碩士 / 國立高雄第一科技大學 / 營建工程所 / 96 / The environmental and climatic changes and rapid urbanization of some areas have caused serious flooding several times in these areas, and to buffet people and property.
Most of current flood warning systems have limited function of forecasting of river stage because of the complicated geographic and hydrological data with 2-D hydraulic routing for inundation simulation model, it is necessary to establish the inundation potential maps before flooding to establish the relationship between precipitation and inundation potential.
SOBEK model which is developed by the WL|Delft Inc, the Netherlands, is selected for simulation in this study. The inundation model includes the one-dimensional channel flow model and the two-dimensional overland flow model, the former one calculates the water depth and the discharge in natural streams and the surcharges and the discharge in sewer system while the storm takes place, the latter is employed to simulate the overland flow pattern and the inundation depth in the study area.
Study flood area in Kaohsiung City with various rainfall intensity and sea level, and influence of urban sewer system drainage. The simulation results show the influence due to tides locates from the Kaohsiung port mouth up to the Zhiping Bridge of Love-River, and is serious at Chihsien Bridge. When instantaneous rain over 70.9mm/hr, the sewer system is out of capacity in Kaohsiung City, leads to flood in many areas. The simulation results also show that when rainfall intensity is below return period of 5year, draining is normal under the detention basins protection region, however, when rainfall intensity is over return period of 20years, operation of detention basins is to act under constraint for a prevention.Finally, this research studies the interaction between rainfall intensity and inundation by controlling usage of detention basins.
The results can be used for the emergency response decision makings and hazard mitigation management, hopefully the flooding calamity can be reduced.
| Identifer | oai:union.ndltd.org:TW/096NKIT5512039 |
| Date | January 2008 |
| Creators | Yi-Jhen Lin, 林怡甄 |
| Contributors | Chih-Wei Lu, 盧之偉 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 142 |
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