Start
date or starting event: Project start date
Lead
contractor number: 4 - University of Padova
Person-months
per partner: 1-2; 2-2; 3-0; 4-74; 5-3; 6-0
Objectives
and input to workpackage
-
Data
collection on debris flow characteristics for model development.
-
Development
of a 1-D user-friendly model for debris flow propagation and
impact (in terms of hazard on the fan).
-
Application
of model to small basin (<10km2) in focus area
C; design of torrent control works and planning of land use
in the fan area.
Description
of work
-
Measurements
of debris flow characteristics (volume of material mobilized,
runout distances, etc) in experimental and instrumented basins.
Acquisition and analysis of a) precipitation and water discharge
data, and b) existing thematic maps (land use, geology, etc).
-
Development
of the model using a Muskingum-Cunge approach modified to account
for the flow rheology, the ratio of flow depth and sediment
diameter at the debris flow front and relationships from WP1.
Innovative integration of the propagation model and a fan DTM.
The fan area will be pre-processed to extract a potential hydrographic
net and to estimate the degree of connection with the critical
(low conveyance) cross section of the main stem. For each critical
section (e.g. at bridges, bends, etc) the hazard is defined
by a thematic DTM window. Development of user-friendly graphics
and data input-output.
-
Creation
of debris flow data base for a small basin in focus area C.
Detailed survey of channel reaches (critical sections) and fan
areas and creation of detailed fan DTM. Integration of data
(including thematic maps) into a GIS system. Validation of model.
Deliverables
D6)
Comprehensive database on debris flow characteristics and impacts
in small basins, as input to WP5.
D7)
Simple 1-D debris flow impact model integrated with a GIS, for use
alone or as part of WP2.
Milestones
and expected result
Month
18: Preliminary impact model for WP2.
Month
24: Final impact model for WP2.
Month
30: Application to design of impact mitigation measures for WP5.
Result:
Innovative user-friendly model for
use by end-users in assessing debris flow impact and effect of mitigation
measures.
