海东隧洞施工过程中地下水动态变化预测

摘要

Taking the HaiDong tunnel of He village as an example,starting from the geology of the tunnel area,based on the macroscopic grasp of regularities of groundwater recharge,runoff and discharge,the article is to predict the groundwater dynamic of the tunnel area by using the Visual MODFLOW three - dimensional numerical simulation software. The results show:with the advancement of the tunnel construction,the natural seepage fields of the tunnel area are gradually interfered. As a result,the water level is gradually reducing,which forms a drawdown funnel. As the funnel expands,some regions will have the groundwater drainage,At the same time,there will be some environment impacts on surrounding groundwater,which affects the production and living water of local residents.%以海东隧洞！村段为例，从隧址区地质概况入手，在地下水补给、径流和排泄规律宏观掌握的基础上，运用Visual MODFLOW地下水三维数值模拟软件对隧址区地下水动态变化进行预测分析。结果表明：随着隧洞施工的推进，隧址区天然渗流场逐渐受到干扰，水位逐渐降低，形成地下水降落漏斗，漏斗范围不断扩大，影响范围达7.52 m。部分区域会发生地下水疏干现象，从而对周边地下水环境造成影响，影响到当地居民的生产生活用水。