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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.4, 2007³â, pp.345-357
PCSWMM ¸ðÇüÀ» ÀÌ¿ëÇÑ ¾È¾çõ À¯¿ª¿¡¼­ ³»¼öħ¼öÀÇ ½Ã.°ø°£Àû ÇØ¼®
( Temporal and Spatial Analysis of Extended Sewer Surcharge on Anyangcheon Watershed Using PCSWMM )
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Most of lowland in urban area has high flood risk because of short concentration time and high peak discharge by increasing of the impervious area and insufficient capacity of internal drainage due to the topographical characteristic that the water level inside of levee is lower than that out of levee. Therefore, spatial management for the flood control estimating the flood risk area using the design floods has been performed. But, for more efficient flood control, the temporal management considering occurrence time of inundation is needed as well as the spatial management. The flood risk area, priority area for flood risk and the extended surcharge area for moving storm were given through the spatial and temporal analysis of the occurrence of inundation. The study area is the downstream watershed of Anyangchoen in Seoul where most of inundation had been occurred. In this area, the main causes of inundation are the lower land elevation than the water level out of levee and the insufficient conveyance of drainage system. The EXTRAN block of PCSWMM good at analysing channel and pipe flow was used to simulate the manhole surcharge area and this area was selected as inundation area(extended surcharge area). The inundation areas in the simulation for every rainfall frequency(10-year, 20-year, 30-year), duration of design rainfall were selected as flood risk areas and some of flood risk areas coincided with the areas that the extended surcharge was occurred faster than the other areas were selected as priority areas for flood risk management. Moreover, the spatial and temporal distribution of extended surcharge manhole for moving storm was analysed and it indicated that extended surcharge was occurred most in the faster moving storm of downstream direction. The selection of priority area for flood risk management and analysis of distribution of extended surcharge area for moving storm could make actions for evacuating from flooding area more promptly in flood forecasting and warning system and make allocation of resources for flood control more efficiently.
 
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³»¼öħ¼ö;PCSWMM;¾È¾çõ;¿ì¼±°ü¸®Áö¿ª;À̵¿°­¿ì;extended surcharge;PCSWMM;Anyangchoen;flood risk map;priority area for flood risk management;moving storm;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.4, 2007³â, pp.345-357
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200727543088282)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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