Confinement structures—DefenCell plastic gabion system
A confinement structure comprises one or more open cells ( 70 ) for confinement, in use, of particulate fill materials such as soil, sand or aggregate. The cells ( 70 ) comprise walls ( 72 ) formed of a composite material comprising a polymeric grid layer laminated to a fabric layer. The walls ( 72 ) may be formed from a strip of the composite material comprising one or more living hinges. The cells ( 70 ) may be provided with skirt portions ( 74 ) that extend from at least some of the walls ( 72 ).
1. A confinement structure, comprising:
a first open cell configured for confinement of particulate fill materials, the first open cell comprises (i) a first plurality of separate external wall panels each comprising a composite material defined by a polymeric grid layer thermally laminated to a fabric layer, and (ii) a first plurality of mechanical hinges each comprising a hinged piece of flexible fabric material; wherein the first plurality of separate external wall panels are pivotally connected using the first plurality of mechanical hinges;
wherein the fabric layer of at least one external wall panel comprises bicomponent fibers having a sheath component and a core component, and wherein the sheath component is thermally bonded to the polymeric grid layer.
2. The confinement structure of claim 1 , wherein the first plurality of mechanical hinges includes a first mechanical hinge bonded to a first polymeric grid layer of a first external wall panel and a second polymeric grid layer of a second external wall panel.
3. The confinement structure of claim 2 , wherein the first mechanical hinge is adhesively glued or thermally bonded to the first polymeric grid layer and the second polymeric grid layer.
4. The confinement structure of claim 1 , wherein the first plurality of mechanical hinges includes a first mechanical hinge bonded to a first fabric layer of a first external wall panel and a second fabric layer of a second external wall panel.
5. The confinement structure of claim 4 , wherein the first mechanical hinge is adhesively glued, stitched, or thermally bonded to the first fabric layer and the second fabric layer.
6. The confinement structure of claim 1 , wherein the first plurality of mechanical hinges comprise a geotextile material.
7. The confinement structure of claim 1 , wherein the first plurality of mechanical hinges comprises a liquid impermeable fabric material.
8. The confinement structure of claim 1 , wherein the composite material is vapor permeable.
9. The confinement structure of claim 1 , wherein the fabric layer of at least one external wall panel comprises a microporous fabric material.
10. The confinement structure of claim 1 , wherein the fabric layer of at least one external wall panel comprises a liquid impermeable and vapor permeable fabric.
11. The confinement structure of claim 1 , further comprising a second open cell located adjacent to and interconnected with the first open cell.
12. The confinement structure of claim 11 , wherein the second open cell comprises (i) a second plurality of separate external wall panels, and (ii) a second plurality of mechanical hinges; wherein the second plurality of separate external wall panels are pivotally connected using the second plurality of mechanical hinges.
13. The confinement structure of claim 12 , wherein the first plurality of separate external wall panels includes a first external wall panel and the second plurality of separate external wall panels includes a second external wall panel; the first open cell and the second open cell being joined together to provide an inner wall defined by both of the first external wall of the first open cell and the second external wall of the second open cell.
14. The confinement structure of claim 11 , wherein the first open cell, the second open cell, or both are provided with one or more skirt portions extending from at least one of the separate external wall panels.
15. The confinement structure of claim 14 , wherein the one or more skirt portions are formed by a separate piece of material fastened to the composite material.
16. The confinement structure of claim 1 , wherein the confinement structure comprises a first configuration comprising a flattened configuration wherein a first external wall panel and a second external wall panel are folded face-to-face against one another and a third external wall panel and a fourth external wall panel are folded face-to-face against one another.