MODFLOW를 이용한 도심지역 대형 건축물 신축에 따른 지하수 흐름 및 지하수위 변화예측에 관한 연구

Abstract

In this study, the influence of the construction of a large sized building on the flow and levelof groundwater in a metropolitan area was investigated with simulation model MODFLOW fora selected area located in Gangseo-gu, Seoul, where a large business center was scheduled to bebuilt.It was simulated that the groundwater level in the study area was suddenly lowered by theconstruction of a large building and groundwater in the surrounding area fast flowed intothe study area. And even after the construction finished, the falling down of groundwater levelconsistently continued in some degree.The flow state of groundwater appeared to be the same in both cases where a soil cementwall is applied and where it is not during the construction. But for the case of application of asoil cement wall as the amount of groundwater flowing into the study site became reduced, itwas estimated that the time for underground watershed getting far away from the site was alsoreduced and the influence of a building construction on the surrounding groundwater becamereduced.Thus, it is deemed necessary that recharging the spilled ground water and rainfall into theconstruction area to lessen the abrupt change in flow and level of ground water should beconsidered in design of construction of a large sized building in a metropolitan area.