章以重庆市南川区黄泥垭隧道工程为实例,采用地面调查、示踪试验、长观监测等方法进行综合研究,剖析隧道工程对隧址区水文地质环境的影响.研究结果表明:黄泥垭隧道工程改变了隧址区的地下水流场,疏干地表地下水、加剧干旱缺水程度,并随之出现新的人工水点——隧道涌水;同时隧道工程影响了水资源空间分配格局、降低了水资源利用率.Abstract: It is certain that tunnel construction can bring great impacts on the hydrogeological environment in karst areas.Taking the Huangniya tunnel project in Nanchuan district of Chongqing as an example,this pa-per uses ground investigation,tracer tests,long-sight monitoring and numerical simulation to analyze the in-fluence of tunnel engineering on the hydrogeological environment.The results show that the Huangniya tun-nel project has changed the groundwater flow field in the tunnel area,drained the groundwater,exacerbated drought and water shortage,and led to a new artificial water point-tunnel of gushing water.At the same time,the tunnel project destroyed the water resource allocation pattern and reduced the utilization rate of wa-ter resources.
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Key words:
- Huangniya tunnel /
- hydrogeology /
- groundwater flow field /
- tunnel gushing water
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