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관로내 하수흐름의 전단응력 향상을 위한 저수조의 활용에 관한 수리적 고찰 KCI 등재

Hydraulic consideration to improve the tractive force of sewage in sewer pipes using a storage tank

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상하수도학회지 (Journal of the Korean Society of Water and Wastewater)
대한상하수도학회 (Korean Society Of Water And Wastewater)
초록

If sewage flows for an extended time at low velocities, solids may be deposited in the sewer. Sufficient velocity or tractive force should be developed regularly to flush out any solids that may have been deposited during low flow periods. This study aims to evaluate the periods (T) during which sewage flow greater than the minimum tractive force maintains on a spot in sewer pipe system with lower tractive force or lower velocity than expected in the design step, when a storage tank installed in a place upsteam pours water into the sewer. The effect to T of design factors of storage tank and sewer pipes was evaluated assuming the uniform flow in sewers. When the area of orifice in the storage tank is 0.062 ㎡(or 0.28 m diameter), the maximum T of 31sec was maintained using the usually used preset range of values of several design factors. As the horizontal cross section of storage tank and water depth of storage tank and roughness in sewers increase, T linearly increases. Also, T linearly decreases as the diameter of a sewer pipe increases. Although T gradually decreases as the sewer pipe slope decreases to around 0.005, T decreases sharply when the slope is less than 0.003.

목차
ABSTRACT
 1. 서 론
 2. 하수관로의 전단응력에 영향을 미치는저수조와 하수관로 조건의 수식화
 3. 연구 방법
 4. 연구결과 및 고찰
  4.1 저수조의 조건에 따른 하수침전물 이송가능 전단응력 유지시간
  4.2 하수관로의 조건에 따른 하수침전물 이송가능 전단응력 유지시간
 5. 결 론
 References
저자
  • 박규홍(중앙대학교 사회기반시스템공학부) | Kyoohong Park (Dept. of Civil Engineering at Chung-Ang University) Corresponding author
  • 유순유(한국산업기술대학교 지식융합학부) | Soonyu Yu (Dept. of Consilience, ADD at Korea Polytechnic University)
  • 이태훈(중앙대학교 사회기반시스템공학부) | Taehoon Lee (Dept. of Civil Engineering at Chung-Ang University)