An Experimental Study on the Application Method of Infiltration Trench

Jung, Do-Joon; Ahn, Seung-Sub; Kim, Yun-Tae

Journal of the Korean Society of Hazard Mitigation 2010;10(6):147-154.
Published online December 31, 2010.

침투트렌치 적용방안에 관한 실험적 연구

정도준, 안승섭, 김윤태

An Experimental Study on the Application Method of Infiltration Trench

Do-Joon Jung, Seung-Sub Ahn, Yun-Tae Kim

Abstract

In this study, flood control effects for infiltration trench which is one of runoff reduction facilities were analyzed based on hydraulic experiments. Hydraulic experiments were conducted using 25 cm diameter circular pipe, and water depths for boundary conditions are 5, 10, 15, 20, 25 cm. Infiltration volume, runoff volume, runoff initiation time, final infiltration capacity and final infiltration capacity reached time etc. were measured from infiltration trench hydraulic experiment. We assumed that drainage area of each infiltration trench is $130;m^2$ ($6.5;m{ imes}20;m$) and calculated CN with area based on those experimental characteristics. In AMC-I condition, the calculated CN with five water depths is 84 for 2% pipe slope, 83 for 5% pipe slope. In AMC-III condition, the calculated CN is 84 for 2% and 5% pipe slope.

Key Words: infiltration trench; final infiltration capacity; CN; AMC-I; AMC-III

요지

본 연구에서는 침투형 우수유출저감시설 중 침투트렌치에 대한 치수효과를 25 cm 관경을 가진 트렌치를 사용하여 수위별(5, 10, 15, 20, 25 cm) 유입유량을 적용하여 실험하였고 침투량, 유출량, 유출 시작시간, 종기침투능 및 종기침투능에 도달하는 시간 등을 계측하여 실험을 통한 침투트렌치의 적용방안을 도출하고자 하였다. 침투트렌치의 규모는 배수구역을 $130m^2$($6.5;m{ imes}20;m$)로 가정하여 유역면적에 대한 CN값으로 산정하였으며 AMC-I 조건에서 5개의 침투트렌치 수위에 대한 CN은 트렌치경사 2%일 때 84, 경사 5%일 때 83으로 산정되었고, AMC-III 조건에서 CN은 트렌치 경사 2%, 5% 모두 84로 산정되었다.

핵심용어: 침투트렌치; 종기침투능