• 헤리티지:역사와 과학
• /
• 제51권3호
• /
• pp.72-87
• /
• 2018

본 연구는 월지의 서측 호안 일대에 존재했던 출수구(出水口)와 구거(溝渠)를 재조명하고, 서측 호안의 출수시설이 월지의 역사적 배수체계와 연관되었을 가능성에 주목하고 있다. 세부적으로는 출수구의 위치와 형태, 월지 북서측 구거와 서측 호안 출수구의 관계성, 서측 호안 출수시설의 조성시기와 성격을 중점적으로 고찰하였다. 1975년 발굴조사로 확인된 서측 호안의 출수구는 1922년 실측도면에 기록된 수낙구(水落口)와 동일시설로 판단된다. 따라서 1920년대 이전부터 월지의 서측 호안에는 별도의 출수시설이 존재했을 가능성이 높다. 서측 호안 출수구는 장방형 석재를 가공한 시설이며, 수위조절을 위한 4개의 배수공(排水孔)이 설치되어 있었다. 배수공을 통한 출수방식은 월지 북측 호안에서 조사된 출수시설과 동일하다. 1913년 제작된 지적도에서는 월지의 북서측 외곽으로 구거가 확인된다. 구거와 출수구는 근거리에 위치하며, 동일한 축선을 형성하고 있었다. 따라서 구거와 출수구는 월지의 배수체계와 연관된 유기적 시설로 판단된다. 특히 월지 북서측 구거는 서측 호안 출수시설의 조성시기를 1910년대 이전으로 소급할 수 있는 단초다. 출수구의 배수공을 통해 유입된 물은 구거를 통해 월지의 북서측 일대로 배출되었다. 서측 호안 출수시설의 조성시기와 성격은 두 가지 측면에서 해석된다. 첫 번째는 월지가 농업용 저수지로 기록되었다는 점, 월지의 북서측 일대가 농경지로 이용되었다는 점에 근거한 '조선시대의 농업용 관개시설'이다. 두 번째는 출수구가 월지의 수제선(水際線)을 형성하는 하층 호안석축에 설치되었다는 점, 최상단 배수공의 높이가 월지의 만수위(滿水位)와 유사하다는 점에 근거한 '월지 조영 당시의 수위조절용 출수시설'이다. 관련 근거와 정황을 고려하면 후자의 가능성이 더욱 높다고 판단된다.

• 한국농공학회논문집
• /
• 제47권6호
• /
• pp.15-24
• /
• 2005

The normalization on the characteristics of water level change at the upstream gauging station was attempted according to the operation of drainage sluice gate of the Geumgang estuary dam. The characteristics were normalized by the analysis of water level change and by the linear-regression of the water level data measured at the inner station of Geumgang estuary dam and upstream gauging station. The results of normalization may be referred to the management of Geumgang estuary lake, the operation of pumping and drainage stations in the shore of the lake. The mean response time of water level change on Ibpo, Ganggyeong and Gyuam water level station were 39,81 and 160 minutes, when sluice gate was opened respectively. The mean velocity of surface wave, the mean displacement of water level change, the mean time of water level change and the mean rate of water level change varied largely depending on the location of gauging station and the characteristics of stream section of the water level gauging station.

• 한국관개배수논문집
• /
• 제17권2호
• /
• pp.105-114
• /
• 2010

Tidal land reclamation provided water resources and land for agriculture and contributed stable crop production. However, climate change by global warming disrupts the hydrologic circulatory system of the earth resulting in sea level rise and more frequent flood for reclaimed arable land. Recently, Suyu reclaimed paddy field in Jindo-gun experienced prolonged inundation after heavy rainfall and there is a growing risk of flood damage. Onsite survey and flood analysis using GATE_Pro model of Korea Rural Corporation were conducted to investigate causes of flooding. To perform the analysis, input data such as inflow hydrograph, the lowest elevation of paddy field, neap tide level, management level of Gunnae estuary lake at the time of the flood were collected. Flood analysis confirmed that current drainage facilities are not enough to prevent 20year return period flood. The result of analysis showed flooding more than 24hours. Therefore, flood mitigation alternatives such as sluice gate expansion, installation drainage pumping station, refill paddy land, and catch canal were studied. Replacing drainage culvert of Suyu dike to sluice gate and installing drainage pumping station at the Gunne lake were identified as an effective flood control measures. Furthermore, TM/TC (SCADA) system and expert for gate management are required for the better management of drainage for estuary dam and flood mitigation.

• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2002년도 학술발표회 발표논문집
• /
• pp.133-136
• /
• 2002

A simulation by the TOPAS model, two dimensional finite difference model was performed on the flows through drainage lock gate for the Saemangeum tidal reclamation project. Analysis focus on the changes of intertidal zone areas according to the operation scheme of the gate. The intertidal zone areas were analyzed as $66{\sim}70\;km^2$ when the opening of the gate was 300 m. It occupied about $85{\sim}90%$ of intertidal zone areas compared to that the Mangyung sea basin was opened without sea-dike. It appeared to be the most effective in terms of securing enough intertidal zone areas when the gate was operated as inflowing sea-water after 2 day's drainage.

• 한국관개배수논문집
• /
• 제7권1호
• /
• pp.8-18
• /
• 2000

The variations of water quality due to inflow of sea water by gate operation were observed in Sihwa Lake. The distributions and concentration of salinity, temperature, dissolved oxygen, nutrient were investigated from Feb. 1997 to Jul. 1998. The salinity

• 한국관개배수논문집
• /
• 제14권1호
• /
• pp.67-79
• /
• 2007

Concrete repair and reinforcement is a complex process, presenting unique challenges very different from those experience in the field of construction. The purpose of this study is to analyze the pattern and mechanism of deteriorations in irrigation and drainage structure. Damage and deteriorated structures are classified with several types. This provides a survey of crack repair methods, including a summary of the procedures that are being used. It is systematically evaluated with the disintegration on irrigation & drainage structure; drainage sluice gate, pumping station, drainage pumping station. Following the evaluation of the irrigation & drainage structure, a suitable repair and reinforcing procedure can be selected based on this report

• 한국관개배수논문집
• /
• 제3권1호
• /
• pp.10-19
• /
• 1996

A hydraulic model test was peformed for radial gate in estuary sulices to find out a proper bottom shape of gate which minimize the amplitudes of vibration. Firstly natural frequencies ore measured, and the results were compared with the numerical analysi

• 한국수자원학회논문집
• /
• 제38권3호
• /
• pp.189-198
• /
• 2005

본 연구에서는 조력발전소 배수갑문의 형상과 배치에 따른 방류능력을 해석하는데 3차원 수치모의가 효과적으로 이용될 수 있음을 보였다. 3차원 수치모형은 RANS를 지배방정식으로 하는 FLOW-3D 모형을 이용하였다. 본 연구결과 배수갑문의 방류능력은 물받이길이와 도류벽의 접근각도에 큰 영향을 받는 것으로 나타났다. 그리고 이의 개선 여부에 따라 $10\%$ 이상의 방류량 차이가 발생하였다. 또한 방류량은 배수문과 수차구조물을 연결하는 구조물의 형상과 물받이 끝 사면경사의 영향을 받는 것으로 나타났다. 본 연구에서는 배수갑문의 설계시 방류능력 개선을 위해서는 수리학적 검토가 필요하며, 수치모형실험이 수리모형실험과 더불어 유용한 해석도구로 이용될 수 있음을 보였다.

• 한국지하수토양환경학회지:지하수토양환경
• /
• 제28권3호
• /
• pp.1-11
• /
• 2023

Permeable reactive barrier (PRB) is a prominent in-situ remedial option for cleanup of contaminated groundwater and has been gaining increasing popularity in recent years. Funnel-and-gate systems, comprised of two side wings of impermeable walls and a central gate wall, are frequently implemented in many sites, but often suffers from bypassing of groundwater due to the progressive clogging of the gate wall over extended period of time. This study investigated technical feasibility of a hybrid funnel-and-gate system designed to address the flow deterioration in the gate wall. The key attribute of the proposed hybrid system is the operation of drainage units at the barrier walls and rear end of the gate wall. A conceptual modeling with MODFLOW indicated the groundwater inside the barrier was maintained at appropriate level to be guided toward the gate wall, yielding constant discharging of groundwater from the gate.

• 상하수도학회지
• /
• 제25권6호
• /
• pp.869-875
• /
• 2011

Ministry of Environment has been promoting BTL business of the sewer rehabilitation which continues from 2005 up to now. Sewer rehabilitation is classified into three parts : wastewater pipe rehabilitation, rainwater pipe rehabilitation and drainage equipment rehabilitation. Drainage equipment rehabilitation is that drainage pipe connects wastewater pipe directly without water-purifier. In the drainage equipment construction, it is inevitable to have the damage of ground structures(wall, gate and U drain, etc) when an open excavation method is used. Therefore it is necessary to develop non-excavation method to connect drainage pipe and wastewater pipe like jacking method to avoid the damage of ground structure. This paper has conducted an analysis of the non-excavation method using a boring machine attached to backhoe, which is issued the verification certificate of environmental technology according to the Development of and Support for Environmental Technology Act, article.7. The index set in this analysis was sectionalized to the condition of construction, the grade of drainage pipe, the size of excavated hole, the amount of waste cement concrete and asphalt concrete and the benefit effect compared to open excavation method.