Concept

Dam

Related publications (156)

Talsperren und Speicher als lebenswichtige Infrastrukturanlagen für den weltweiten Wohlstand = Dams and Reservoirs as Vital Water Infrastructures Ensuring Worldwide Economic Prosperity

History shows that the economic prosperity of a society and its cultural wealth was always closely related to the level of the development of the hydraulic schemes, including dams and reservoirs. In view of climate change, dams and reservoirs will and have ...

2016

New hydraulic gallery to improve operation conditions at the Emosson hydro scheme

Azin Amini, Nima Nilipour

A new hydraulic gallery was constructed to increase operational resilience and mitigate risks of Emosson hydropower scheme in the Swiss-French Alps. One of the main constraints of the operation is to avoid the overflow of the so called "Corbes" surge chimn ...

2016

Mobile Riverbed Scour Downstream of a Piano Key Weir

Anton Schleiss, Michael Pfister, Stefan Jüstrich

In parallel to their most frequent application as an auxiliary dam spillway, piano key weirs (PKWs) are also installed on low-head barrages in combination with run-off-the-river power plants. Their efficient rating curve, advantageous behavior under driftw ...

Asce-Amer Soc Civil Engineers2016

Replenishment of sediment downstream of dams: Erosion and transport processes

Elena Battisacco

Large dams in Alpine valleys retain most of the sediments, especially coarse material, which is deposited in the delta of the reservoirs. The common sediment evacuation measures allow to flush only the fine sediments for example by turbidity current ventin ...

EPFL-LCH2016

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Elena Battisacco

Dams trap sediment in the upstream reservoir, which may lead to river bed armoring, streambank erosion and failure, channel incision and reduction of the morphological diversity in the downstream river reaches. The replenishment of sediment is a mitigation ...

American Geophysical Union2016

Piano Key Weir for Enlargement of the West Fork of Eno River Reservoir

Michael Pfister

The West Fork of Eno River Reservoir Dam is located near Hillsborough, North Carolina, USA. The earthen embankment dam provides an impoundment used by the town for water supply. The project was originally completed in 2000 with forethought by the owner for ...

2016

The influence of the opening width of check dams on bedload continuity of mountain rivers

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt

The design of open check dams at mountain rivers for flood protection has an essential impact on the sediment budget of downstream river reaches. A key issue is the bedload transfer hindering and retention which can be influenced by the geometry of the ope ...

2016

Experimental study on the influence of abrupt slope changes on flow characteristics over stepped spillways

Mohammad Javad Ostad Mirza

Application of stepped spillways increases the energy dissipation rate along the spillway and may reduce the dimensions of the terminal energy dissipation structure. This pronounced energy dissipation makes stepped chutes attractive under various condition ...

EPFL2016

Head loss coefficient through sharp-edged orifices

Anton Schleiss, Giovanni De Cesare, Nicolas Jean François Pascal Ghislain Adam

Nowadays, high-head power plants could increase their installed power capacity for many reasons, e.g. dam heightening, increase of their peak power capacity or refurbishment with new turbines. Frequently, due to several considerations, e.g. topographical o ...

2016

Experimental study on the influence of abrupt slope changes on flow characteristics over stepped spillways

Mohammad Javad Ostad Mirza

Stepped spillways have been built since several decades in combination with roller compacted concrete dams. More recently stepped spillways are also excavated into rock along the abutments of embankment dams. According to the prevailing topography these st ...

EPFL-LCH2016

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