Weir Wieblingen

Weir Wieblingen
location
Coordinates	49 ° 24 ′ 39 "  N , 8 ° 40 ′ 5"  E Coordinates: 49 ° 24 ′ 39 "  N , 8 ° 40 ′ 5"  E
Country:	Germany
Place:	69115 Heidelberg
Waters:	Neckar
Water kilometers :	km 23.50
Data
Construction time:	1922-1925
lock
Height upstream :	105.26  m
Average height of fall :	4.26 m
Others
Associated power plant:	Run-of-river power plant 0.8 MW

The Wieblingen weir is a weir on the Neckar near Heidelberg . It is part of the Schwabenheim barrage , as is the Schwabenheim lock at the lower end of the Wieblingen side canal and the Schwabenheim and Wieblingen power plants . It was built between 1922 and 1925 and is a listed building.

location

The weir is the second installation seen from the Rhine . The associated locks and the power plant are located in Schwabenheim . The weir system lies together with the Wieblingen power station at the level of the beginning of the side canal and marks the beginning of the Altneckar .

Building

The locks installed in the six weir fields are used for stowage and have a total height of between 4.30 and 5.90 meters. A weir footpath leads over the weir fields and the side canal as a public footpath. This connects the Heidelberg district of Bergheim with the Neuenheimer Feld belonging to the Neuenheim district .

Construction project

Due to its age, repair work was and is necessary to keep the system - and thus Heidelberg's flood protection within the framework of the natural conditions - functional. In 2006 the basic overhaul of the weir began. As part of the construction work, the first phase involved the renewal of the two right weir fields seen in the direction of the Neckar flow, including the associated drive and control technology. For this purpose, the steel weir locks were replaced, the weir pillars renovated and the associated drive houses rebuilt. Part of the weir footbridge was also replaced.

Before the four other weir fields are completely repaired, the scour is secured in the underwater of the weir system. The reason for the formation and progression of the crater is that the water to be discharged shoots through with high energy under the opened weir seals. Usually a stilling basin (for example in the form of a concrete sleeper) is provided at weir systems in the underwater to destroy this high energy. The Wieblingen weir does not have such a stilling basin. The lack of this stilling basin has the consequence that a considerable deepening in the river bed , a scour, has formed in the underwater of the weir system . Control bearings in the underwater have shown that this scour now has depths of over 8 m compared to the original river bed and is getting deeper and larger and migrates. It is to be expected that a progressive deepening and expansion of this scour will endanger both the stability and thus the operational safety of the weir system and the stability of the separating wall to the Wieblingen side canal.

In order to stabilize the separating wall to the side canal, an embankment with armor stones was carried out along the separating wall in December 2009. However, this security measure is only permanent if, as planned, below, the Kolk with water blocks is filled and fixed. These armourstones are cast with underwater concrete to stabilize them. In addition, sheet pile walls are installed to protect the structures from erosion. Following the securing of the Kolk, the basic repairs to the remaining weir fields will be continued; construction is scheduled to start in 2024 . The construction period is ten to twelve years.

literature

• State Office for Monument Preservation (Hrsg.): Monument topography Federal Republic of Germany, cultural monuments in Baden-Württemberg, city district of Heidelberg . Thorbecke-Verlag 2013, ISBN 978-3-7995-0426-3
• Bernd Walter: Replacement new building weir Wieblingen. Construction of a new weir system with ongoing operations in a sensitive area. In: Technische Universität Dresden, Institute for Hydraulic Engineering and Technical Hydromechanics (Ed.): Complex planning tasks in hydraulic engineering and their solutions. Dresdner Wasserbauliche Mitteilungen 62 (2019), pp. 39–48 ( online ).

Web links

Commons : Weir Wieblingen  - Collection of images, videos and audio files

• Federal Waterways and Shipping Administration, Office for Neckar Development Heidelberg, Weir Wieblingen

Individual evidence

1. ↑ Hydropower on the navigable Neckar . EnBW brochure from June 2011 on the company's website, PDF, 574 kB, accessed on May 25, 2014.

Upstream	Crossing the Neckar	Downstream
Ernst Walz Bridge	Weir Wieblingen	Neckar bridge A5