DRAINING METHOD FROM INSIDE OF EARTH AND ITS DRAIN PIPE

PROBLEM TO BE SOLVED: To provide a draining method from the inside of earth and its drain pipe, for performing construction, without maximally impairing a scenery, by facilitating installation work of the drain pipe in earth. SOLUTION: An excavation hole 4 is formed in the earth by an excavator 3. The water permeable drain pipe 6 is mainly composed of cylindrical woven fabric 10 having a self-shape keeping property by using thread having bending repulsion in a part of at least the weft, and is connected to a tip part of an excavation rod 5 of the excavator 3. The drain pipe 6 connected to the excavation rod 5 is pulled in the excavation hole 4 by extracting the excavation rod 5 from the excavation hole 4. Thus, the construction is facilitated more than a conventional construction method, and the drain pipe 6 can be laid in the earth without maximally impairing the scenery. COPYRIGHT: (C)2005,JPO&NCIPI