METHOD FOR OPERATION OF SEWER SYSTEM Russian patent published in 2005 - IPC

FIELD: construction.

SUBSTANCE: method includes cleaning pipes and wells and further maintenance while providing for continuous draining of sewage by liquidating breakdowns, liquidating random obstructions, and also launching new areas of network into operation, while at least one constructed network area is driven though soil or body of existing embankment by, micro-tunneling by means of 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. After pressing through all sections of reconstructed network portion free ends of end sections are connected to existing network.

EFFECT: higher reliability and durability, lower costs.

8 cl, 16 dwg