METHOD FOR OPERATION OF LOW-VOLTAGE OR HIGH- VOLTAGE CABLE NETWORK, AT LEAST PARTIALLY DRIVEN THROUGH COLLECTORS AND/OR TUNNELS Russian patent published in 2005 - IPC

FIELD: construction.

SUBSTANCE: method includes continuous feeding of electric power having appropriate frequency and voltage to consumers due to maintenance operations, and also launching new areas of network into operation, while at least one of constructed network areas is driven in soil or in body of existing embankment by micro-tunneling by means of serial pressing in soil with concurrent feeding of special solution of at least two hollow concrete sections, connected to each other and to network with pressing, each section being made with open end portions, one of which is made on outer side with open circular groove at end portion, wherein metallic ring is mounted, projecting behind end piece, having thickness no 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 of soft pressurizing gas and water impermeable material, tightly clinging by one side to shelf surface, and by other side - to inner surface of ring, while shelves of bushing portion are made within limits of outward-directed half of thickness of section wall. After pressing through all sections of reconstructed network portion, free ends of end sections are attached to existing network.

EFFECT: lower laboriousness, lower costs, higher reliability and durability.

8 cl, 16 dwg