DE-MOUNTABLE ANNULAR HORIZONTAL TUNNEL Russian patent published in 2009 - IPC E02D29/05 

FIELD: construction.

SUBSTANCE: invention relates to tunnel construction technologies and may be used in road construction for laying temporary underground roads. The invention can be also used in power production industry and communication industries for cable routing, in extractive industries for mineral wealth field development. De-mountable annular and horizontal tunnel consists of the butted and/or mechanically inter-bounded cylindrical casings and includes front and tail cylindrical casings and dismounting unit. The dismounting unit consists of stops and drawbars fixed to stops. The de-mounting device stops are installed and fastened to the front end of the head cylindrical casing, while dismounting device drawbars are represented with rods or ropes, which are continuous in length or consisting of interconnected elements. They are fastened to the stops by mechanical connections, passed through all casing spaces or walls in series and brought outside so that they can be connected to power unit for casing pulling during dismounting.

EFFECT: development of multi-purpose tunnel with wide choice of operational advantages, high reliability and low labour effort for tunnel building.

24 cl, 12 dwg