Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas
Urban development naturally aggravates flood damage, causing severe damage yearly. Preparation for flood damage is a part of urban planning, but it is not easy to establish clear mitigation measures in densely populated urban areas. This study analyzed the applicability of trunk drainage sewers as a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/21/3399 |
| _version_ | 1797466246129647616 |
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| author | Changjae Kwak |
| author_facet | Changjae Kwak |
| author_sort | Changjae Kwak |
| collection | DOAJ |
| description | Urban development naturally aggravates flood damage, causing severe damage yearly. Preparation for flood damage is a part of urban planning, but it is not easy to establish clear mitigation measures in densely populated urban areas. This study analyzed the applicability of trunk drainage sewers as an alternative to installing abatement facilities, a typical structural measure for reducing flood damage in dense urban areas. The study areas included three areas in South Korea where flood damage had previously occurred, and the input parameters of the flood analysis model were calibrated based on the measured runoff, followed by testing with inundation traces. The results of three watersheds were qualitatively evaluated using the Lee Sallee Shape Index (LSSI) method. The applicability of the trunk drainage sewer system in the Gunja and Dowon watersheds were “Excellent” and “Good” in the Dorim watershed. The analysis results for each trunk drainage sewer condition indicated that the peak flow reduction was the greatest at 40% and 60% dimensionless upstream area ratio (DUAR) for 1000–5000 m<sup>3</sup> and 10,000 m<sup>3</sup>, respectively. High hydrological applicability under the same rainfall conditions was demonstrated consequent to analyzing the applicability of the installation of a typical reduction facility and trunk drainage sewer. |
| first_indexed | 2024-03-09T18:33:05Z |
| format | Article |
| id | doaj.art-4a795bf7fc2248c697b39ab5c12479ef |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T18:33:05Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-4a795bf7fc2248c697b39ab5c12479ef2023-11-24T07:18:51ZengMDPI AGWater2073-44412022-10-011421339910.3390/w14213399Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense AreasChangjae Kwak0National Disaster Management Institute, Ulsan 44538, KoreaUrban development naturally aggravates flood damage, causing severe damage yearly. Preparation for flood damage is a part of urban planning, but it is not easy to establish clear mitigation measures in densely populated urban areas. This study analyzed the applicability of trunk drainage sewers as an alternative to installing abatement facilities, a typical structural measure for reducing flood damage in dense urban areas. The study areas included three areas in South Korea where flood damage had previously occurred, and the input parameters of the flood analysis model were calibrated based on the measured runoff, followed by testing with inundation traces. The results of three watersheds were qualitatively evaluated using the Lee Sallee Shape Index (LSSI) method. The applicability of the trunk drainage sewer system in the Gunja and Dowon watersheds were “Excellent” and “Good” in the Dorim watershed. The analysis results for each trunk drainage sewer condition indicated that the peak flow reduction was the greatest at 40% and 60% dimensionless upstream area ratio (DUAR) for 1000–5000 m<sup>3</sup> and 10,000 m<sup>3</sup>, respectively. High hydrological applicability under the same rainfall conditions was demonstrated consequent to analyzing the applicability of the installation of a typical reduction facility and trunk drainage sewer.https://www.mdpi.com/2073-4441/14/21/3399dense urban areaflood damagereductiontrunk drainage sewer systemapplicability analysis |
| spellingShingle | Changjae Kwak Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas Water dense urban area flood damage reduction trunk drainage sewer system applicability analysis |
| title | Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas |
| title_full | Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas |
| title_fullStr | Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas |
| title_full_unstemmed | Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas |
| title_short | Applicability Analysis of Trunk Drainage Sewer System for Reduction of Inundation in Urban Dense Areas |
| title_sort | applicability analysis of trunk drainage sewer system for reduction of inundation in urban dense areas |
| topic | dense urban area flood damage reduction trunk drainage sewer system applicability analysis |
| url | https://www.mdpi.com/2073-4441/14/21/3399 |
| work_keys_str_mv | AT changjaekwak applicabilityanalysisoftrunkdrainagesewersystemforreductionofinundationinurbandenseareas |