| Title |
Evaluation of Water Cycle Improvement in LH Institute Using SWMM-LID Model |
| Authors |
정종석 ( Jong-suk Jung ) ; 정광욱 ( Kwang-wook Jung ) ; 강수만 ( Suman Kang ) ; 현경학 ( Kyong-hak Hyun ) |
| DOI |
https://doi.org/10.15681/KSWE.2018.34.3.308 |
| Keywords |
Hydrology; LID; Runoff reduction; SWMM; Urbanization |
| Abstract |
SWMM-LID was calibrated with flow monitoring data in LHI to evaluate runoff after LID application. The flow rate in the B basin was estimated to be 0.94 and 6.15 for O/S and Dv, respectively. In the A and C basins, the difference between the observed and simulated data was greater than in the B basin. As a result of runoff reduction efficiency by the application of LID facilities, the change of infiltration increased from 34.6 % to 45.8 % in the entire watershed, and the runoff decreased from 58.8 % to 46.3 %. In the runoff reduction of each LID facility, rain garden E showed the highest effect with 99.9 % and bioretention B showed the lowest effect with 27.5 %. In order to evaluate the efficiency of each LID facility, a comparison is made between the pore volume (V) of the LID and the catchment area (A). The runoff showed a runoff reduction effect of about 70 % above the 0.1 volume/area (V/A) value. As a result of examining the runoff reduction with LID facilities by the LID module of SWMM, a reasonable design is possible by reflecting the appropriate LID volume to drainage area. |