Sediment control device and system

Abstract

Sediment control devices and systems are provided. The devices are in the form of a multi-layered, fillable bag which generally includes an inner bag structured to contain a granular material, for example, gravel or stone, a separate reinforcement layer located outwardly of the inner bag, and a and an outer layer enclosing the reinforcement layer and having a sealable opening providing access to the inner bag. The devices may be provided pre-filled with the granular material. The devices provide an effective, durable system for filtering runoff water, controlling erosion and/or controlling sedimentation at a construction sight.

1 . A sediment control device comprising: 
 a fillable bag including an openable portion for enabling filling of the bag with a granular material, and a longitudinal seam portion extending along a length of the bag, the bag comprising    an inner layer;    an outer layer located outwardly of the inner layer; and    a reinforcement layer disposed between the inner layer and the outer layer and including opposing longitudinal edges separated from one another by a gap in the reinforcement layer, the gap being effective to facilitate stretching of the fillable bag.    
   
   
       2 . The device of  claim 1  wherein the gap is generally aligned with the seam portion.  
   
   
       3 . The device of  claim 1  wherein the reinforcement layer is less stretchable than at least one of the inner layer and the outer layer.  
   
   
       4 . The device of  claim 1  wherein the inner layer and the outer layer are made of the same material.  
   
   
       5 . The device of  claim 1  further comprising a compressible layer disposed between the inner layer and the outer layer.  
   
   
       6 . The device of  claim 1  wherein the reinforcement layer comprises a polymer grid material.  
   
   
       7 . The device of  claim 1  wherein the reinforcement layer comprises an extruded polymer grid material.  
   
   
       8 . The device of  claim 1  wherein at least one of the first layer and the second layer comprises a woven material.  
   
   
       9 . The device of  claim 1  further comprising a fastening mechanism for enabling sealing of the openable portion.  
   
   
       10 . The device of  claim 1  wherein the fastening mechanism comprises a hook and loop fastening mechanism.  
   
   
       11 . The device of  claim 1  wherein the inner member openable portion comprises a hook and loop fastening mechanism.  
   
   
       12 . The device of  claim 1  further comprising a compressible layer disposed between the outer layer and the inner layer.