PERFORATED PIPE AND ITS PLACING METHOD

摘要

PROBLEM TO BE SOLVED: To provide technique for placing a perforated pipe into the ground, facilitating the placement of the perforated pipe with openings in optional shapes into the ground even when the wall of a drilled hole to insert the perforated pipe therein is collapsed. SOLUTION: Through-holes 3 permeable to a fluid are provided in a pipe wall 2 and a closing material 11 is provided for closing the through-holes 3. The closing material 11 uses the perforated pipe 1 constructed to be removable from the inside of the pipe. After the perforated pipe is inserted into the drilled hole, the closing material 11 is removed to make the through-hole 3 open and the permeable pipe to be placed is installed into the ground.