CLOSED CONDUIT DEVICE FOR UNDERGROUND IRRIGATION AND ITS FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a closed conduit device for underground irrigation, and its forming method for easily cleaning the inside of perforated pipes, and easily constructing closed conduit equipment even when sediment precipitates and accumulates in the perforated pipes such as a closed conduit drain pipe. SOLUTION: This closed conduit device for irrigation connects the drain pipe 25 reaching a drainage channel 15 to a collecting pipe 23 by connecting one side ends of a plurality of perforated pipes 27 buried in the ground of a paddy field (a cultivation division 13) to a collecting pipe 26. A guide pipe 31 for guiding a pipe cleaner toward the inside of the respective perforated pipes 27 is respectively connected to a position opposed to a perforated pipe connecting part in the collecting pipe 26. The other side ends of the guide pipe are uplifted, and can be opened on the ground. COPYRIGHT: (C)2004,JPO&NCIPI