UNDERGROUND FACILITY LINING Russian patent published in 2012 - IPC E21D11/10 E02D29/45 

FIELD: construction.

SUBSTANCE: underground facility lining has a spatial reinforced woven frame corresponding to an underground facility contour and concrete. At the same time the spatial reinforced woven frame comprises closed external and internal contours connected to each other by two external circular elements. Besides, the frame also comprises internal solid partitions forming tight chambers, where internal partitions with arranged holes are located. Tight chambers are equipped with valves connected to the inside of the underground facility. Besides, for each tight chamber one valve is installed for filling with air, and the other one - for its filling with concrete. The spatial reinforced woven frame may be arranged from a waterproof high-strength fabric reinforced with aramide fibres.

EFFECT: increased load-carrying capacity and reliability of tunnel walls reinforcement.

2 cl, 4 dwg