ASSEMBLED WATER IMPERMEABLE LINING OF TUNNEL AND CIRCULAR ELEMENT FOR IT Russian patent published in 2010 - IPC E02D29/00 

FIELD: construction.

SUBSTANCE: invention is related to the field of underground tunnels construction, in particular header tunnels and tunnels of various size in watered medium, for instance for faecal and storm water sewage. Provides for the possibility to mechanise and industrialise construction and repair works and efficiency of its erection. For this purpose assembled lining is made of circular elements, comprising reinforced concrete units of various configuration in plan, having two seals each at the ends along units perimetre, and one of units is locking one. At the same time all units have water impermeable protective lining on inner side of units and are reinforced with longitudinal and transverse elements, which create the first reinforcing layer on surface of lining joint with unit concrete, the second reinforcing spatial frame in body of units and the third reinforcing element arranged on embedded part for strapping. At the same time units in ring are joined to each other by side ends with the help of the first joining devices, and annular elements are connected to each other by means of front and back ends with the help of the second joining devices, and joints of units in each ring are displaced relative to joints of units in other ring by an angle of 360/n, where n is number of the second joining devices.

EFFECT: creation of assembled water impermeable lining of tunnel of closed profile providing for perception of loads into construction and operation period and having desired strength, stability and durability under conditions of permanent loads and durable actions of watered medium.

11 cl, 24 dwg