Seepage well is an emerging Low Impact Development (LID) technology that can effectively control the storm runoff. However, its rainwater infiltration rate and storage capacity still require further enhancement. By setting a horizontal infiltration structure at the bottom of conventional rainwater seepage well (CSW), an enhanced seepage well (ESW) was proposed in this study, and its infiltration performances compared with the permeable pavement (PP) and the CSW were systemically investigated using static infiltration experiment and HYDRUS-2D simulation. The results showed that the infiltration efficiency of ESW was significantly higher than that of PP and CSW, and the process of water infiltrated through soil mainly controlled the macroscopic infiltration rate. The Nash-Sutcliff Efficient (NSE) index was used to evaluate the accuracy and reliability of the HYDRUS-2D model, and the results of NSE values greater than 0.75 (varied between 0.75 and 0.91) confirmed the applicability of HYDRUS-2D to describe correctly the hydraulic behavior of the ESW system. Simulation infiltration tests showed that the ESW performed a higher average infiltration rate and fewer total runoff volume than the CSW, indicating the effectively enhancement of the infiltration and water retention capacity of ESW, especially under heavy rainfall intensities. Additionally, the ESW system exhibited an excellent runoff-control and rainwater retention capacity in an actual rainfall scenario.

渗流井是一种新兴的低影响开发（LID）技术，可以有效控制暴雨径流。但其雨水入渗率和蓄水能力仍需进一步提高。本研究通过在常规雨水渗水井（CSW）底部设置水平入渗结构，提出了增强型渗水井（ESW），并系统研究了其与透水路面（PP）和CSW的入渗性能比较。静态渗透实验和 HYDRUS-2D 模拟。结果表明，ESW的入渗效率显着高于PP和CSW，且水渗入土壤的过程主要控制宏观入渗速率。Nash-Sutcliff Efficient (NSE) 指数用于评估 HYDRUS-2D 模型的准确性和可靠性，NSE 值大于 0.75（在 0.75 和 0.91 之间变化）的结果证实了 HYDRUS-2D 正确描述的适用性ESW 系统的液压行为。模拟入渗试验表明，ESW 比 CSW 具有更高的平均入渗速率和更少的总径流量，表明 ESW 的入渗和保水能力得到有效增强，尤其是在强降雨强度下。此外，ESW 系统在实际降雨情况下表现出出色的径流控制和雨水保留能力。91) 证实了 HYDRUS-2D 可以正确描述 ESW 系统的液压行为。模拟入渗试验表明，ESW 比 CSW 具有更高的平均入渗速率和更少的总径流量，表明 ESW 的入渗和保水能力得到有效增强，尤其是在强降雨强度下。此外，ESW 系统在实际降雨情况下表现出出色的径流控制和雨水保留能力。91) 证实了 HYDRUS-2D 可以正确描述 ESW 系统的液压行为。模拟入渗试验表明，ESW 比 CSW 具有更高的平均入渗速率和更少的总径流量，表明 ESW 的入渗和保水能力得到有效增强，尤其是在强降雨强度下。此外，ESW 系统在实际降雨情况下表现出出色的径流控制和雨水保留能力。