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1 w y wz 10«3y 253~258 ( ) Journal of Korean Society of Urban Environment ³ w Á» Á Á y w y œw ( , k) Study on Determine of Detention Pond in Small Developed Area In-Soo Chang ½ Ki-Bum Park ½ Myeng-Jin Lee ½ Jun-Ho Lee Department of Environment Engneering, Chungju University (Received 22 November 2010 : Accepted 9 December 2010) Abstract In this research, we construct the flood runoff model of small watershed and determine the probability of rainfall and the detention basin volume by analyzing precipitation. PondPack model was easily and conveniently in use. Additionally, it can be practically applied in business for estimating the volume of flood runoff and detention basin. A single detention pond is inflow 5.91 cms and outflow 3.02 cms but double detention pond is inflow 5.55 cms and outflow 3.63 cms so, double detention pond better than a single pond inflow control but outflow control is more need regulate skill. Key Words : Detention Pond, Developed Area, PondPack PondPack w ³ y x wš mw y w e z w PondPack v ƒ mw cms, 3.02 cms ù, 5.55 cms š, 3.63 cms ùkû. ƒ 2 ƒ z ƒ q, q. : y,, PondPack I. w»»z y» w jš w, w w ƒ š. y x w w eš 1). y w w ew w y w w Corresponding author [email protected] ù w w ƒ. y w y g y y j w w. y ù y w ü w ew y z y w v ƒ. y w w e (I, II) 1) š s 253

2 254 Á» Á Á y w ƒ y y ƒ q w. w Fig. 1 5). 2. e e Fig. 1. ³. w 2) ƒ. w k (BMP : Best Management Practice) w e w y w w 3). w e y w f ƒ z ƒ f 4). w w w e y w yw» w y ew vw yw» wš w Pond Pack w ³ y x wš, mw y w mw y z mwš ƒ mwš w. 1. e z II. y w ew» w ƒ ƒ x,, w w š w» œ» { ƒ wƒ ƒ w œ w w w. e e š w w ƒ w ƒƒ ew w, m z e eƒ w š wš w z mw v ƒ. ü ƒà ewš ƒ ƒ w zw. w j x w w» w j v w z w 5). III. PondPack w 1. PondPack w (synthetic rainfall), š (runoff hydrograph), (culvert), (channel), pond (pond sizing), (outlet structure) pond w w. PondPack ³ ³ ¾ stormwater x 6). d 1970 l d w x ¾ ƒ ù, 1970~1972 d ƒ w w 30» w 1973 l 2006 ¾ 34 w y w. Table 1 y ùkü. 2. PondPack w 2.1. e 0.2 km 2 w w w ew Fig. 2 w ew PondPack w w.

3 Table 1.» y x» y (mm/hr)» ( ) ³ w Fig š. Fig. 2. e y. Fig. 3. ü š. ü w w m y w y k w, y w - š š - y Fig. 3, Fig. 4, Fig PondPack 5.91 m 3 /s, 3.02 m 3 /s, 48.90%. - Table 2 130, š ƒƒ (EL.m), ƒƒ 8247 m 3. PondPack w w, Fig š. Table 2. (PondPack) (km 2 ) 0.20 š(el. m) š(el. m) (m 2 ) 5689 (m 3 ) š(el. m) (m 3 /s) 5.91 (m 3 /s) 3.02 (m 3 ) 8247 š (EL. m) % ew y 48.90% ùkû, w 3.02 m 3 /s ùkû e ew w PondPack w w, Fig. 6 w mw

4 256 Á» Á Á y Fig. 6. e y. Fig š. Fig. 6. e y. Fig š. Fig ü š. Fig ü š. ƒƒ ew. ü š Fig. 7, Fig. 8 Fig š., - š Fig. 9, Fig. 10 ùkü. 1 -, PondPack 4.02 m 3 /s, 2.25 m 3 /s, ƒƒ 44%. 2 - PondPack 1.53 m 3 /s, 1.38 m 3 /s, ƒƒ 9.8%. Fig. 11 Fig. 12 y ùkü. 1 - PondPack 100 š (EL.m) ùk ûš ƒƒ 4314 m 3.

5 ³ w 257 Fig š. Table (km 2 ) š(el. m) š(el. m) (m 2 ) (m 3 ) š(el. m) (m 3 /s) (m 3 /s) (m 3 ) š (EL. m) % 9.8% 2 - PondPack 80 ùkû š ƒƒ (EL.m) ùkûš ƒƒ 997 m 3. PondPack w w 2 ù ew y 1 44%, 2 9.8% ùkû, w ƒƒ 2.25 m 3 /s, 1.38 m 3 /s ùkû Table 3 w ùkü. IV. š ³ y w y 1 ew 2 ù ew w w w, PondPack w. y y z jù w š q w œ l g w» Table (km 2 ) š(el.m) š(el.m) (m 2 ) (m 3 ) š(el.m) (m 3 /s) (m 3 /s) (m 3 ) š (EL.m) (%) 48.90% 44% 9.8% ƒ w y» w. 2 y ù w y z wù w w j ùkû. w Table 4 ùkü. V. m yƒ w ƒ y j y ew z w.» HEC-HMS w w ù PondPack w, y y e w.» y w v ù, v wù PondPack ƒ mw wš y w. w ew, y 48.9%, z jù w š l g w» ƒ w y» w q. w, 5.91 m 3 /s, š 3.02 m 3 /s, ƒƒ 8247 m 3.

6 258 Á» Á Á y w, m 3 /s š, 2.25 m 3 /s ƒƒ 4314 m m 3 /s, š, 1.38 m 3 /s, ƒƒ 997 m 3. eƒ z ƒ q,» z ƒ w q. e w 48.90%,%, e 1 44%, š, 2 9.8%. w y e ƒ z ƒ q, v PondPack mw ƒ w k v mw ƒ». w w x ( w» ) ww. References 1., e (I), , e (II), , y,,, w», w wz w tz, , y» (I), , y e y vw z w, w w w, Haestad, PondPack User's Manual, Urban Hydrology and Detention Pond Modeling Software, Bently System, 2001.