Erosion control barrier

Abstract

An erosion control roll including an elongate core member defining an interior space, being open at both ends, and having openings along its length, a pervious filter member open at both ends and surrounding the elongate core member; and, an apron disposed on the upstream side of the pervious filter member, said apron running the length of said filter member, and extending a predetermined distance therefrom.

1 . An erosion control roll comprising: 
 an elongate core member defining an interior space, being open at both ends, and having openings along its length;    a pervious filter member having an upstream side and a downstream side, open at both said upstream and down stream sides, and surrounding said elongate core member; and,    an apron disposed on said upstream side of said pervious filter member, said apron running the length of said filter member, and extending a predetermined distance therefrom.    
   
   
       2 . The erosion control roll of  claim 1  wherein said apron is integrally formed with said pervious filter member.  
   
   
       3 . The erosion control roll of  claim 1  where the open ends of the pervious filter member extend beyond the ends of the elongate core member.  
   
   
       4 . The erosion control roll of  claim 1  wherein the elongate core member is formed for from flexible corrugated pipe.  
   
   
       5 . The erosion control roll of  claim 1  wherein the elongate core member is formed for from an open wire mesh or other open frame material.  
   
   
       6 . (canceled)  
   
   
       7 . The erosion control roll of  claim 4 , wherein the perforations are formed in the pipe, along a 180 degree arc, the first perforation arcuately spaced from the bottom of the pipe so as to define a closed-wall trough for carrying fluid to an open end of the corrugated pipe.  
   
   
       8 . The erosion control roll of  claim 1  wherein the filter member and apron comprise a pervious geotextile fabric.  
   
   
       9 . The erosion control roll of  claim 1  further including a silt fence portion, said silt fence portion comprising a rectangular section of geotextile material, extending from the base of the core member and running longitudinally along the length of said core member, said rectangular section having a plurality of sleeves affixed to and extending perpendicularly from the leading edge of said rectangular section, said sleeves sized to receive stakes for deploying the fence and securing it in place.  
   
   
       10 . The erosion control roll of  claim 9  wherein the silt fence portion is integrally formed from a geotextile fabric.  
   
   
       11 . The erosion control roll of  claim 10  wherein the silt fence portion is formed of the same geotextile fabric as said apron and filter members.  
   
   
       12 . The erosion control roll of  claim 1  further including one or more agents interior of the core member.  
   
   
       13 . The erosion control roll of  claim 12  wherein said one or more agents interior the core member provide a passive dosing mechanism.  
   
   
       14 . The erosion control roll of  claim 1  wherein the openings in the wall of the elongate core member are spaced a distance from the base of the member, to define a walled trough for carrying fluids entering the core member to a discharge point at an end of the member.  
   
   
       15 . An erosion control device including a plurality of the erosion control rolls of  claim 2 , interconnected one to the other in series by intervening couplers, thereby defining a continuous fluid path extending from one core member to the other.  
   
   
       16 . The erosion control device of  claim 15  wherein at least one of the intervening couplers is a tee coupler, said tee coupler connected to a drain pipe for directing discharge of collected fluid downstream of the roll.