关键词: 滤芯渗井;透水砖;径流调控;SWMM模型;海绵城市;

Abstract: Aiming at the current urban waterlogging problem，a filter element seepage well and permeable brick device was proposed based on the concept of sponge city construction.The device is formed by digging a seepage well hole of a certain depth in the deployed area，putting a filter element into the hole and laying permeable brick above it.Based on the reconstruction project of Wuqing industrial park in Tianjin City，the change of groundwater level with or without filter element seepage well and permeable brick was monitored by arranging observation water level holes，meantime，the SWMM model was used to analyze the influence of filter element seepage well and permeable brick on runoff regulation under the action of 3 different layout areas and 5 different rainfall return periods.The results show that the device can effectively improve the soil permeability and the runoff reduction effect in the deployed area.In the same rainfall return period，with the increase of the deployed area，the reduction ability of runoff is greatly improved.Under the same deployed area，if the rainfall recurrence period is less than 30-year，the reduction rate of runoff coefficient and reduction effect of flood peak are more significant.When the rainfall return period is 2-year and the deployed area is 30%，the reduction rate of runoff coefficient and flood peak reach 61 % and 65 % respectively.The research results can provide a reference for the further application of this device in the field of sponge city construction.

Key words: filter element seepage well；permeable brick；runoff regulation；SWMM model；sponge city