초록 ▼

ㅇ 홍수조사 선진화 및 모니터링 기술
- 지상강우를 이용한 레이더보정 방법에 있어 통계적객관분석법(SOA)을 새롭게 적용하였으며, 그 결과를 유출분석을 통하여 그 효용성을 제시
- 수문자료의 품질 및 자료보유현황이 우수한 충주댐 유역을 대상으로 강우 및 유량(수위) 관측소의 적용성 평가를 수행
ㅇ 치수능력증대기술
- 강변저류지의 정량적 홍수조절효과 분석
- 극한강우량 산정 표준화 기술 개발
- 하천 제방과 통문의 인증 표준화 기술 개발
- 치수관련 법, 제도 개선 방안
- 맨홀내의 유사퇴적

ㅇ 홍수조사 선진화 및 모니터링 기술
- 지상강우를 이용한 레이더보정 방법에 있어 통계적객관분석법(SOA)을 새롭게 적용하였으며, 그 결과를 유출분석을 통하여 그 효용성을 제시
- 수문자료의 품질 및 자료보유현황이 우수한 충주댐 유역을 대상으로 강우 및 유량(수위) 관측소의 적용성 평가를 수행
ㅇ 치수능력증대기술
- 강변저류지의 정량적 홍수조절효과 분석
- 극한강우량 산정 표준화 기술 개발
- 하천 제방과 통문의 인증 표준화 기술 개발
- 치수관련 법, 제도 개선 방안
- 맨홀내의 유사퇴적량 저감을 위한 맨홀내부구조 개선안 제안
ㅇ 미래 통합 유역홍수 대응기술
- 실시간 공간홍수예보를 위한 강우-유출-하천의 연계해석을 위해 강우레이더를 위한 강우예측 분포형 수문모형 실시간 하천흐름해석 모형을 개발
- 토양유실에 대한 취약도를 평가하기 위해 강우자료의 전처리 모듈을 개발하여 탑재한 분포형 강우-유사-유출모형을 시범유역의 설측유량 및 유사량과의 비교를 통하여 적용성을 평가
ㅇ 국가 홍수 관리 시스템 개발
- 현황분석 결과를 통한 한국형 AHPS 시스템 프로토타입 설계
- 한계유출량은 설측자료가 존재하지 않는 개념적인 유출량이므로 정확도를 검증하기위해 SCS 유효우량 산정방법을 이용하여 검증

Abstract ▼

ㅇ Advancement of Flood Investigation and Monitoring Technology
Ⅳ. Results
1. Development of Hydrological Survey Advancement Technology
(A) Development of Technology for Upgrading Hydro-Meteorological Data and Radar
In order to secure reliability of radar data produced from domestic rainf

ㅇ Advancement of Flood Investigation and Monitoring Technology
Ⅳ. Results
1. Development of Hydrological Survey Advancement Technology
(A) Development of Technology for Upgrading Hydro-Meteorological Data and Radar
In order to secure reliability of radar data produced from domestic rainfall/weather radar networks, a hydrological quality control technology of radar rainfall data was developed, and the 'Guideline for Quality Control and Hydrological Use of Rainfall Radar Data' was presented. This is to help hands-on workers in the hydrological field who first experience radar, build up basic knowledge about rainfall and weather radar, and reduce trials and errors that might occur, by presenting concepts and processes necessary for using radar rainfall data. Moreover, 'Rainfall Radar Calibration and Data Display System' was constructed and 'Radar Rainfall Data Calibration and Analysis Program' was developed to produce data which can be linked to QPE/QPF/QFF.
Currently, the examination of appropriacy and utilization of hydrological observation technology(instrument) is coming to the fore as an important issue, as hydrological observation technology mixed with advanced technologies in the fields of electricity, electron and machine is developing and it is diversifying. Accordingly, this study suggested the 'Guideline for Advanced Hydrological Observation Technology(Instrument) Investigation and Utilization' regarding the examination of domestic application of the technology and application plans to be used in determining a hydrological observation instrument.
(B) Establishment of hydrological observation system by using new technologies
We developed the representative stream gauge network based on information matrix of entropy by each combination which is assumed by log-normal distribution. The spatial distribution of rainfall stations is quantified by the nearest neighbor index and considered characteristics of installation altitude of raingauge. Since the installation altitude of raingauge and the quantification of the spatial distribution are two different physical parameters, we adopt the Euclidean Distance Method to consider them simultaneously. The suggested method was applied to four rivers basin included Sumjin basin.
2. Development of advanced technique for river (terrain) survey
(A) Advanced river bank & river change survey
We developed a sounding plan to collect water-level data of river and measured it with single-beam echo sounder, side-scan sonar, or R2V2. For the measured data, we made morphological and quantitative comparison using existing cross-leveling and sounding data.
The accuracy of the sounding data was verified by using the same equipment at the same point, and the land and water-level data was integrated in the 3rd year. The operation guideline and manual for advanced river survey was described in consecutive order to facilitate drawing out problems through existing state investigation; selecting items; and using it.
(B) River maintenance technology in connection with national river maintenance data
We studied overseas cases for how to extract structure of water-level boundary and river area using Lidar survey and developed how to extract it.
We complemented, verified, and improved pilot DB for water-level change data. To draw and suggest how to improve river maintenance system in connection with dynamic change of river, we made demand survey and 1-to-1 interviews to listen to opinions of people concerned.
To develop the prototype of water-level change monitoring, we arranged the functions of the prototype; draw functional block diagram; and made storyboard.
3. Flood Control Facility Safety Monitoring Technology
The test-bed application plan of the safety monitoring for flood control facility was established, and for the system stabilization, the flood facility control safety monitoring system like the monitoring information display using sensor node, gateway, monitoring server, and smart application was supplemented and improved. Also, through these improvement and supplementation of the flood control facility monitoring system, the Test-bed for applying the flood control facility safety monitoring in hazardous area was performed.
For establishing the flood hazard warning system technology, the specific method and the basic guideline of the flood control facility safety monitoring were suggested. By applying and improving the monitoring information in the levee DB search system developed in the 4th year, "Smart Levee Information System", the flood control facility monitoring application based on the smart phone was developed.
Also, the flood control facility monitoring service utilizing the wireless sensor network available to monitor in wide area and real-time was developed, and the operation result and warning criterion were suggested.
4. Realtime flood damage monitoring technology development
In this study, automatic teleoperation module was developed. The flood damage data sampling unattended automatic teleoperation system 'iFlood-Roboat' was developed by applying this module. The developed system usability was studied in test-bed.
Existing applications 'iFlood-Terminal' and System 'iFlood-Gateway', newly developed system 'iFlood-Roboat' was combined, and built the flood damage real-time monitoring system. And the web site was produced for display the collected data using the system.

ㅇ Enhancement Technology in Flood Defense Capacity
Ⅳ. Result
1. Design and improvement in Technology of Flood Control Structure
The discharge-supply system to generate hydrograph for unsteady flow was developed in order to evaluate the flood-control effect of side-weir detention basin. Using this equipment, HEC-RAS model was verified. Also, when designing the side-weir detention basin, the determination methods of required factors were suggested. In study of designing flood hydroograph, a software named SIDEBA which estimates the design flood hydrographs was developed. In the study of agriculural reservoir, the flood management ability of agriculural reservoir was quantified. And the structural improvement in technigues fr increasing the flood management ability was suggested.
2. Standardization Technology of Nonstationary and Extream Rainfall Analysis
The location and scale parameters of the nonstationary Gumbel and GEV models were assumed as the linear or expoenetial functions of time to develop the nonstationary frequency analysis technique. The parameters of nonstationary Gumbel and GEV models were estimated by using the method of maximum likelihood. The Monte Carlo simulation was performed for the standardization of nonstationary Gumbel and GEV models. In addition, the spatial dependency for the modification of the FORGEX method was developed by reflecting the characteristics of rainfall in Korea. The spatial information of rainfall station was established as the database of extreme rainfall analysis system and these procedures established the foundation of SW (extreme rainfall estimation model, EXREM).
3. Development of Standardization Techniques to Accredit Stream Levees and Drainage Culverts.
Two institutional ideas on accreditation or evaluation project for levees and drainage culverts were suggested. One is a safety evaluation project to determine a priority of repair for levees and drainage culverts, the other is an accreditation project connected with the flood and storm insurance. Safety evaluation criteria and an inspection guide for levees are also suggested. A series of levee model experiments on seepage control with landside toe drains were carried out, which have been seldomly conducted in Korea.
4. Economic Analysis and Evaluatin for Flood control and Establishment of Legal Institutional improvements
(A) Development of Decision Making Model for Basin-wide Flood Mitigation Planning
We propose Systematic procedure for designing optimal alternatives when performing basin-wide flood mitigation planning. And we develop existing method of public facility damage to research into new methods in the process of establishing the optimal alternative. We update base data performing flood damage assessment and basic unit that represent the economic value. Lastly, As a result of visible development performance, we develope Flood control economic analysis program(EAF) based on the MD-FDA. And we maximize the applicability of practice in order to obtain objective and reliable analysis under GIS system.
(B) Legal and Institutional Improvement Plans for Flood Control
A necessity of river integrated basin-based flood control polices was suggested. Through an analysis of the river basin management, urban river management and integrated flood control system both at home and abroad, the introduction of integrated flood control policies-the improvement plans for organizational structure and it related laws and regulations- were suggested.
(C) Development of the shared vision model(SVM) for conflict mediation of flood control
In this study, the stakeholder partipipation system using web-based was developed. And SVM(share vision mdel) for conflict mediation of flood control was developed.
5. Advanced technology for design of urban drainage systems
(A) Flood response technology of drainage system according to the variation of urban environment
The literature review of domestic and international standard design criteria was conducted and the essential techniques were developed for increasing the drain efficient in urban drainage systems such as estimation and application plan of head loss coefficients at the surcharged manhole, analysis of the movements and sedimentation of sediment load and reduction plan of sedimentation deposit, and improvement of drainage facilities on steep slope. The design guideline of urban drainage system was built by using the results drawn from experimental study and was consulted by the professional advisory committee. Consequentially, the design guideline of urban drainage system with focus on the manhole and the design guideline of waterway and drainage well at steep slope are presented.
(B) Optimal Design Technique of Stormwater Network System to Reduce Urban Flood Disaster
- Development of optimal stormsewer design model
- Improvement of optimal stormsewer design model
- Improvement of application in practice for optimal stormsewer design model
6. Evaluation of Discharge Capacity in Urban Drainage System and Increasement Plan
- A terrain construction of composite basin
- A development of algorism and module for composite basin runoff analysis
- A verification of module

ㅇ Integrated Technology for Watershed Flood Defense
Ⅳ. Result
1. Development of optimized technology for watershed flood control
To development the component technologies for integrated flood management, estimation of assessing flood hazard for large river, flood risk assessment, Korean governance model for integrated flood management, urban flood mitigation guideline using non-structural measure were proposed through this study.
To develop evaluation techniques, comprehensive flood response capabilitythe flood mitigation techniques and integrated flood management were proposed
Weir (Operation Weir : Floodgates) safe operating Guidelines, Weir (Operation Weir : Floodgates) flood management and operation instructions, serial weir through each integrated flood management operating guidelines proposed flood control measures.
2. Flood Forecast Technology and Extreme Flood Analysis
To develop rainfall estimation and forecasting technology, the hybrid rainfall algorithm is developed and used to improve the accuracy of rainfall estimation. A semi-Lagrangian backward advection scheme was developed for generating the rainfall nowcasting.
A distributed hydrologic model was developed to apply large basin flood forecast. Hydrologic processes such rainfall, interception, infiltration and flow routing etc. was modeled to get fast computation time and reasonable foecast accuracy. Also utilization of input data information maximized for wide area application distributed rainfall-runoff model development and considering the characteristics of river cross-section model was improved. Speed and accuracy were optimized for improve the applicability of large-scale watershed. Throughout the validation and calibration for actual values optimization of the model was applied.
To analyze extreme flood caused by the failure of hydraulic structure, 1-dimensional high order flow model applying dam breach, river network, and boundary condition treatment was developed. and Numerical Simulation on the target area is implemented by constructed tsunami scenario. Major tsunami scenario are selected with the simulation results and evacuation simulation and educational media are producted. Emergency action plan is established based on basic survey on target area
According to the experimental result of levee breach by various Froude number, discharge into lowland was increased and depth of main channel was decreased when the Froude number was less than or equal to 0.30. But discharge into lowland was decreased and depth of main channel was increased when the Froude number was larger than 0.30.
To construct real-time flood forecasting system for Nakdong river basin, hydraulic model was constructed for main river, and lumped rainfall-runoff model and data-based model was built for caculation of flood inflow from tributary. high order 2 dimensional finite volume model was developed for river flood risk mapping. new production technique of basin Flood Risk Map considering creation, transfer, accumulation by runoff was suggested
3. Channel Stabilization Technology for the Change of Future River Environment
The cell-based distributed rainfall-sediment-runoff program was validated through the application to Miho and Gap river basin and then extended into the integrated basin sediment simulation system based on GUI framework. Parameter estimation was performed by SCE-UA scheme, one of the global optimization, and the distributed rainfall field was generated on the basis of ground rainfall observation. As a main result we could make the distributed soil erosion map and time variant sediment flow into the main channel.
Is applied to SMS a two-dimensional numerical simulation program the data acquired through the repair of groyne model experiment, we verified the validity of this experiment. We investigated the validity Install groyne by selecting the arbitrary section. After selecting the target section, consider the controlling factors in the installation of the groyne and we performing numerical analysis by application for the characteristics of each. through the numerical simulation, we confirming that affect the deposition of each control factor and scouring. Therefore, it is necessary to sufficiently investigate materials for application to the actual river and configure the child manager to suit the terrain conditions.
4. Flood-Risk Index Assessment and Mitigation Planning Techniques Based on River Basin
In this subtitle, it is developed a spatial division technique and its flood risk assessment by using GIS/RS tools. And it also is applied to a pilot study basin for evaluating the flood risk and index, which would be used as a technique of basin-wide flood mitigation planning by considering regional flood damage characteristics.
5. Numerical Modeling of Sedimentation and Desilting in Reservoirs
The numerical modeling was applied to Gum River using the sediment transport formula appropriate for the rivers in Korea. Then, sediment deposition in rivers in Korea was analyzed using numerical modeling of sedimentation and desilting and the efficiency of flushing was assessed by applying numerical analysis on the Xiaolangdi dam in China. The manual presenting the reservoir management techniques for reservoirs was also produced.

ㅇ Development of National Flood Management System
Ⅳ. Result
- Mobile application data upload module development.
- Push alarm service development
- iOS & Android platform application development.
- Tip-off service development
- Related organization SNS information reception & sharing service development
- Connection performance with other project results.
- K-AHPS web & mobile system field example application.
- Direction Design for flash flood forecast system for domestic basin and Data collection
- Limitation of computational method for threshold runoff in FFG system
- Development and Evaluation of computational method for Korean threshold runoff
- Review and Assesment of application radar precipitation forecasting
- Case research of flash flood occurrence and collection channel cross sectional data
- Direction of Design for flash flood forecast system for domestic basin
- Development of real-time estimation of soil moisture
- Forecasting Flow Using Ensemble Streamflow Prediction
- Development of continuous rainfall-runoff model and its application to a large basin application
- Review of data assimilation technique for real-time river flow forecast and development the linking algorithm between the model and data assimilation technique
- Design for real-time operation of the system