The device for retaining materials, includes a retaining structure configured to retain materials; a fastening assembly intended to be fastened to an upstream anchoring point and configured to connect the retaining structure to the upstream anchoring point, the fastening assembly comprising a plurality of connecting elements, each connecting element being flexible and elongate, and comprising a first end portion connected to the retaining structure and a second end portion intended to be connected to the upstream anchoring point; and at least one holding element configured to hold the retaining structure in position and comprising a first end portion connected to the retaining structure and a second end portion intended to be connected to a downstream anchoring point disposed downstream of the retaining structure.

A flexible barrier includes: posts, retaining ropes and a metal net; wherein each of the posts comprises a post body and a post foundation hinged; the retaining ropes includes longitudinal retaining ropes, top retaining ropes, intermediate retaining ropes, and diagonal retaining ropes connected between the posts and the metal net; wherein a lower portion of the metal net is obliquely arranged towards a downstream of a slope; the metal net is loose when no impact is applied and a bottom of the metal net is fixed with short anchors; the bottom of the metal net has a redundancy and is folded towards a upstream of the slope or buried in the slope. The present invention has a reasonable structure and can fully take advantage of the strength of the soil mass itself to block moving soil mass (debris flow, granular avalanche, etc.) and systematically reduce a structure internal force.

A device (1) comprises: a cylindrical shell (4); a first spring (5) encased inside the cylindrical shell (4); a second spring (6) encased inside the cylindrical shell (4); a separator (13) in the cylindrical shell (4) separating the first and second springs (5, 6); a first end plate (12) on a first side (13a) of the separator (13) and a second end plate (11) on a second side (13b) of the separator (13); a first rod (2) and a second rod (3) passing openings (20a, 20b) provided at each end of the cylindrical shell (4), with the first rod (2) connected to the first end plate (12) and the second rod (3) connected to the second end plate (11); and a spacer (14) inserted between the first end plate (12) and the first spring (5).

A combined type flexible glass net system used for protection against full-particle falling rocks on plank roads in scenic spots includes a supporting layer, an intercepting throwing layer and a flexible glass net isolating layer, wherein the supporting layer is longitudinally arranged above a protective area along a mountain, and includes a supporting steel frame and an oscillating type supporting rod; the intercepting throwing layer is supported on the supporting layer, and includes metal meshes, an along-cross-slope lower connecting rope, an along-cross-slope upper connecting rope, an along-slope connecting rope and a reinforcing rope; and the flexible glass net isolating layer includes glass plates, glass net supporting cables and a hoop type hinged piece, wherein the glass plates are connected to the glass net supporting cables through the hoop type hinged piece, and the glass net supporting cables are hung below the supporting steel frame.

A wire netting, in particular a safety net, with a plurality of helices which are braided with each other, of which at least one helix is bent from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire, in particular comprises a high-tensile steel, the at least one helix having at least one first leg, at least one second leg as well as at least one bending region connecting the first leg and the second leg to each other, wherein the longitudinal element is bent at least substantially torsion-free in itself along a contour of the first leg and/or of the second leg.

A wire netting, in particular a safety net, with a plurality of helices which are braided with each other, of which at least one helix is bent from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire, in particular comprises a high-tensile steel, the at least one helix having at least one first leg, at least one second leg as well as at least one bending region connecting the first leg and the second leg to each other, wherein the longitudinal element is bent at least substantially torsion-free in itself along a contour of the first leg and/or of the second leg.

A hexagonal wire netting, a process for manufacturing such a wire netting and a device for manufacturing a hexagonal wire netting, the device including an assembly of tubes for leading the wires of which every other is twisted into a spiral shape, a spindle assembly and a drum receiving the wire netting, the drum being provided with detent elements. Between each tube leading the spirally twisted wire and the cooperating spindle a straightening guide is located having an inlet opening cooperating with the tube and an outlet opening cooperating with the spindle. The detent elements are arranged on the drum in such a way that the produced wire netting has meshes in which the proportion of the width to the length is less than 0.75.

A collapsible runway side barrier for preventing foreign object debris (FOD) from entering a runway and taxiway is disclosed. The barrier may have an aerodynamic profile, one side of the barrier profile may be convex and the other side of the barrier profile may be concave. The side barrier may further have ground attachment elements and may be constructed to collapse if the landing wheels of an aircraft impact the barrier.

Disclosed is an illuminating safety net which includes a net body which has a quadrilateral perimeter of elongate tensile members, and a plurality of elongate tensile elements attached to the perimeter and extending within the perimeter in at least two transverse directions; and an elongate flexible lighting strip engaged to the net body along at least part of a perimeter edge of the perimeter.

The present invention describes an electronic device (2) and corresponding method for monitoring hydrogeological phenomena, in particular the integrity of a rockfall protection barrier by detecting mechanical load exceeding a threshold, such as due to impact or debris flow. The device is provided with elongated flexible legs protruding from the housing in a radial manner and connected to a surface to be monitored (i.e. rockfall net) for detecting mechanical stress.