High-strength wire mesh and rock fall prevention net

Abstract

A high-strength wire mesh formed by a wire having a tensile strength exceeding 2200 MPa, and having an amount of deflection of 707 mm or greater as a net body under the following conditions: a length of a cantilever beam that supports the net body in a line wire direction in a cantilevered state is 1000 mm, and an amount of displacement in a vertical direction of a free end at this situation is defined as the amount of deflection. In this manner, a high-strength wire mesh that is formed by a wire with a high tensile strength and that also has the followability to the unevenness of the slope surface is provided.

1 . A high-strength wire mesh comprising a wire having a tensile strength exceeding 2200 MPa, wherein 50 m or greater of said wire is used to knit 1 m 2  of the wire mesh. 
     
     
         2 . The high-strength wire mesh according to  claim 1 , wherein a wire diameter of said wire is 1.0 mm or greater and 3.0 mm or less. 
     
     
         3 . The high-strength wire mesh according to  claim 1 , having an amount of deflection of 707 mm or greater as a net body wherein a length of a cantilever beam that supports said net body in a line wire direction in a cantilevered state is 1000 mm, and an amount of displacement in a vertical direction of a free end at this situation is defined as the amount of deflection. 
     
     
         4 . The high-strength wire mesh according to  claim 1 , wherein the wire mesh has a thickness of 30 mm to 70 mm. 
     
     
         5 . The high-strength wire mesh according to  claim 1 , wherein the wire mesh is a rhombus wire mesh. 
     
     
         6 . The high-strength wire mesh according to  claim 1 , wherein the wire mesh is the rhombus wire mesh, and
 a line wire constituting said rhombus wire mesh is formed in a helical shape having a thickness.   
     
     
         7 . The high-strength wire mesh according to  claim 5 , wherein:
 a wire mesh is said rhombus wire mesh, and   the wire mesh has a thickness of 30 mm to 70 mm by forming a line wire constituting said rhombus wire mesh in a helical shape having a thickness.   
     
     
         8 . The high-strength wire mesh according to  claim 5 , wherein an annular portion having a length of one round or greater of a helix is formed at an end portion of the line wire constituting the rhombus wire mesh and formed in a helical shape. 
     
     
         9 . The high-strength wire mesh according to  claim 1 , wherein a tensile strength of said wire is 2800 MPa or less. 
     
     
         10 . A rock fall prevention net formed by the high-strength wire mesh according to  claim 1 . 
     
     
         11 . A high-strength wire mesh comprising a wire having a tensile strength exceeding 2200 MPa, and having an amount of deflection of 707 mm or greater as a net body under following conditions, wherein:
 50 m or greater of said wire is used to knit 1 m 2  of the wire mesh, and wherein   a length of a cantilever beam that supports said net body in a line wire direction in a cantilevered state is 1000 mm, and an amount of displacement in a vertical direction of a free end at this situation is defined as the amount of deflection.   
     
     
         12 . A rock fall prevention net formed by the high-strength wire mesh according to  claim 11 . 
     
     
         13 . A high-strength wire mesh comprising a wire having a tensile strength exceeding 2200 MPa, wherein:
 the wire mesh is a rhombus wire mesh, and   an annular portion having a length of one round or greater of a helix is formed at an end portion of a line wire constituting the rhombus wire mesh and formed in a helical shape.   
     
     
         14 . A rock fall prevention net formed by the high-strength wire mesh according to  claim 13 . 
     
     
         15 . The high-strength wire mesh according to  claim 13 , having an amount of deflection of 707 mm or greater as a net body under following conditions, wherein:
 a length of a cantilever beam that supports said net body in a line wire direction in a cantilevered state is 1000 mm, and an amount of displacement in a vertical direction of a free end of said cantilever beam is defined as the amount of deflection.   
     
     
         16 . A high-strength wire mesh comprising a wire having a tensile strength exceeding 2200 MPa, and having an amount of deflection of 707 mm or greater as a net body under following conditions, wherein:
 a basic aspect of the wire mesh is a rhombus wire mesh, and   the wire mesh has a thickness of 30 mm to 70 mm by forming a line wire constituting said rhombus wire mesh in a helical shape having a thickness, and wherein   a length of a cantilever beam that supports said net body in a line wire direction in a cantilevered state is 1000 mm, and an amount of displacement in a vertical direction of a free end at this situation is defined as the amount of deflection.   
     
     
         17 . A rock fall prevention net formed by the high-strength wire mesh according to  claim 16 .