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Monitoring and Analysis of the Impact of the Iron Gate 1 HPP Reservoir in the 70.30 m a.s.l.

Monitoring and Analysis of the Impact of the Iron Gate 1 HPP Reservoir in the 70.30 m a.s.l....

Protection of the Town of Stari Kostolac from the Mlava River Floods

Protection of the Town of Stari Kostolac from the Mlava River Floods and of Low-lying Urban Areas...

Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir

Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir...

  • Monitoring and Analysis of the Impact of the Iron Gate 1 HPP Reservoir in the 70.30 m a.s.l.

    Monday, 05 July 2010 15:21
  • Protection of the Town of Stari Kostolac from the Mlava River Floods

    Friday, 02 July 2010 15:14
  • Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir

    Thursday, 01 July 2010 15:49
Projects Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir
Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir PDF Print E-mail
Caving of Canals Running to Pumping Stations in the Riparian Lands of the Iron Gate 1 HPP Reservoir due to Seepage

altClient: Electric Power Industry of Serbia/Iron Gate Hydroelectric Power Plants LLC, Kladovo
Chief Designer: Bojan Stanković, CE
Designers: Milan Radovanović, GE, Vesna Petrović, GE

The slopes and beds of certain sections of the canals running to the drainage system pumping stations had caved-in due to seepage instability, largely caused by:

  • Unfavorable lithologic makeup of the setting;
  • Elevated piezometric head along canal routes, particularly during periods of high river stages; and/or
  • Sub-standard pumping station performance (irregular operation and considerable water level fluctuations in the intake basin).

The seepage instability problem was addressed through:

  • The construction of self-discharging drainage wells and piezometric head reduction along the canals;
  • Rehabilitation of canal slopes to meet design criteria, including additional excavation or backfilling, as appropriate;
  • Adjustment of pumping station operating modes to new conditions.

To date, the seepage-induced caving problem has been eliminated at three pumping stations whose maintenance is managed by the Iron Gate 1 HPP.
Similar project documents have been prepared for five additional pumping stations. For two of these, the closure of unstable canal sections and the construction of a drainage collector had to be considered instead of self-discharging wells.

Construction activities are currently in progress.

 

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