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하천 및 항만에서의 수중구조물의 보수 및 유지관리에 관한 연구
서규우,신병철 동의대학교 산업기술개발연구소 2001 産業技術硏究誌 Vol.15 No.-
The purpose of this study are repair and maintenance management of submerged structures at river and harbor. Watertight concrete construction keeping water in for water retaining structures. For examples, dams, reservoirs and water tanks, water way, water gate, embankment, waste water treatment plants, sewers and pipelines. Watertight concrete construction keeping water out for waterproof facilities. Internally applied protective coatings for additional requirements of water and liquid retaining structures. Concrete erosion due to acidic environment and swelling from sulphate are applied for protective coating as infiltration polymer mortar, ceramic concoat and sika.
유역개발에 따른 도시하천에서의 유출량 및 도달시간 변화에 관한 연구
서규우,배덕효 한국수자원학회 1996 물과 미래(한국수자원학회지) Vol.29 No.3
본 연구에서는 기존의 주택지외곽의 하천 하류부 저지대를 대규모로 개발하여 택지를 조성하는 사업이 진행되고 있는 인천시 부평구 관내의 동수천유역을 대상으로 장차 하류부 전체에 대해 택지개발이 계획되고 있는 점을 고려하여, 이 유역의 개발로 인한 총유출량과 첨두유량 및 첨두도달시간의 변화정도를 도시화단계별, 재현기간별, 강우분포형태별로 살펴보았다. ILLUDAS 모형을 사용하여 유출해석을 하고 도시화단계를 3가지 단계로 나누고 7가지 재현기간에 따라 설계강유량을 Huff의 4분위법으로 분포시켜 유출해석한 결과, 강우분포형별 첨두유량의 크기는 Huff 4 분포, Huff 2 분포, Huff 3 분포, Huff 1 분포형순으로 나타났다. 강우분포형별로 도시화단계 70%를 기준으로 80, 90%에 따른 총유출량의 평균증가율은 3.5, 5.5% 였고, 첨두유량의 평균증가율은 4. 2%, 8.8%로 나타났으며, 첨두도달시간의 감소율은 4.4, 10.1%로 나타났다. 또한 각 재현기간별로는 도시화단계 80, 90%에 의한 총유출량의 평균증가율은 3.0, 5.4%였고, 첨두유량의 평균증가율은 3.9%, 8.0%로 나타났다. The subject research attempts to evaluate the variations of total runoff volume, peak flow, and travel time depending on the urbanhization, return periods and rainfall patterns under the situations that the preparation of a large residential site at the lowland areas of the downstream of Dongsu stream in Bupyung-Gu, Incheon city is progressed and the area will be eventually fully developed. The ILLUDAS model was used for the runoff analyses based on 3 differend steps of urbanization and 4 different types of Huff's quantile according to rainfall patterns is Huff's 4 quantile, Huff's 2 quantile, Huff's 3 quantile and Huff's 1 quantile. Under the 80 and 90 % of urbanization to the 70% of urbanization, the mean increasing ratio of total runoff volume for each case is 3.5 and 5.5 %, that of peak flow is 4.2 and 8.8%, and the mean decreasing ratio of travel time is 4.4 and 10.1%, respectively. The mean increasing ratio of total runoff volume according to the return periods is 3.0 and 5.4%, that of peak flow is 3.9 and 8.0% under the same conditions of urbanization.
서규우,나현우,김남길 동의대학교 산업기술개발연구소 2005 産業技術硏究誌 Vol.19 No.-
It reflects well feature of slope that is characteristic of city river basin of Busan local. Process various hydrological datas and basin details datas which is collected through basin basis data, weather satellite equipment(EMS-DEU) and automatic water level equipment(AWS-DEU) and use as basin input data of ILLUDAS model, SWMM model and HEC-HMS model in order to examine outflow feature of experiment basin and then use in reservoir design of experiment basin through calibration and verification about HEC-HMS model. Inserted design rainfall for 30 years that is design criteria of creek into HEC-HMS model and then calculated design floods according to change aspect of the impermeable rate. Capacity of reservoir was determined on the outflow mass curve. Designed imagination reservoir(volume 54,000m^(3)) at last outlet upper stream of experiment basin, after designing reservoir. It could be confirmed that the peak flow was reduced resulting from examining outflow aspect. Designing reservoir must decrease outflow of urban areas.
서규우,송일준,이인록 동의대학교 산업기술개발연구소 2005 産業技術硏究誌 Vol.19 No.-
The recent rainfall has happened to exceed the design rainfall after 1990 often, due to the characteristic of the rain to be changed. So, it is falling the ability safety of flood defense equipments to exist. This study analyzed the rainfall of Busan in 2003 since 1961 through the FARD2002(Frequency Analysis of Rainfall Duration). The result is equal to the thing which the design rainfall increased a little since 1991. The change of design rainfall created the result to be a flood discharge increase. This study investigated about the impact to influence on the river bank according to the change of flood discharge, the rainfall pattern change as well. This study used the program of HEC-RAS with HEC-HMS and calculated flood discharge with flood level of river. The result is equal to the thing which the computation became a flood level which exceed 50year(River design criteria-Korea water resources association 2002) criteria with 30year(River establishment criteria-Ministry of construction & transportation 1993), because of an area of impermeability increased of model basin.