Hydrological impact assessment on permeable road pavement with subsurface precast micro‐detention pond

Abstract

The purpose of this paper is to study stormwater management potential of new permeable pavement with subsurface micro‐detention storage (PPDS) at low‐speed residential suburban area. The main features incorporated permeable pavement of a hollow micro cylinder precast structure with solid hexagon precast concrete as top and bottom covers. The purpose of hollow micro detention design is for rainwater holding and void between the sets is for self‐drying through the side and bottom seepage during rain. The hydrological parameters were obtained from laboratory rainfall simulator experiment. The performance was evaluated via simulation with Storm Water Management Model (SWMM). The outcomes from the physical model matched well with SWMM. A case study was then developed to assess the hydrological impact of PPDS with the existing condition and other types of permeable pavements. Significant variance was observed, where PPDS displayed its best hydrological performances for stormwater management with the presence of subsurface detention storage.

Case Study of Stormwater Control by Permeable Road in Commercial Centre under Equatorial Climate

“…The storage facility had a solid-framed structure but hollow within, thus having a porosity as high as 0.9. Such a storage structure was reported by [10].…”

Rainfall Infiltration under Various Building Layouts Using Concrete Microseepage Wells

“…Existing flood management measures, also called low-impact development measures, include permeable pavements, green roofs, sunken green spaces, planting ditches, seepage ditches, and seepage wells [3,4]. However, more basic flood management measures typically involve cement hardening, clay, silty clay, and other materials with poor infiltration, which makes it difficult to ensure effective rainwater infiltration and runoff regulation [5,6]. us, seepage wells have been adopted to improve existing flood management measures.…”

Testing the Concept of Mitigating Overflowing Urban Drain with Permeable Road

“…This method is increasingly challenging with the occurrence of climate change phenomena as it is common for a mere one-hour rainfall to cause flash flooding. As the road is easily affected by the flash flooding scenario, this study presents an alternative design to complement the existing road system by introducing a permeable road system that could channel excess water to a water storage below the road [3], [4]. A recent study has suggested that the subsurface storage of the proposed permeable pavement system could store and convey water simultaneously [5].…”