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The Observational Method? : control risk, exploit opportunities!
A study was conducted of the Observational Method with the aim of furthering the more widespread use of the method in the design of underground and infrastructure construction. A guideline now provides an overview of obstacles and pre-conditions, practical recommendations about how to produce a safe design, and practical recommendations about how to organise the implementation of the method during construction.
The link between river hydraulics and vegetation patchiness
Vegetation plays a fundamental role in shaping streams and rivers due to its e§ects on morphodynamic processes, particularly in small streams, where vegetation can lead to significant changes in the bed morphology of the main stream by a§ecting erosion and deposition processes. In a joint project with the Korean River Experiment Centre in Andong (which is part of the Korean Institute of Civil Engineering and Building Technology) we measured the properties of vegetated flows in a unique large-scale outdoor flume facility with real, rooted vegetation and natural sediments.
The conjunction of storm surges and high discharges
The conjunction of storm surges and high discharges in the IJsselmeer lake was explored on the basis of historical and statistical analysis. Given the increasing need for a better understanding of interactions between the various processes that contribute to high lake levels, the study provides crucial information for probabilistic analyses of flood risk and flood risk management for the IJsselmeer lake.
Testing of ancient block revetment in the new Delta Flume
The first project in the new Delta Flume studied the stability of an ancient block revetment made of boulders and concrete. The revetment was tested on an almost prototype scale, resulting in the conclusion that the stability of the revetment on the dike Eemshaven - Delfzijl was more than adequate.
Sustainable and green urban development in Utrecht
We provided the City of Utrecht and Jaarbeurs with assistance for the development of plans for a green, comfortable, attractive and climate-resilient Centre-West area. Adaptation assignments for flooding, for drought and for heat stress reduction were quantified and three blue-green adaptation plans were co-created; effectiveness and the potential benefits for all local stakeholders were assessed.
Storm impacts on gravel beaches
Deltares, in collaboration with Plymouth University, has developed a numerical model to predict the impact of storms on gravel coasts. The model was developed and verified using unique measurements of storm processes on five beaches in the UK. The model shows significant improvement by comparison with existing empirical models.
Spatial Catchment Modelling : from catchment to coast
The WFlow software, which is part of the Deltares OpenStreams project, is a distributed hydrological modelling platform. The Python-based, distributed, hydrological modelling platform software is now available as a plugin for the Delta Shell framework. Users can import, inspect and run existing WFlow models with its GUI. Coupling to other plugins is planned from 2016 onwards.
Smart Water Management on a regional scale
A Flood Early Warning system for three regional water systems intersected by a canal system. The FEWS makes fifty ensemble forecasts four times a day and simulates flood extents in high detail. An optimisation model advises on the best use of flood-prevention measures.
Shared tools for designing coastal infrastructure
Coastal Design Support (CoDeS) tools are relatively simple software tools developed to help engineers with the design of coastal engineering solutions and communications with clients and stakeholders. The tools provide a quick picture of the orders of magnitude of environmental conditions and impacts, and help to arrive at promising solution concepts in the early stages of a project.
River bed erodibility in the Port of Rotterdam
A three dimensional model of the subsurface of the Nieuwe Waterweg in the Port of Rotterdam in the Netherlands was developed to study the effects of the deepening of the access channel. The model was constructed using data from boreholes, CPTs and seismic lines.