It is not cost effective to raise the density of catch basins in preparation for heavy rainfall in terms of construction and maintenance. Our researchers have developed the new catch basin for increasing interception capacity of runoff with internal filtration structure. To compare interception capacity of an existing catch basin with the invented catch basin, a hydraulic experiment device with 4% of road gradients and 0.2% of road gradients was constructed. For runoff conditions of 4.4 l/s, 6.7 l/s and 10.4 l/s, capability of runoff and separation capability of debris (sand and leaves) were evaluated. As the main experimental results, the effectiveness of the developed catch basin has been verified with an increase in interception rate of approximately 22% for the runoff of 6.7 l/s as heavy rainfall. However, the results of invented catch basin showed only 4.5% of settlement rate of debris regarding sand. Therefore, the authors proposed an improved tilted screen structure additionally. After reviewing the performance of improved catch basin, application of the invented catch basin is expected to drain runoff effectively when it is applied to the faulty road drainage section.

1. 서 론
 2. 차집효율 증대형 빗물받이의 개발
  2.1 빗물받이 설계기준 고찰
  2.2 차집능력 증대형 빗물받이의 설계
 3. 빗물받이 차집효율 분석 평가
  3.1 실험 재료 및 방법
  3.2 차집효율 시험 분석 결과
   3.2.1 노면 유출수 차집효율 비교 분석
   3.2.2 빗물받이 협잡물 차집량 비교 분석
   3.2.3 내부 경사스크린의 거름구조 개선
 4, 결 론
 사 사
 References

• 한상종(한국건설기술연구원 환경플랜트연구소, Korea Institute of Civil Engineering and Building Technology, Environmental and Plant Engineering Research Institute) | Sangjong Han Corresponding author
• 신현준((주)엔포텍디에스, N-fourtechDS) | Hyunjun Shin
• 황환국(한국건설기술연구원 환경플랜트연구소, Korea Institute of Civil Engineering and Building Technology, Environmental and Plant Engineering Research Institute) | Hwankook Hwang