METHOD FOR OPERATION OF SYSTEM OF PIPELINES FOR TRANSPORTING LIQUID AND/OR GASEOUS SUBSTANCE Russian patent published in 2005 - IPC

FIELD: construction.

SUBSTANCE: method includes making a mini-tunnel by serial pressing through, in soil with concurrent feeding of special solution, at least two hollow concrete sections connected with pressing, each of which is made with end portions open at ends, one of which is made on outer side with ring-shaped groove open from end portion, wherein metallic ring is mounted projecting beyond section end, with thickness not greater than groove depth, hollow of which together with inner hollow of end portion of section forms shelf-like cone, and other end portion of section is made stepped and narrowing towards end with forming of bushing portion with one shelf for ring of adjacent section cone and no less than with one shelf for ring compacting insert made of soft pressurizing gas and water impermeable material, tightly clinging by one side to surface of shelf, and by other - to inner surface of ring, while shelves of bushing portion are made within limits of section wall half thickness, which half is directed outwards. End portions of pipeline sections adjacent to mini-tunnel are made matching with adjacent mini-tunnel sections or transfer sections are used and/or inserts, while pipeline is connected to mini-tunnel after pressing through in soil and/or embankment of the last mini-tunnel section.

EFFECT: lower costs, higher reliability and durability.

8 cl, 16 dwg