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Mitigating street flooding with permeable structures:A modelling case study |
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| รหัสดีโอไอ | |
| Creator | 1. Darrien Y. S. Mah 2. Rosmina A. Bustami 3. F. J. Putuhena 4. M. Al Dianty |
| Title | Mitigating street flooding with permeable structures:A modelling case study |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2565 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 4 |
| Page no. | 1091-1098 |
| Keyword | drain, permeable street, spill, stormwater detention, sustainable development, urban runoff |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | This paper describes the modelling efforts of placing a permeable street adjacent to flash-flood-causing urban drain sothat overflowing floodwaters from the drain could be absorbed by water storage structure under the street. Three types ofpermeable structures were included in the modelling with porosities of 23, 63 and 86 % representing low, medium and highstorage volumes, respectively. By using the Storm Water Management Model developed by the US Environmental ProtectionAgency, the properties of the three types of permeable structures were implemented in models imitating a commercial center andits drainage system, as a case study. The permeable street was modelled as part of the drainage system, in contrast toconventional roads rarely modelled as such. Local rainfall patterns were then used with the models of the case study, in whichwater flow characteristics of the drainage systems with and without the permeable structures were analyzed. The first type thatinvolved conventional pavers and aggregates had the least water detention time of 2 hours. The second type that consisted ofmodular precast concrete units held the water for 5 hours; and the third type that was cast-in-place concrete tank system held thewater longer for 6 hours. The longer the time floodwater is detained within a permeable structure, the better the mitigating effectsof the street flooding. The second and third types of structures were more promising than the first type. However, choosing eithersecond type or third type would be a case-by-case decision, considering various factors of the flash flood. |
