Searched for: department%3A%22Water%255C+Management%22
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Shao, W. (author), Bogaard, T.A. (author), Bakker, M. (author), Greco, R. (author)
The effect of preferential flow on the stability of landslides is studied through numerical simulation of two types of rainfall events on a hypothetical hillslope. A model is developed that consists of two parts. The first part is a model for combined saturated/unsaturated subsurface flow and is used to compute the spatial and temporal water...
journal article 2015
document
Bakker, M. (author), Caljé, R. (author), Schaars, F. (author), Van der Made, K.J. (author), De Haas, S. (author)
A new approach is developed to insert fiber optic cables vertically into the ground with direct push equipment. Groundwater temperatures may be measured along the cables with high spatial and temporal resolution using a Distributed Temperature Sensing system. The cables may be inserted up to depths of tens of meters in unconsolidated sedimentary...
journal article 2015
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Shao, W. (author), Bogaard, T.A. (author), Bakker, M. (author), Su, Y. (author), Berti, M. (author)
journal article 2015
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Shao, W. (author), Su, Y. (author), Bogaard, T.A. (author), Bakker, M. (author), Savenije, H.H.G. (author)
journal article 2015
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Morgan, L.K. (author), Bakker, M. (author), Werner, A.D. (author)
A number of numerical modeling studies of transient sea level rise (SLR) and seawater intrusion (SI) in flux-controlled aquifer systems have reported an overshoot phenomenon, whereby the freshwater-saltwater interface temporarily extends further inland than the eventual steady state position. Recently, physical sand-tank modeling has shown...
journal article 2015
document
Shao, W. (author), Bogaard, T.A. (author), Bakker, M. (author), Greco, R. (author)
The effect of preferential flow on the stability of landslides is studied through numerical simulation of two types of rainfall events on a hypothetical hillslope. A model is developed that consists of two parts. The first part is a model for combined saturated/unsaturated subsurface flow and is used to compute the spatial and temporal water...
journal article 2014
document
Bakker, M. (author)
Water demand forecasting The total water demand in an area is the sum of the water demands of all individual domestic and industrial consumers in that area. These consumers behave in repetitive daily, weekly and annual patterns, and the same repetitive patterns can be observed in the drinking water demand. The observations of the water demand...
doctoral thesis 2014
document
Bakker, M. (author)
The Dupuit solution for interface flow toward the coast in a confined aquifer is compared to a new exact solution, which is obtained with the Hodograph method and conformal mapping. The position of the toe of the interface is a function of two dimensionless parameters: the ratio of the hydraulic gradient upstream of the interface where flow is...
journal article 2014
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Bakker, M. (author), Rajewicz, T. (author), Kien, H. (author), Vreeburg, J.H.G. (author), Rietveld, L.C. (author)
Conventional automatic production flow control and pump pressure control of water supply systems are robust and simple: production flow is controlled based on the level in the clear water reservoir and pump pressure is controlled on a static set-point. Recently, more advanced computer-based control methods were developed in which production flow...
journal article 2014
document
Shao, W. (author), Bogaard, T.A. (author), Bakker, M. (author)
Preferential flow paths, such as cracks, macropores, fissures, pipes etc. are common features of highly heterogeneous slopes. During intense rainstorms, preferential flow has a significant influence on subsurface flow and slope stability. Dual-permeability models are widely used to simulate preferential flow, but have not been incorporated into...
journal article 2014
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Bakker, M. (author), Bartholomeus, R.P. (author), Ferré, T.P.A. (author)
journal article 2013
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Van der Spek, J.E. (author), Bogaard, T.A. (author), Bakker, M. (author)
Groundwater dynamics may play a significant role in landslides. A detailed model is developed of the groundwater dynamics in landslides in varved clays in the Trieves area in the French Alps. The varved clays consist of a sequence of alternating silt and clay layers, covered by a colluvium layer and intersected by fissures. The hydraulic...
journal article 2013
document
Bakker, M. (author), Rajewicz, T. (author), Kien, H. (author), Vreeburg, J.H.G. (author), Rietveld, L.C. (author)
WTP Gruszczyn supplies drinking water to a part of the city of Pozna?, in the Midwest of Poland. The conventional production flow control and pressure control of the facility was replaced by the advanced control software called OPIR. To assess the differences between conventional and advanced control, production flows and pressures of two...
conference paper 2013
document
Bakker, M. (author), Rajewicz, T. (author), Kien, H. (author), Vreeburg, J.H.G. (author), Rietveld, L.C. (author)
WTP Gruszczyn supplies drinking water to a part of the city of Pozna?, in the Midwest of Poland. For the optimal automatic pressure control of the clear water pumping station, nine pressure measuring points were installed in the distribution network, and an active pressure control model was developed and installed. This model is a hybrid form of...
conference paper 2013
document
Bakker, M. (author)
Het drinkwater wordt vanaf de waterzuiveringen naar de onze huizen en bedrijven verpompt via de distributie netwerken. Deze netwerken zijn zeer uitgebreide systemen: naast elke straat en naast veel wegen en door veel weilanden liggen leidingen waardoor het water stroomt. De leeftijd van deze leidingen is divers: in jonge steden of in nieuwe...
conference paper 2013
document
Van der Spek, J.E. (author), Bogaard, T.A. (author), Bakker, M. (author)
Groundwater dynamics may play a significant role in landslides. A detailed model is developed of the groundwater dynamics in landslides in varved clays in the Trièves area in the French Alps. The varved clays consist of a sequence of alternating silt and clay layers, covered by a colluvium layer and cut through by fissures. The hydraulic...
journal article 2013
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Bakker, M. (author), Vreeburg, J.H.G. (author), Rietveld, L.C. (author), Blom, T. (author), Van der Roer, M. (author)
conference paper 2012
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Bakker, M. (author), Vreeburg, J.H.G. (author), Van der Roer, M. (author), Sperber, V. (author)
An algorithm which compares measured and predicted water demands to detect pipe bursts was developed and tested on three data sets of water demand and reported pipe bursts of three years. The algorithm proved to be able to detect bursts where the water loss exceeds 30% of the average water demand in the area. The accuracy depends on the...
conference paper 2012
document
Bakker, M. (author), Lapikas, T. (author), Tangena, B.H. (author), Vreeburg, J.H.G. (author)
Water supply systems are vulnerable to damage caused by unintended or intended human actions, or due to aging of the system. In order to minimize the damages and the inconvenience for the customers, a software tool was developed to detect anomalies at an early stage, and to support the responsible staff in taking the right decisions to restore...
conference paper 2012
document
Bakker, M. (author), Vreeburg, J.H.G. (author), Rietveld, L.C. (author), van der Roer, M. (author)
An method which compares measured and predicted water demands to detect anomalies, was developed and tested on three data sets of water demand of three years in which and 25 pipe bursts were reported. The method proved to be able to detect bursts where the water loss exceeds 30% of the average water demand in the area. By simultaneously running...
conference paper 2012
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