Geopipe with partial perforated structure

Abstract

A geopipe with partial perforated structure is disclosed. The geopipe includes a water permeable portion with a plurality of perforated through holes arranged on an upper arc surface of the geopipe for permitting liquid outside the geopipe permeating into the geopipe through the perforated through holes. A water draining portion formed on a lower arc surface from the first end through the second end of the geopipe for draining the water permeated from the perforated through holes of the water permeable portion of the geopipe. The geopipe is further covered with a net layer, or a reinforced layer thereon.

I claim:  
     
         1 . A geopipe for draining liquids, comprising: 
 an elongate pipe having a first end and a second end;    a water permeable portion comprising a plurality of perforated through holes arranged on an upper arc surface from the first end through the second end of the elongate pipe for permitting the liquid outside the elongate pipe permeating into the elongate pipe through the perforated through holes; and    a water draining portion formed on a lower arc surface from the first end through the second end of the elongate pipe for draining the water permeated from the perforated through holes of the water permeable portion of the elongate pipe.    
     
     
         2 . The geopipe as claimed in  claim 1 , wherein the elongate pipe is further covered with a net layer thereon.  
     
     
         3 . The geopipe as claimed in  claim 1 , wherein the elongate pipe is further covered with a reinforced layer thereon.  
     
     
         4 . The geopipe as claimed in  claim 3 , wherein the reinforced layer comprises a plurality of annular ribs surrounding the geopipe and spaced from each other.  
     
     
         5 . The geopipe as claimed in  claim 1 , wherein the perforated through hole is in a form of oval-shaped through hole.  
     
     
         6 . The geopipe as claimed in  claim 1 , wherein the perforated through hole is in a form of circle-shaped through hole.  
     
     
         7 . The geopipe as claimed in  claim 1 , wherein the perforated through hole is in a form of cross-shaped through hole.  
     
     
         8 . The geopipe as claimed in  claim 1 , wherein the perforated through hole is in a form of rectangle-shaped through hole.  
     
     
         9 . The geopipe as claimed in  claim 1 , wherein the perforated through hole is in a form of square-shaped through hole.