上海地下水流场变化及其对地面沉降发展的影响

Change of Groundwater Seepage Field and Its Influence to Development of Land Subsidence of Shanghai

地下水开采导致的水位下降是含水层系统流场变化的关键,也是地面沉降形成与发展的重要因素。上海目前深部含水层开采日趋集中水位持续降低,浅部含水层大规模工程降水以及邻省地下水开采等,使地下水渗流场出现新的变化,并对地面沉降控制造成不利影响。切实加强地下水管理,严格控制地下水位,是深化地面沉降有效防治的重要环节。

The groundwater exploitation and level decline are the key factors for change of seepage field in aquifer system. And it influences to the development of land subsidence. At present, the groundwater exploitation has shown the new changes, which are caused by groundwater table in the deep aquifer continually dropping, and engineering pumped in shallow aquifer and effect of exploitation in neighboring provinces. So seepage field has notable change and influence to control of land subsidence. To strengthen more the systematic management of groundwater and control the groundwater table are the important links to protect the land subsidence.