A storm-water redistribution device and installation are described for providing headloss and redistribution of a flow of storm-water runoff. The device includes an elongate, tubular, geotextile enclosure having a plurality of transverse partitions therein that form a plurality of segments along the
A storm-water redistribution device and installation are described for providing headloss and redistribution of a flow of storm-water runoff. The device includes an elongate, tubular, geotextile enclosure having a plurality of transverse partitions therein that form a plurality of segments along the length of the device. Each segment is filled with a particulate material, such as gravel having a desired grade size or distribution thereof. Longitudinal partitions are provided to form one or more transversely positioned compartments. The device is installed perpendicular to a slope to intercept runoff flows. The flow infiltrates the device and is diverted into vertical infiltrating flow, longitudinal flow that distributes the flow along the device length, and transverse flow that exits the opposite side of the device as overland or subsurface flow of reduced velocity. The partitions enable retention of the particulate materials in desired positions within the device during manipulation and use.
대표청구항▼
1. A storm-water redistribution device, comprising: an elongate geotextile enclosure that includes a sidewall that forms a hollow interior space, the sidewall being configured to intercept a fluid flow that is directed substantially transverse to the direction of elongation of the enclosure, the flu
1. A storm-water redistribution device, comprising: an elongate geotextile enclosure that includes a sidewall that forms a hollow interior space, the sidewall being configured to intercept a fluid flow that is directed substantially transverse to the direction of elongation of the enclosure, the fluid flow at least partially penetrating into the interior space through the sidewall to form an internal fluid flow;a first partition forming a longitudinally extending, tubular section within the interior space;a second partition disposed within the interior space and extending between opposing surfaces of the interior space and the first partition to divide the interior space into a plurality of sections; andone or more particulate materials disposed in each of the sections, the particulate materials at least partially diverting the internal fluid flow in one or more directions including generally vertically downward, the generally vertically downward flow at least partially exiting through the sidewall as subsurface infiltration. 2. The storm-water redistribution device of claim 1, wherein the second partition is disposed in a plane that is generally transverse to the length of the enclosure and the sections comprise segments that are arranged end-to-end longitudinally along the length of the enclosure. 3. The storm-water redistribution device of claim 1, wherein the partition extends in a generally longitudinal plane extending along the length of the enclosure and the sections comprise compartments that are arranged side-by-side transversely across the width of the enclosure. 4. The storm-water redistribution device of claim 1, wherein adjacent sections are filled with one or more particulate materials having one or more of a different grade or different type to induce a desired flow characteristic within the respective section. 5. The storm-water redistribution device of claim 1, wherein the internal fluid flow is diverted into one or more of a flow directed substantially transversely to the length of the enclosure and a flow directed substantially longitudinally along the length of the enclosure, the flow directed transversely including one or more of a flow directed generally vertically downward toward and infiltrating into a subsurface and a flow directed generally horizontally and exiting the enclosure as overland flow, and the flow directed longitudinally moving through the partition from a first of the plurality of sections to a second of the plurality of sections. 6. The storm-water redistribution device of claim 1, wherein at least partially diverting the internal fluid flow by the one or more particulate materials produces headloss in the internal fluid flow. 7. The storm-water redistribution device of claim 1, wherein the geotextile enclosure at least partially filters the fluid flow. 8. The storm-water redistribution device of claim 1, wherein the geotextile enclosure comprises one or more of a mesh, a netting, a fabric, a perforated sheet, and a felt. 9. The storm-water redistribution device of claim 1, wherein the particulate materials comprise uniformly graded particles, well graded particles, or gap-graded particles. 10. The storm-water redistribution device of claim 1, wherein the one or more particulate materials in the respective sections are retained by the partition against movement of the particulate materials caused by interaction with the internal fluid flow and gravity. 11. The storm-water redistribution device of claim 1, wherein the partition is comprised of the same or a different material than the enclosure. 12. The storm-water redistribution device of claim 1, wherein a material comprising the partition and the particulate material disposed in the sections formed thereby are selected to provide a predetermined flow direction or a predetermined headloss. 13. A storm-water redistribution installation comprising: an elongate storm-water redistribution device disposed on a surface having a slope, the device being positioned to extend substantially perpendicular to the slope and to receive an originating fluid flow along a sidewall of the device, the device includingthe sidewall formed from a geotextile material that forms an enclosure with a hollow interior,a first partition disposed in the interior to extend transversely across the interior to divide the interior into a plurality of sections arranged end-to-end along the length of the device,a second partition forming a longitudinally extending, tubular section,a third partition that extends between opposing surfaces of the interior of the enclosure and the second partition, anda particulate material disposed in one or more of the plurality of sections and retained against longitudinal movement within the device by the first partition, the device being configured to enable penetration of the originating fluid flow through the sidewall to form an internal fluid flow, a velocity of the internal fluid flow being reduced by contact of the internal fluid flow with the particulate material, and at least a portion of the internal fluid flow being directed generally vertically downward to exit through the sidewall as subsurface infiltration. 14. The storm-water redistribution installation of claim 13, further comprising a second device configured substantially similarly to the storm-water redistribution device and disposed alongside the storm-water redistribution device, the second device receiving a flow of fluid exiting the sidewall of the storm-water redistribution device. 15. The storm-water redistribution installation of claim 13, further comprising a second device configured substantially similarly to the storm-water redistribution device and disposed substantially perpendicular to and adjacent or abutting an end of the storm-water redistribution device and receiving a fluid flow exiting the end of the storm-water redistribution device. 16. The storm-water redistribution installation of claim 13, wherein the storm-water redistribution device is positioned downslope from an impervious structure and to receive a concentrated fluid flow from the impervious structure. 17. The storm-water redistribution installation of claim 13, wherein the storm-water redistribution device is disposed to extend in a substantially V-shaped orientation having an apex of the V-shape aligned with a source of the originating flow and first and second arms of the V-shape extending at least partially downslope. 18. A storm-water redistribution installation comprising: a bed formed from a plurality of elongate storm-water redistribution devices disposed side-by-side on a surface having a slope, the devices being positioned to extend substantially perpendicular to the slope and to receive an originating fluid flow along an upslope side of the bed, each of the devices includinga sidewall formed from a geotextile material that forms an enclosure with a hollow interior,a partition disposed in the interior to divide the interior into a plurality of sections, anda particulate material disposed in one or more of the plurality of sections, the partition retaining a position of the particulate material relative to the device,each of the devices being configured to enable infiltration of a fluid flow through the sidewall to form an internal fluid flow, a velocity of the internal fluid flow being reduced by contact of the internal fluid flow with the particulate material; anda traffic surface disposed to overlie at least a portion of the bed, the bed diverting the originating fluid flow longitudinally along the length of the bed and transversely beneath the traffic surface to at least partially exit the bed on a downslope side as one or more of overland or subsurface flow having a velocity less than that of the originating flow, wherein the traffic surface comprises a trail and the installation is located in one or more of a stream buffer and a linear park. 19. The storm-water redistribution installation of claim 18, wherein at least a portion of the fluid in the originating flow is diverted into a subsurface underlying the bed. 20. The storm-water redistribution device of claim 18, further comprising an inner partition forming a longitudinally extending, tubular section, and wherein the partition extends inward from the opposing surfaces of the interior space of the enclosure to respective opposing sides of the inner partition.
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