Mat threshold

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Mat threshold
Mat threshold, August 2000
Mat threshold, August 2000
Location: SwitzerlandSwitzerland Switzerland
Canton BernCanton Bern Bern
Tributaries: Aare
Larger cities on the shore: Bern
Mat threshold (Canton of Bern)
Mat threshold
Coordinates 601001  /  199404 coordinates: 46 ° 56 '45 "  N , 7 ° 27' 6"  O ; CH1903:  601001  /  199404
Data on the structure
Lock type: Longitudinal weir
Construction time: middle Ages
Height of the barrier structure : approx. 3 m
Crown length: 320 m
Crown width: 11-14 m
Power plant output: 1.2 MW
Operator: City of Bern

The Matt threshold is a longitudinal weir in the river Aare in the city of Bern . The weir is proven in the Middle Ages and serves to drain water into the Matte district , where businesses could settle. From 1891 the water was also used for the operation of the mat power plant of the city of Bern's electricity works , which later became Energie Wasser Bern (EWB).

history

The mat sill is mentioned before 1218. In 1360, the city of Bern acquired the threshold and the associated mills from Johann II von Bubenberg for 1,300 Florentines . Probably until the 17th century, the threshold consisted of a row of wooden boxes anchored in the river floor in block construction , which were filled with stones. In the years 1640 and 1641 a wall was built, which allowed higher traffic jams. The supervision was entrusted to a threshold master who lived in the threshold mätteli in house Dalmaziquai 11, today's restaurant threshold mätteli. In 1890 the weir consisted of 54 lock locks and nine deep locks. The mat sleeper was renovated between 1983 and 1991.

technology

The mat sill is located south of the peninsula with the old town of Bern at a point where the river bed has a natural step. A longitudinal weir running diagonally through the river forces around 40 m³ / s of water into a commercial sewer, where it is used by the Matte power station to generate energy. The usable gradient is 1.3 to 3.2 meters, depending on the drain. The longitudinal weir consists of 65 manual shooters and two semi-automatic shooters for winter operation. An automatic computer system removes up to 120 tons of rubbish every year .

Mat sleeper on an aerial photo from 1938

Web links

Commons : Mat sill  - collection of images

Individual evidence

  1. ↑ a b c mat threshold Bern. Association of Swiss Mill Friends (VSM / ASAM);
  2. ^ History. In: Quellenmätteli Restaurants Bern. Retrieved April 29, 2019 .
  3. ↑ a b c K. Jud: Electricity works of the city of Bern . In: Swiss engineer and architect . tape 104 , issue 15, 1986, pp. 350 .
  4. ↑ a b Armand Baeriswyl: Sodbrunnen - Stadtbach - Gewerbekanal . In: Communications from the Natural Research Society in Bern . 2012, doi : 10.5169 / seals-389788 ( seals.ch ).
  5. ↑ Federal Office of Energy (Ed.): Statistics of the hydropower plants in Switzerland . January 1, 1914, p. 37 .