Obstruction Device for Flowing Waterways

Abstract

The invention concerns an obstruction device for flowing waterways and rivulets of all kinds, in particular for torrents and similar river beds, with a flexible barrier element in the form of a catchment net ( 4 ), extending from one riverbank ( 2 ) to the other riverbank ( 3 ) transverse to the flow direction ( 7 ). The catchment net ( 4 ) is installed between a lower support rope ( 5 ) and an upper support rope ( 6 ). The support ropes ( 5, 6 ) are anchored in the riverbanks ( 2, 3 ) with rope anchors ( 8, 9 ) attached to their ends, whereby the rope anchors ( 9 ) of the upper support rope ( 6 ) are offset to the front relative to the rope anchors ( 8 ) of the lower support rope ( 5 ) in flow direction ( 7 ). In this way the catchment net ( 4 ) can deform itself when the barrier is filled in such a way that the water, rocks, flotsam etc. then overflowing the net will contact the same either not at all, or only briefly. In this way it is safely and permanently protected against the corrosion and abrasion effect of the overflowing water.

1 . Obstruction device for flowing waterways and rivulets of all kinds, in particular for torrents and similar river beds, with a flexible barrier element ( 4 ) for rocks, flotsam and drifting objects, that can be erected between the riverbanks ( 2 ,  3 ) transverse to the flow direction, characterised in that the flexible barrier element ( 4 ) deforms in such a way when the barrier is filled that the material overflowing the filled barrier will contact the barrier element not at all, or only briefly on the downstream side. 
   
   
       2 . Obstruction device according to  claim 1  with a catchment net ( 4 ) forming the barrier element installed between one or more lower, and one or more upper support ropes ( 5 , e.g.  6 ) transverse to the flow direction ( 7 ), whereby the support rope(s) ( 5 ,  6 ) are anchored in the riverbanks ( 2 ,  3 ) with rope anchors or other rope anchoring means ( 8 , e.g.  9 ) affixed to their ends, characterised in that the rope anchors ( 9 ) of the upper support rope(s) ( 6 ) are offset to the front relative to the rope anchors or other rope anchoring means ( 8 ) of the lower support rope(s) ( 5 ) in flow direction ( 7 ). 
   
   
       3 . Obstruction device according to  claim 2 , characterised in that the rope anchors or other rope anchoring means ( 9 ) of the upper support rope(s) ( 6 ) are offset so far to the front relative to the rope anchors or other rope anchoring means ( 8 ) of the lower support ropes ( 5 ) that the non-deformed level catchment net ( 4 ) is inclined at an angle ( 10 ) of preferably 10° to 45° towards the front in flow direction. 
   
   
       4 . Obstruction device according to  claim 1  with a catchment net ( 4 ′) forming the barrier element, comprising a middle zone ( 13 ) and two riverbank zones ( 14 ,  15 ) projecting over the same in the direction of the riverbank, installed between a lower and an upper support rope ( 5 ′, e.g.  6 ′), and possibly equipped with interim ropes extending transverse to the flow direction ( 7 ), whereby the support ropes ( 5 ′,  6 ′) are guided by two supports ( 16 ,  17 ) delimiting the width of the middle zone ( 13 ), characterised in that the supports ( 16 ,  17 ) are inclined forwards in flow direction ( 7 ) relative to the vertical. 
   
   
       5 . Obstruction device according to  claim 4 , characterised in that the supports ( 16 ,  17 ) comprise an angle of incline ( 10 ′) of preferably 10° to 30°. 
   
   
       6 . Obstruction device according to  claim 2 , characterised in that an overflow protection ( 11 ) can be fitted to the upper edge area of the catchment net ( 4 ), which prevents rocks overflowing the catchment net from contacting the same on the downstream side. 
   
   
       7 . Obstruction device according to  claim 6 , characterised in that the overflow protection is formed by a flattened sheet metal profile ( 11 ) fitted to the upper edge area of the catchment net ( 4 ), or by a protective metal sheet attached to the upper support rope. 
   
   
       8 . Obstruction device according to  claim 2 , characterised in that device elements at risk from abrasion in the upper edge area of the catchment net ( 4 ), and in particular the upper support rope ( 6 ) are preferably associated with abrasion protection parts equipped with a special abrasion protection lacquer. 
   
   
       9 . Obstruction device according to  claim 8 , characterised in that the abrasion protection parts take the form of replaceable protective pipes or protective profiles. 
   
   
       10 . Obstruction device according to  claim 8 , characterised in that the abrasion protection parts can be retrofitted, and also reinforced.