• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
• /
• pp.257-262
• /
• 1996

Large amount of water is diverted annually for irrigation along the Yellow River. Owing to the tremendous sediment carried by the river , sediment deposits is an important problem in irrigation and drainage system. The sediment has to be taken out by machines from the irrigation system, otherwise water can not be available in the right place at the right time. In order to improve the sediment desilting efficiency, the sediments that settle in certain sites of a irrigation system must be removed by different desilting machines with special performance and working conditions. Those certain sites include : the diversion canal in the flood plain , the mouth of inlet, settling basin , irrigation and drainage system. In view of removal sediment above, the paper presents the ideas of type selection of desilting machines applied to certain sites. Proposals of making further improvement on performance for some desilting machines are also put forward.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 2004년도 학술발표회
• /
• pp.1238-1241
• /
• 2004

Yongsan river 4th agricultural comprehensive development project is being developed in order to strengthen the competitiveness in the southwest sea-side district, to construct the area for the special product and so on. Different from other development project, this project is to use water from its watershed by means of using regulating reservoirs, small reservoirs and farm ponds. but the number or regulating reservoirs, small reservoirs and farm ponds involved in this project are 7, 147 and 13 respectively. So it is necessary to develope the irrigation water management system for the purpose of efficient water use in Yougsan river fourth district. In this study, the irrigation water management system was developed and by using this system. efficient water using plans could be established.

• Spatial Information Research
• /
• 제17권3호
• /
• pp.329-339
• /
• 2009

역사문화지도는 한 지역의 개별적인 유적에 대한 단순한 집성이 아니라, 다양한 구성요소들의 시.공간적 연관성에 대한 종합적인 반영이 이루어져야만 한다. 문명의 발상지라고 할 수 있는 수계권의 역사와 문화, 그리고 생활환경의 연구는 지금까지의 지역단위 차원을 넘어서 타 문화권의 비교, 나아가 국가 및 대륙간의 문명사 연구에도 일익을 담당할 수 있을 것이다. 이러한 맥락에서 본 연구는 우리 고유의 역사와 문화를 토대로 문화적 유형화 및 지역적 정체성 파악을 위한 공용의 문화정보시스템 구축에 중점을 두었다. 즉, 영산강유역권 역사문화정보시스템은 수계권의 다양한 역사문화정보를 전자지도의 형태로 담아내고, 인터넷을 통해 공유하는 Web GIS 기반의 통합정보시스템인 것이다. 상기의 시스템은 고고, 건축 미술, 생태환경, 역사, 민속 문학, 음식 등 각 분야별 기초조사 자료에 의한 종합적인 산출물이며, 학제간 연구에서의 활용뿐만 아니라 공공의 자료로써 새로운 가치창출에 그 목적을 두고 있다. 결과적으로 Web GIS 기반의 영산강유역권 역사문화정보시스템 구축에 따른 기대효과는 첫째, 영산강유역 분야의 연구에 대한 로드맵을 확인하는데 공헌할 수 있으며, 둘째, 영산강유역의 역동적 구조와 특성에 대한 학제적 탐구를 촉진하는 역할을 한다는 것이다. 그리고 셋째, 역사문화지도 연구를 위한 전문화 된 전자 학술자원 제공의 본격적 발판을 마련하는 효과를 기대할 수 있다.

• 한국해양공학회지
• /
• 제20권4호
• /
• pp.50-57
• /
• 2006

The effect of discharges from the Seomjin River on the dispersion of thermal effluent from the Hadong Power Plant, located along the south coast of Korea, was investigatedusing intensive field observation and three-dimensinal Princeton Ocean Model simulations. A POM and observed CTD data was used to predict the mixing behaviour of the Summer freshet, during the July 2005 intensive observing period. The dispersal of the river discharge anomaly, associated with the Seomjin River plume, was seen to be highly responsive to tidal currents and river flows during the spring tide.

• 한국물환경학회지
• /
• 제30권2호
• /
• pp.138-147
• /
• 2014

In order to determine the best operating rules for the Nakdong River, three cases were applied to analyze the simulated results of water supply capacity by HEC-ResSim model. This study discussed to present the best operating rules for conjunctive operating of existing the dams and new constructed the weirs through system network. The system network was constructed considering the water supply, the river environment and the operating facility. The water supply capacities are separately evaluated for each case applying the best rules. It is case1 that the dams are operated individually, case2 that the dams are operated in conjunction with the others dams, and case3 that dams and weirs are operated in conjunction with the others dams-weirs. Comparing the cases, case 3 has shown the best water supply capacity of the Nakdong River.

• 한국습지학회지
• /
• 제16권4호
• /
• pp.389-402
• /
• 2014

본 연구에서는 기존에 구축 운영 중인 COSFIM과 FLDWAV간 연계를 통해 다기능보 상 하류 구간 등 하천내 주요 관심구간에 대한 1차원 및 2차원 수리분석을 수행할 수 있는 시스템을 개발하고 낙동강 8개 다기능보를 대상으로 사업 전 후 수리특성 분석을 수행하였다. 각 수치모형은 활용목적에 따라 장 단점을 가지고 있기 때문에 상황에 적합한 모형을 선택적으로 활용할 수 있을 것이며, 기존의 1차원 수리 수문 모형으로 분석할 수 있었던 선 개념 지점 개념의 정보 뿐 아니라 추가적으로 공간 격자 개념의 정보를 제공받을 수 있는 다차원 모의를 수행함으로써 하천에서의 물리적 현상을 적절히 고려한 공간적 수리특성을 반영한 하천관리가 가능할 것이다.

• 한국정보통신학회논문지
• /
• 제24권2호
• /
• pp.198-203
• /
• 2020

본 논문에서는 소규모 강의 범람 예측을 위한 인공 수위 예측 시스템을 제안한다. 강의 수위 예측은 홍수 피해를 줄일 수 있는 대책이 될 수 있다. 그러나 하천 범람에 영향을 미치는 강 또는 강우의 고유 특성으로 인해 범람 모델을 구축하기가 어렵다. 일반적으로 하류 수위는 상류의 인접한 수위에 영향을 받는다. 따라서 본 연구에서는 측정 지점에서 수위를 예측하기 위해 두 개의 상류 측정 지점의 수위를 순환신경망(LSTM)을 사용하여 인공 지능 모델을 구축했다. 제안 된 인공 지능 시스템은 수위 측정기를 설계하고 Nodejs를 사용하여 서버를 구축했다. 제안 된 신경망 하드웨어 시스템은 실제 강에서 6시간마다 수위를 잘 예측함을 알 수 있었다.

• 환경영향평가
• /
• 제16권3호
• /
• pp.187-194
• /
• 2007

It started road constructions around river in 1990s. These maintenances concentrate on city river. Because river lives no living things and men don't come near there. But in spite of these river environment go to rack, river maintenances still keep on using preexistence method since 1990s. Only a part of city river environment maintenances consider environmental ability of passive river, river maintenance of a purpose of flood control still don't consider in the concrete. Because propulsion device that consider environment ability of passive river and possible application techniques don't complete. In accordance, A natural river maintenance needs absolutly a series of river projects. Because a natural river maintenance prevents a damage of environment ability. This study is to assume the flood really happened and to carry out the flood damage simulation needed in overflow simulation about the inundated zone. Also, This study examine unstable part about the hydraulic characteristic as velocities, stream power, shear, hydraulic depth, flow area in basin. And this study applied the HEC-RAS(river analysis system) model to predict flood overflow in youngsan river basin. Project flood is used the return period 100 year and inputed data that was calculated in intensity figures of illumination.

• Water Engineering Research
• /
• 제2권2호
• /
• pp.113-121
• /
• 2001

The objective of this study is to develop a prediction mode for a flood forecasting system in the downstream of the Nakdong river basin. Ranging from the gauging station at Jindong to the Nakdong estuary barrage, the hydraulic flood routing model(DWOPER) based on the Saint Venant equation was calibrated by comparing the calculated river stage with the observed river stages using four different flood events recorded. The upstream boundary condition was specified by the measured river stage data at Jindong station and the downstream boundary condition was given according to the tide level data observed at he Nakdong estuary barrage. The lateral inflow from tributaries were estimated by the rainfall-runoff model. In the calibration process, the optimum roughness coefficients for proper functions of channel reach and discharge were determined by minimizing the sum of the differences between the observed and the computed stage. In addition, the forecasting lead time on the basis of each gauging station was determined by a numerical simulation technique. Also, we suggested a model structure for a real-time flood forecasting system and tested it on the basis of past flood events. The testing results of the developed system showed close agreement between the forecasted and observed stages. Therefore, it is expected that the flood forecasting system we developed can improve the accuracy of flood forecasting on the Nakdong river.

• 한국지열·수열에너지학회논문집
• /
• 제9권2호
• /
• pp.25-31
• /
• 2013

It has become very important for unused energy to be used for building air conditioning. Economic evaluation on energy system by using river water as a heat source, which is one of the unused energy, was carried out. The floor area of the building and the distance between heat source equipment and river was assumed $50,000m^2$ and 200 m. General heat source system using absorption chiller-heater was used for comparing to the energy saving system, and payback period method using initial cost and running cost of two systems, was used to perform economic evaluation. According to development of high capacity of water source heat pump which is appropriate for using river water, initial cost for the system has been reduced. Payback period was about 3.2 years, and this period might be shortened if nation's economic support enact.