초록 ▼

A detention filter system for the temporary accumulation and storage of storm water runoff is disclosed for limiting the rate of runoff from a developed tract of land to no more than that which was naturally discharged from the same tract when in its prior undeveloped state. The system includes one

A detention filter system for the temporary accumulation and storage of storm water runoff is disclosed for limiting the rate of runoff from a developed tract of land to no more than that which was naturally discharged from the same tract when in its prior undeveloped state. The system includes one or more conventional rip rap filled gabion boxes which may be aligned end-to-end along the edge of a developed parcel of real estate so that storm water can run off into the boxes and temporarily accumulate therein. The system also includes a sheet of porous fabric or perforated sheet, attached to and covering a surface of the gabion boxes to restrict the rate of flow of storm water runoff flowing through the boxes and the sheet to a downstream storm drain, storm sewer or stream. The sheet may be formed of two or more layers of the porous fabric or perforated sheet. The gabion boxes can function to stabilize an earth cut located on a lower edge of a developed tract such as a driveway and parking lot to keep the cut from eroding or can form a porous dam or barrier for a temporary storm water impoundment basin. When the boxes are used against an earth cut, sidewalks and other development can be built over the boxes to minimize the undeveloped area dedicated to the system.

대표청구항 ▼

1. A storm water detention filter system comprisingat least one gabion box filled with rock particles for receiving storm water runoff from a tract of land therein, said gabion box being positioned with a rear wall thereof against an earth wall; a liquid impervious sheet of material disposed between

1. A storm water detention filter system comprisingat least one gabion box filled with rock particles for receiving storm water runoff from a tract of land therein, said gabion box being positioned with a rear wall thereof against an earth wall; a liquid impervious sheet of material disposed between said earth wall and said rear wall of said box to inhibit dirt from eroding from said earth wall into said box, a lower edge portion of said liquid impervious sheet extending across the ground under said box; and a sheet of porous, liquid permeable material attached to and covering a front wall of said at least one gabion box opposite said rear wall for reducing the flow rate of storm water passing through said box and porous sheet from said tract to a storm drain.