• Journal of Ecology and Environment
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• 제40권2호
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• pp.125-135
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• 2016

Background: The objectives of this study were to establish a swimming capability model for largemouth bass using the FishXing (version 3) program, and to determine the swimming speed and feasibility of fish passage through a waterway tunnel. This modeling aimed to replicate the waterway tunnel connecting the Andong and Imha Reservoirs in South Korea, where there is a concern that largemouth bass may be able to pass through this structure. As largemouth bass are considered an invasive species, this spread could have repercussions for the local environment. Results: Flow regime of water through the waterway tunnel was calculated via the simulation of waterway tunnel operation, and the capability of largemouth bass to pass through the waterway tunnel was then estimated. The swimming speed and distance of the largemouth bass had a positive linear function with total length and negative linear function with the flow rate of the waterway tunnel. The passing rate of small-size largemouth bass (10-30 cm) was 0%at a flow of $10m^3/s$ due to rapid exhaustion from prolonged upstream swimming through the long (1.952 km) waterway tunnel. Conclusions: The results of FishXing showed that the potential passing rate of large size largemouth bass (>40 cm) through the waterway tunnel was greater than 10%; however, the passage of largemouth bass was not possible because of the mesh size ($3.4{\times}6.0cm$) of the pre-screening structures at the entrance of the waterway tunnel. Overall, this study suggests that the spread of largemouth bass population in the Imha Reservoir through the waterway tunnel is most likely impossible.

• 대한토목학회논문집
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• 제33권6호
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• pp.2303-2315
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• 2013

일반적으로 도수로는 급경사 사면에서 발생되는 유출량의 배수를 위하여 설치되는 구조물이며, 이러한 도수로에서의 월류 및 유수 이탈을 방지하기 위하여 소단부에 도수로 덮개를 설치하고 있다. 본 연구에서는 비탈면의 배수에 중요한 구조물이 도수로에서의 흐름특성 및 구체적인 설계기준을 제시하기 위하여 수리실험 연구를 수행하였다. 도수로에서의 흐름특성을 분석하기 위하여 도수로의 경사와 소단 길이의 변화가 가능한 수리실험 수로를 제작하고, 유입 유량을 변화시켜가면서 수리실험을 실시하였다. 도수로의 경사는 $40^{\circ}$, $50^{\circ}$, $60^{\circ}$, $70^{\circ}$로 변경하였으며, 실험유량의 범위는 1.0~5.6 ${\ell}/s$로 선정하였다. 수리실험 결과 도수로 내로 유하되는 유량에 따라 소단 내 흐름은 도수 흐름과 튐으로 구분되었으며, 도수로 경사에 따라 1.1~2.0 ${\ell}/s$ 이하의 유량이 유하될 경우의 튐 흐름은 소단의 상부와 하부에서 각각 유수이탈을 발생시키는 원인으로 판단된다. 또한 도수로 내의 물입자 비산거리는 도수로 경사 변화를 고려하여 실측한 결과 소단 시작점으로부터 약 20 cm(1.3B)지점부터 시작되었으며, 하부 도수로의 경사변화에 따라 실측된 유수이탈 거리는 소단하부로부터 3.5B지점까지 나타났다. 따라서 소단시작지점으로부터 1B지점에서 소단하부로부터 3.5B 지점까지 도수로 덮개를 설치하여야 유수이탈 없이 유수를 유하 시킬 수 있는 것으로 판단된다.

• 한국환경복원기술학회지
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• 제7권5호
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• pp.57-65
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• 2004

This study was carried out to measure the growth and photosynthesis of Iris pseudoacorus, the reduction rate of nitrogen(T-N) and phosphoric acid($P_2O_5$) from soils, and the increase rate of two substance into plants which cultivated at waterway soils of different concentration of two substance. The results are summarized as follows; 1. The contents of nitrogen and phosphoric acid at waterway soils of Mangyeong river showed the highest level in the around Samrye railway bridge where was located in the downstream and sewage of stock raising flowed in 2. The Iris pseudoacorus which cultivated at waterway soils showed the leaf and root growth of 43~50 and 9~13cm, respectively. And the growth was higher in the waterway soils contained high level of nitrogen The rate of photosynthesis was $3.5-5.9{\mu}mol\;m^{-2}s^{-1}$ ranges and this rate increased from the end of June to August and then decreased. The rate of photosynthesis was higher in waterway soils contained high nitrogen regardless of seasons. 4. The Iris pseudoacorus removed nitrogen and phosphoric acid from waterway soils about 19~21% and 13~15%, respectively. The Iris pseudoacorus was effective to remove nitrogen more than phosphoric acid. And the waterway soil which included high concentration of two substance showed highly removal 5. The results of Iris pseudoacorus vegetation in the waterway soils showed that nitrogen and phosphoric acid of inside plant increased with 0.2-1.0% and 0.01-0.10% ranges, respectively. The contents of nitrogen and phosphoric acid in plants were increase in the soils of higher contents of nitrogen and phosphoric acid, and the rate of increase of nitrogen and phosphoric acid was higher at roots than leaves.

• 한국농촌건축학회논문집
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• 제17권2호
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• pp.27-34
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• 2015

As part of the waterway restoration to renew traditional urban area, this paper is to assume and research Gyoseocheon(Gyoseo waterway) in Late 1960s Cheongju Korea. The main stream of Gyoseocheon flew from Sangjwagol(the head of the valley) of Uam Mt. to the north gate under Cheongju castle at first, and meandering from Sangdang Park, flew through Sudongseongdang and Bangadari Road to Musimcheon since open railroad of 1920s. This waterway, the eco-friendly figure of Gyoseocheon, that flew to inside the downtown with a planted tree and that is open space was so. The sub stream of Gyoseocheon originated in Seoundong and Tapdong were divided into two parts. One was to join the main stream of Gyoseocheon on Sangdang Park via Munhwadong, and the other was to join the sub stream of Musimcheon at northwest corner via south and west gate of Cheongju castle. This waterway as branch sewer were built into the road culvert.

• 지질공학
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• 제33권3호
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• pp.461-474
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• 2023

본 연구에서는 경상북도 청송군 현서면과 안덕면 일원에 설치되어 있는 영천댐 도수터널 구간과 도수터널 주변지역의 지하수위를 측정하여, 도수터널 시공 이전 대비 지하수위 회복여부를 조사하였다. 2017년 9월부터 2018년 8월까지 매월 1회 이상 총 12회에 걸쳐 지하수 관정 156공에 대한 지하수위를 측정하였으며 지하수위 관측조사 결과, 직접 영향구역에 분포하는 관정의 지하수위 값이 간접 영향구역의 값에 비하여 상대적으로 낮은 수치를 보이고 있다. 이러한 결과는 지형조건보다는 지질학적 불연속면으로 작용하는 도수터널에 의한 영향, 즉 지하수 흐름이 직간접적인 경로를 통하여 도수터널로 유출되는 것에 지배적으로 영향을 받는 것으로 추정되며, 향후 지하수 시설물의 유지관리 및 지하수 환경의 보전을 위하여 지속적인 모니터링 및 추가 조사가 필요하다.

• 한국주거학회논문집
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• 제10권2호
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• pp.213-222
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• 1999

This study, from conditions connected with water in Feng-Shui theory, is to find out their influence of the location and spatial composition of the studied villages, Hawei and Yangdong, and then to offer the result as basic data for the study of the traditional village in the future. The study method is to analyze topography by the map and present state of villages studied, to interprete them on the base of location, spatial composition, and chi, and then to analyze the relevancy of Feng-Shui theory of them. The result of the study are to be following: Houses of Hawei village are situated on the inside of a winding stream of waterway, while those of Yang dong village are located on the outside of a winding stream of waterway. In case of Hawei village, showed the close interrelation between the distribution of present houses and running speed of waterway by positin. Judging from the location, orientation and surroundings of mountains and waterway, topographical composition of Hawei village is Duk su guk, but that of Yang dong village is Juang feng guk. Comparing with Yang dong and Hawei in location and spatial composition, the conditions of waterway as being locational factor, for example, the geomancy of situation, orientation, and phisical phenomena(lenth, width, and depth of waterway in front of village) of waterway, are more importantly considered in Hawei village being situated on even land than in Yang dong located at the foot of the mountain.

• 한국방재안전학회논문집
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• 제14권2호
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• pp.25-33
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• 2021

본 기술은 기존의 빗물받이 및 도시형수로 시스템의 대체 가능한 기술로서 적용시 빗물은 빠르게 투수됨으로써 도시홍수를 저감할 수 있는 기술이다. 강우시 인도 방향의 제1 수로 공간으로 유입되는 빗물은 담배꽁초 등의 쓰레기는 유입되지 않고, 채움재를 통해 미세먼지 등의 오염물질을 감소시킨 후 지하로 투수시킬 수 있다. 제2 수로 공간으로 유입되는 빗물은 유속을 떨어뜨려 임시로 저류하였다가 배수관으로 배수시킴으로써, 배수관에서의 병목현상을 방지할 수 있는 도시형 수로 시스템 및 이의 시공방법에 관한 것으로 이를 통해 도시홍수 및 미세먼지 저감에 기여할 수 있을 것이다.

• 한국산림과학회지
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• 제94권1호통권158호
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• pp.1-5
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• 2005

질소와 인의 농도가 다른 만경강 하천토양에 친수성 목본식물인 갯버들을 재배하여 식물체의 생장량과 광합성, 그리고 토양내의 질소와 유효인산$(P_2O_5)$의 함량변화 등을 조사하였다. 만경강 하천토양 내 질소와 유효인산의 함량은 비교적 하류에 위치하면서 일부 축산오수가 유입되고 있는 삼례철교 부근의 하천토양에서 가장 높았다. 하천토양에서 재배된 갯버들은 줄기의 길이생장이 가장 왕성(170-215%)하였고, 다음으로 직경생장이 양호(42.3-79.3%)하였다. 전반적으로 질소의 함량이 높은 하천토양일수록 갯버들의 생장이 더 왕성하였다. 식물체의 광합성량은 질소의 함량이 많은 토양에서 약간 높았고, 8월에 최대치를 나타내었다. 갯버들을 재배함으로써 하천토양에서 질소는 14-15% 정도 제거되었고, 유효인산은 9-11% 정도 제거되었다. 갯버들은 인보다는 질소의 제거에 더 효과적이었으며, 질소와 인산 모두 농도가 높은 토양에서 제거율도 높은 경향을 나타내었다.

• 한국항해항만학회지
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• 제33권9호
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• pp.615-621
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• 2009

Road and maritime transport which connecting main cities in the world is already fully saturated, and the loss cost caused by recent high oil prices is getting bigger. Transportation by inland waterway is rising as an alternative method of them. Concerning this, the GI Waterway is on construction to connect the Yellow sea and Seoul. Nevertheless, there are no existing aids to navigation around the area and no studies have been carried out for them. As the construction progresses, installation of proper aids to navigation should be considered and profound studies need to be carried out. This study focused on introduction of the cases and the systems of other countries inland waterway aids to navigation and suggested a suitable navigation aids system along the inland waterways in Korea and a way of installation for that system.

• 한국농공학회지
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• 제8권1호
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• pp.1071-1076
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• 1966

In this country grassed waterway practice has long been employed for the protection of drainage or diversion ditches in treating the sloped forest lands. However, the hydraulic characteristics of flow in the ditches have been entirely away from consideration in determining the dimensions of the ditches. This paper is intended first to bring forth some problems which should be brought ioto Consideration in designing grassed waterway including hydrologic aspect for determining the drainage requirement, erosion resistance of various grasses and other factors related to the hydraulics of ditch and second to introduce to readers a method of grassed waterway design, though modified, proposed for U. S. Soil Conservation Service practice. The method presented in the paper was primarily based upon the data originated from the experiments of U. S. Soil Conservation Service laboratories and further investigations on the factors involved are hoped to be conducted for applying the design criteria in this country. It is recommended to use the method of grassed waterway design ,presented in this paper from the view point of wide employment of grass lining on ditches which is obtainable at the lower cost and in abundance every where in this country.