1D, 2D integrated Flood Risk Mapping (Incheon-gyo Catchment)

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1D, 2D integrated Flood Risk Mapping
(Incheon-gyo Catchment)

• 2007. 8. 20

Team RED Seongjoon BYEON Myeongsoo
HAM Michele ROMANO K. Shobha
YADAV Masahiko TERAZONO ADVISER Gyewoon CHOI
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CONTENTS

• HYDROASIA TEAM-RED
• INTRODUCTION
• OBJECTIVES OF STUDY
• PRE-PROCESSING WITH GIS
• URBAN DRAINAGE MODEL SETUP
• MIKEFLOOD MODEL SETUP
• ANALYZING RESULTS
• CONCLUSION
• FURTHER PLAN

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HYDROASIA TEAM-RED
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HYDROASIA TEAM-RED

• Leader Seongjoon Byeon
• Nationality Korea
• The date of Birth December 13, 1979 (Age 27)
• University Incheon Regional Environmental
  Technology Development Center, National
  University of Incheon, University Nice
  Sophia-Antipolis
• Major Civil Environment Hydraulics

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HYDROASIA TEAM-RED

• Member Myeongsoo Ham
• Nationality Korea
• The date of Birth August 15, 1981 (Age 25)
• University Incheon Regional Environmental
  Technology Development Center, National
  University of Incheon
• Major Civil Environment Hydraulics

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HYDROASIA TEAM-RED

• Member Shobha Kumari Yadav
• Nationality Nepal
• The date of Birth August 20, 1980 (Age 26)
• University Tropical Marine Science Institute,
  National University of Singapore
• Major Environmental Management

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HYDROASIA TEAM-RED

• Member Michele Romano
• Nationality Italy
• The date of Birth February 11, 1978 (Age 29)
• University Tropical Marine Science Institute,
  National University of Singapore, Technical
  University of Bari
• Major Civil Environmental

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HYDROASIA TEAM-RED

• Member Masahiko Terazono
• Nationality Japan
• The date of Birth September 28, 1983 (Age 23)
• University Kyoto University
• Major Civil Environmental

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HYDROASIA TEAM-RED

• Adviser Gye woon Choi
• Nationality Korea
• Professor of National University of Incheon
• Executive director of Incheon Regional
  Environmental Technology Development Center

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OBJECTIVES OF STUDY

• Main purpose
• Runoff analysis based on rainfall data and DEM
• Mapping Flood Risk
• Comparison with Real Flood
• Comparison with results simulated with different
  parameters and model
• To find out optimized Storm Performance

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OBJECTIVES OF STUDY

• Making good experiences
• Collaborating on a study with foreign students
  using the internet as a common working and
  communication platform
• Sharing knowledge and skills
• Experiencing the Technological Culture for a
  sustainable water management

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UPLOADING THE PLATFORM

• Production of Weekly Reports
• Production of Documents
• and easy tutorials

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Flow chart Overall frame work

• Overall frame work

MIKE FLOOD
Set up
PreparationGIS
Coupling
Rainfall Analysis
Preprocessing for MOUSE
Run Model
Check the result and evaluation
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INTRODUCTION

• Incheon city
• Area 1002.07?
• Population 2,686,022 persons
• Density of population 2,680 persons/?
• Location
• A gateway to Northeast Asia with both
  international port and international airport in
  its hand
• Incheon is located in the mid-west Korea
  peninsula abutting the Yellow Sea.
• A city located 28km from the nations capital,
  Seoul, lies at 126 37 of east longitude and 37
  28 of north latitude.
• San Francisco, Washington, Madrid, and Teheran
  are found on the same latitude.

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INTRODUCTION

• Incheon-gyo Catchment

• Area 3,091.7 ha
• Elevation 5.424.0 m (EL)
• 33.1 of area is less than 7m (EL)
• Avg. of Slope 0.01
• Avg. of Rainfall 1,702.3 mm/year
• Landuse Residence, Market, Industrial
• and Green (Hill, Agriculture)

Location Location Residence Market Industrial Green Total
Incheon gyo Covered Openchannel Left 743.3 145.9 226.3 77.1 1,183.6
Incheon gyo Covered Openchannel Right 364.8 47.8 353.3 231.3 997.2
Seoknam Canal Seoknam Canal 204.4 38.4 357.9 310.2 910.9
Total Total 1303.5 232.1 937.5 618.6 3,091.7
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PRE-PROCESSING WITH GIS

• A GIS is a computer system capable of capturing,
  storing, analyzing, and displaying geographically
  referenced information
• GIS can display the Earth in realistic, 3D
  perspective views animations that convey
  information more effectively
• The main purpose of GIS analysis is to study the
  topographical characteristics of the study area
  which is further used for flood modelling

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PRE-PROCESSING WITH GIS

• Clipping map as catchment shape
• Making Terrain map with interpolation

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PRE-PROCESSING WITH GIS

• Making grid-Raster data set
• Exporting data set as Ascii file

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PRE-PROCESSING WITH GIS (ArcScene)

• 3D representation of building within catchment
  area

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PRE-PROCESSING WITH GIS (ArcScene)

• 3D representation of road network within
  catchment area

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INTRODUCTION-MIKE FLOOD

• MIKE FLOOD
• Hydrodynamic Integrated model with 1D and 2D
• The result of either 1D or 2D model can be
  transferred as input of another model
• 1D Model
• MOUSE For Analyzing Urban Sewage
• MIKE 11 For Analyzing Open Channel Flow
• 2D Model
• MIKE 21 For Analyzing surface complicated
  overflow

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INTRODUCTION-MIKE FLOOD
Surface Runoff
Overflow
Sewage/Rainfall water
Sewage/Rainfall water
Re-inflow after flood
Flow-capacity excess
Rainfall Runoff
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URBAN DRAINAGE MODEL SETUP

• Importing Network system data into MOUSE
• Setting up Urban Drainage model with MOUSE
• Validation

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URBAN DRAINAGE MODEL SETUP

• Import Ascii data-set as bathymetry
• Setting up Urban Bathymetry with MIKE21
• Validation

Option Value
Time Step 1sec Max Cr0.4
Grid Size 10m
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MIKEFLOOD MODEL SETUP

• Setting up MIKE Flood model
• Coupling Link MOUSE Manholes to MIKE21
• Preprocessing for MOUSE Model
• Running Model
• Check the results

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ANALYZING RESULTS
Gajwa-WWTP
Pump Station
Flooded area
Incheon gyo
Juan st.
Ganseok st.
Catchment boundary
Cityhall
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ANALYZING RESULTS

• Comparing the Result
• (Modeled VS Reported)

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ANALYZING RESULTS

• Result Video

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CONCLUSION

• The Simulation has been built through
  web-collaboration of Team-Red
• Model has been run successfully with good looking
  result
• The advantage mapping with 2D surface runoff
  modeling could be found as following
• The terrain characteristic can be considered
• The lag due to the puddle, discontinuity can be
  considered
• The magnification of result can be prevented with
  distribution of flooded water to another manhole
• This study is expected to be continued as
  following further plan

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FURTHER PLAN

• Applying Building layer map
• Investigating the way to apply runoff
  coefficient
• Applying RTC gate and pump
• Discussion of 2D Runoff result
• Discussion of Precipitation Intensity
• Discussion of Solution
• Comparison with results simulated with different
  parameters and model

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• Lets take pride in being
• TEAM RED !!!