PIPELINE LAID UNDER AUTOMOBILE ROAD Russian patent published in 2001 - IPC

FIELD: pipeline transport construction. SUBSTANCE: pipeline is laid in shell made of pipe with draw-out member and of side and end seals. Ferroconcrete plates made monolithic with shell are laid under shell within the limits of roadbed. Overweights are positioned above the shell. Draw-out member is extended from pipe into the shell to length which ensures formation of air channel under roadbed. Flaps made of gas-and-waterproof film are glued to one of shell ends. Draw-out member is provided with branch fitted with a plug. Shell is extended and window closed with the adhesive film and cover and poured with loose material is made at a distance of 10 m from roadbed edge bu at least 2 m from bottom of embankment. Pipeline is coated with porous material on sides and covered with electrical conducting material on the top of insulation. EFFECT: enhanced reliability. 8 cl, 5 dwg