滤芯渗井在不同下垫面的渗水性能研究

基于海绵城市建设理念，利用自行设计的降雨模拟装置，研究滤芯渗井在不同下垫面条件下对径流削减的效果，同时通过布置水位观测井来评价滤芯渗井的渗水性能。试验结果表明：布置滤芯渗井能够有效增加土体渗水性能，减少地表积水量；同一深度位置处，土体体积含水率随着监测点水平布置间距的增大而减小；同一水平位置处，土体体积含水率随着监测点埋置深度的加深而减小。研究结论在一定程度上验证了滤芯渗井能够提高场地土体的入渗效率，削减地表径流，可为滤芯渗井在海绵城市建设、老旧小区改造中提供理论依据和技术支持。

Seepage performance of filter element seepage well under different underlying surfaces

Based on the concept of sponge city construction, the effects of filter element seepage wells on the runoff reduction were studied under different underlying surfaces using a self-designed rainfall simulator, and monitoring wells were arranged to record the water level changes for the evaluation of the seepage performance of the filter element seepage well. The experimental results showed that the arrangement of the filter element seepage wells can effectively increase soil permeability and reduce the accumulation of surface runoff. When the soil depth is constant, the volumetric moisture content of soil decreases with the increase of horizontal spacing; when the horizontal spacing is constant, the volumetric moisture content of soil decreases with the increase of the soil depth. To some extent, the conclusion verifies that the filter element seepage well can improve the soil infiltration efficiency and reduce surface runoff. This approach can provide a theoretical basis and technical support for the construction of sponge city and the reconstruction of old residential areas.