Protective Net, Especially For Rockfall Protection Or For Verge Securing

Abstract

A protective net, especially for rockfall protection or for verge securing, with a diagonal weave ( 10 ), is formed by a three-dimensional mattress-like structure. The same is woven from individual spiral-shaped bent wire strands, wire bundles, wire cables ( 11, 12, 13, 14 ) or suchlike, which incorporate two or more wires ( 22 ) or wire strands made of steel. It is of great advantage if the wire strands, wire cables, or wire bundles or suchlike are made at least in part from high tensile steel, and if the protective nets can therefore be equipped with very great strength.

1 . Protective net, especially for rockfall protection or for verge securing, which is formed by means of a diagonal weave ( 10 ) produced from wires ( 22 ) and forming a three-dimensional, mattress-like structure, characterised in that the diagonal weave ( 10 ) is woven from wire strands, from wire bundles, from wire cables ( 11 ,  12 ,  13 ,  14 ) or suchlike, incorporating two or more wires ( 22 ) or wire strands made of steel.  
   
   
       2 . Protective net according to  claim 1 , characterised in that the wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) or suchlike are made at least in part from high tensile steel.  
   
   
       3 . Protective net according to  claim 1 , characterised in that the wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) are flexibly connected with one another at their ends in pairs via loops ( 11 ″,  12 ″).  
   
   
       4 . Protective net according to  claim 3 , characterised in that the wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) are additionally equipped with at least one loop ( 19 ) wound around their own circumference following their bending into loops ( 11 ″,  12 ″).  
   
   
       5 . Protective net according to  claim 1 , characterised in that the wires ( 22 ) forming the wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) are corrosion resistant.  
   
   
       6 . Protective net according to  claim 1 , characterised in that the wires ( 22 ) forming the wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) have a nominal strength within a range of 1000 to 2200 N/mm 2 .  
   
   
       7 . Protective net according to  claim 1 , characterised in that the spiral-shaped, bent wire strands, wire cables, or wire bundles ( 11 ,  12 ,  13 ,  14 ) forming the diagonal weave ( 10 ) have an angle of inclination (α) of preferably between 25° to 35°.  
   
   
       8 . Protective net according to  claim 1 , characterised in that a verge securing ( 40 ) incorporates the wire weave ( 10 ), fitting elements ( 15 ) that can be sunk into the ground with claw plates or suchlike holding the weave to the earth surface, and at least one rope ( 21 ) on the surface, holding and stretching the weave.  
   
   
       9 . Method for producing a protective net according to  claim 1 , characterised in that a wire strand, a wire bundle, a wire cable ( 11 ,  12 ,  13 ,  14 ) or suchlike is introduced at a defined angle of inclination (α) at least up to a spike of a means and bent around said spike in a defined length (L) by approximately 180°, and in that the wire strand, the wire bundle, the wire cable ( 11 ,  12 ,  13 ,  14 ) or suchlike is advanced by the defined length L several times around its longitudinal axis in relation to the spike ( 66 ) and bent around the spike by 180° each time until this wire strand, wire bundle, wire cable ( 11 ,  12 ,  13 ,  14 ) or suchlike has taken on a spiral-shaped form.  
   
   
       10 . Method according to  claim 9 , characterised in that a spiral-shaped bent wire strand, a wire bundle, a wire cable ( 11 ,  12 ,  13 ,  14 ) or suchlike is woven together with a second spiral-shaped bent wire strand, a wire bundle, a wire cable ( 11 ,  12 ,  13 ,  14 ) or suchlike, the second with a third, and repeated until the wire weave has reached the desired size.