Stability of rock-based emergency measures based on the Grave Weir calamity

On the 29th of December 2016 a large Rhine ship loaded with 2000 ton benzene sailed through the weir at Grave, located in the river Meuse in the Netherlands. The accident created a large gap in the weir and within 12 hours the upstream water level decreased by a maximum of 3 meters. Due to this decreased water level shipping was limited,...

Grass revetment reinforcements: A study into the effectiveness of measures applied during critical conditions.

Reinforcement measures are applied by water boards during critical conditions in an ultimate attempt to prevent flooding. However, the effect of these measures on the reduction in flood risk or failure probability of the flood defence is often unknown. This research focusses on the effectiveness of grass revetment reinforcement measures applied...

Emergency closure of dike breaches: The effect and applicability of emergency measures

Floods cause, even in modern countries, a lot of victims and damage every year. Generally, countries invest in prevention and protection, yet, also emergency response measures could be a (last) option. Regarding the latter, a distinction is made between preventive emergency measures (e.g. sand bags to raise the crest level of a flood defence)...

Effectiveness and reliability analysis of emergency measures for flood prevention

During flood events emergency measures are used to prevent breaches in flood defences. However, there is still limited insight in their reliability and effectiveness. The objective of this paper is to develop a method to determine the reliability and effectiveness of emergency measures for flood defences. The investigation is focused on measures...

Effectiveness and reliability of emergency measures for flood prevention

Floods in the summer of 2013 in Central Europe demonstrated once again that floods account for a large part of damage and loss of life caused by natural disasters. During flood threats emergency measures, such as sand bags and big bags, are often applied to strengthen the flood defences and attempt to prevent breaches. Although these measures...

Advances in reliability analysis of the piping failure mechanism of flood defences in the Netherlands

Piping is one of the main failure mechanisms for flood defences. This paper gives an overview of recent developments in the reliability analysis for this mechanism in the Netherlands. These comprise new approaches in the treatment of heterogeneity of the subsoil with respect to the failure process, the inclusion of information from field...

Delevering benefits through evidence: Temporary and demountable flood protection guide

The research found that in the large majority of situations where temporary and demountable systems have been used, they have provided adequate protection. There have been some occasions however where operational processes or inaccurate hydraulic assessments has led to a failure of the systems. These failings highlighted the importance of...

Haalbaarheidsstudie naar de toepassing van een worst als tijdelijke waterkering

Het rapport 'Haalbaarheidsstudie naar de toepassing van een worst als tijdelijke waterkering' gaat na of een worst als nooddijk een technisch en/of economisch haalbaar alternatief is voor huidig gebruikte methoden voor tijdelijke waterkeringen. Op dit moment wordt bij dreigend hoogwater op verschillende manieren een nooddijk gebouwd. Men kiest...