1. IMPACT ~ Breach Formation (WP2)
Overview
(4th IMPACT WS)

2. Breach Formation The Problem to be Solved - AIMS
Problem to solve:
The reliable prediction of breach formation (and hence potential:
flood hydrograph / flood risk
breach size
Approach to identifying potential breach location

3. Breach Formation The Approach
The overall approach entails combining large scale field work, lab work and numerical model development / application.
Field Modelling
Lab Modelling
Numerical Modelling
5-6m embankments
1:10 scale embankments
Multi-partner
Multi-model
Desk / Data Analysis for Breach Location

4. Breach Formation Work Programme
Year 1:
2 x 6m field tests in Norway
9 x 0.6m lab tests at Wallingford
Widen numerical modelling team and integrate modelling programme with field and lab

5. 10:25

6. 11:27

7. 12:23

8. 13:05

9. Breach Formation Work Programme
Year 2:
3 x 6m field tests in Norway
13 x 0.6m lab tests at Wallingford
Numerical modelling integrates with field and lab modelling
Initiate breach location work (factors and methodology)

10. Breach Formation Work Programme
Year 3:
Finalising numerical modelling comparisons
Breach location (factors and methodology)
Application to combined risk assessment / uncertainty

11. Breach Formation Direction of work:
Analysis of this data permits:
Consideration of scaling differences between field and lab data
Comparison of controlled test results against observed field data
Objective performance assessment of multiple numerical models predicting breach formation
Base data for validation and model development

12. Breach Formation Deliverables (Overview)
Field and lab data on breach formation
different geometries & materials
Comparison and development of breach models
various partner models
model interface for direct comparison
commercial products
Approach for identifying potential breach location