地下富水城市的地铁车站 对地下水渗流影响探讨

随着大量富水地区地下工程的建设，地下工程对地下水渗流条件的改变导致的环境问题不断凸显。根据 一维渗流理论，对未建地铁车站时的地下水渗流情况进行分析，并结合镜像原理及叠加原理，分析地铁车站对地 下水渗流的影响机制，得到受地铁车站阻隔作用的地下水壅高值及地下水流量的解析式。运用所得到的理论公式， 分析济南某地铁车站因受车站阻隔作用引起的地下水位壅高、地下水流量变化等，并提出考虑地下水壅高的抗浮 设防水位建议值。研究表明，车站处因受到阻隔作用而产生的地下水壅高值与含水层影响半径、水力坡度等有 关。在实际工作中，当遇到具有一定的水力坡度的强透水含水层时，地铁车站建成后可能产生的地下水壅高应当 引起工程人员的重视。

Influence of Subway Station on Groundwater Seepage in Underground Water Rich Cities

With the construction of a large number of underground projects in water-rich areas, environmental problems associated with changes in groundwater seepage conditions caused by underground engineering are becoming increasingly prominent. In this study, the groundwater seepage when the subway station was not built was analyzed based on the one-dimensional seepage theory. Combined with the mirror image principle and superposition principle, the influence mechanism of the subway station on groundwater seepage was also analyzed, and the analytical formula of backwater height and groundwater flow due to the barrier effect of the subway station was obtained. Using the theoretical formula obtained in this study, the backwater height and groundwater flow of a subway station in Jinan, caused by the blocking effect of the station, was analyzed, and the recommended value of the anti-floating water level considering the backwater was proposed.