UNDERGROUND BURRIED PIPE AND BURYING METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a piping structure and a piping method, by which pipes having different forms can be easily stacked on a pipe body laid in parallel, and damage of the pipe body on lower side and its deformation with time can be minimized, when constructing an electric wire common groove. SOLUTION: A pipe wall 1 is constituted of a pipe body P, which is arranged alternately and is formed by a sectional square wall portion 2 and a sectional circular wall portion 3 in the pipe axial direction, and a sectional circular pipe K disposed in the upper part thereof, wherein the piping position is secured by a pipe pillow 4 for controlling the piping position, by which the sectional circular pipe K is arranged at the prescribed intervals in the longitudinal direction and the pipe body P is provided on the lower side of respective pipe pillows 4, etc., with a sectional U-shaped load distribution covers c, etc., having a length extending over a plurality of walls 2, etc., in the sectional square wall portion 2. COPYRIGHT: (C)2004,JPO