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가동보 및 배수문운영을 고려한 주운수로 홍수위 산정모형 구축
노준우,박명기,심명근,이상진,Noh, Joon-Woo,Park, Myung-Ki,Shim, Myung-Geun,Lee, Sang-Jin 한국수자원학회 2012 한국수자원학회논문집 Vol.45 No.9
주운수로 홍수기 수위 산정을 위하여 미 공병단에서 개발한 HEC-RAS 모형을 적용하였다. 아라뱃길은 다양한 수리구조물의 조작을 통하여 선박운항 및 홍수처리가 이루어지며 유입홍수, 한강수위, 그리고 서해조위 변동과 연계하여 귤현보, 서해배수문, 체절수문, 그리고 배수펌프장등의 대표적인 구조물 운영을 지원할 수 있는 홍수위 계산모형이 필요하다. 특히 서해배수문의 개도를 결정하기 위하여 외조위와 내수위 변동을 동시에 고려한 수문운영이 필요하여 HEC-RAS의 Rule-script 기능을 적용하여 이러한 특성을 반영하였다. 모형의 검보정을 위하여 2010년 9월 홍수사상을 적용하였으며 모형으로부터 계산된 수위값과 관측된 수위값이 서로 잘 일치함을 확인하였다. 본 연구에서 구축된 HEC-RAS모형은 홍수기 주운수로 운영에 기여할 것으로 판단된다. HEC-RAS has been applied to simulate water level variation in the Ara waterway during the flood season. To support decision making necessary for operation of the hydraulic structures especially during the flood season, it is important to consider various factors such as water level of the Han River, Gulpo River, and tidal level of the west sea in conjunction with operation of the hydraulic structures such as the Gyulhyun Weir, the West sea gate, and pumping stations. Especially for operation of the west sea gate, the Rule-script option was employed to determine the opening height considering the variation of the water level in the waterway and the west sea simultaneously. For model verification, comparison of water level computed at the upstream and downstream of the regulation weir shows a good agreement with observed data measured during the flood event in September 2010. The HEC-RAS model developed in this study will contribute to support operation of the waterway during the flood season.
연구논문 : Flushing 방류로 인한 섬진강 하구부 염수침입 영향분석
노준우 ( Joon Woo Noh ),이진영 ( Jin Young Lee ),신재기 ( Jae Ki Shin ) 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.3
Estuary is a transitional zone between river and ocean environment that receives the maritime and riverine influence simultaneously. Estuaries are the most productive habitats because their incoming water provides large quantities of nutrients. The Seomjin River estuary, located in the middle south of Korea, has no barrage and shows natural characteristic of estuary. However, due to dredging and reclamation the environment of the estuary has been changed significantly in the river mouth. In addition, increased freshwater intake in midstream of the Seomjin River results in salinity intrusion. In this paper salinity variation in downstream estuary of the Seomjin River has been simulated and tested using EFDC model. The results of simulation were compared with measured data collected at three points, Culture & Art Center, Sumjin Iron Bridge, and Mokdori, located at 9Km, 14Km, and 15.5Km respectively from downstream estuary. Based on the simulated results, the contribution of the flushing discharge has been evaluated in preventing the salinity intrusion by increasing the discharge flowrates released from the Juam dam.
연구논문 : 식생분포에 따른 하도의 통수능 검토를 위한 3차원 모형의 적용
노준우 ( Joon Woo Noh ),이진영 ( Jin Young Lee ),안기홍 ( Ki Hong Ahn ) 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.1
Recently, the social and environmental functions of nature river are important due to the increase of expectation for river restoration. So it should be considered the effect of vegetation affecting the conveyance capacity and hydraulic resistance. However, it has not yet proposed a objective standard and modeling method to estimate the effect of conveyance capacity according to vegetaion distribution in the watercourse such as water level or velocity. Therefore, this study simulates the variations of water level and velocity using 3-dimensional hydrodynamic model, EFDC, to consider a conveyance capacity in downstream of the Soyang Reservoir. The simulation results were validated using statistical index such as F-test and T-test. As results, the water level rises about 0.01 to 0.47m and velocity difference are about -0.95m/s to 0.23m/s.
연구논문 : 파키스탄 파트린드댐의 저수지 퇴사관리를 위한 배사효과 분석
노준우 ( Joon Woo Noh ),박진혁 ( Jin Hyeog Park ),허영택 ( Young Teck Hur ),김상호 ( Sang Ho Kim ) 한국물환경학회(구 한국수질보전학회) 2013 한국물환경학회지 Vol.29 No.6
Reservoir sedimentation is one of the major concerns for sustainable reservoir operation. Since sediment concentration of the rivers in the Himalayan Mountain is very high, a proper sediment management scheme is mecessary. This paper presents long-term reservoir sedimentation and sediment flushing based on the gate operation. Focused on the reservoir to be constructed for the Patrind hydropower project in Pakistan, 4 different flushing scenarios were proposed in this study to prevent successive sedimentation. By extending flushing period and by increasing the flushing discharge for 2 times, the flushing rate increases up to 53.2% and 43.6% in proportion to flushing period and dischrge, respectively. Based on the simulation presented in this paper, it is expected to establish efficient sediment management plan to increase hydro power generation and sediment flushing simultaneously.