METHOD OF CONCRETING ON PNEUMATIC FALSE WORK AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC E04G11/04 E21D11/00 

FIELD: construction.

SUBSTANCE: invention is related to construction and repair of tunnels. Method of concreting on pneumatic false work is characterised by the fact that air casing is installed into additional perforated elastic casing. Device for preparation and supply of concrete mixture is connected by means of pipeline to internal cavity shaped by external side of air casing and internal side of additional perforated elastic casing. Reinforcing structure is assembled and fixed on internal surface of base, then air casing is filled by one quarter of its volume, after that concrete mixture is supplied under pressure to cavity between air casing and additional perforated elastic casing via pipeline and is evenly distributed along surface of air casing by means of its supercharge and pressing of concrete mixture to additional perforated elastic casing, thus extruding concrete mixture through perforation of additional perforated elastic casing by further supercharging of air casing. Device is equipped with working platform with the possibility of longitudinal displacement, where pneumatic pump is fixed, as well as device for preparation and supply of concrete mixture. Air casing with perforated casing are located outside the limits of working platform. Pipeline of device for preparation and supply of concrete mixture is connected to internal cavity shaped by external side of air casing and internal side of perforated elastic casing.

EFFECT: higher reliability, acceleration of flowing and provision of technological process continuity, higher strength characteristics of false work structure.

2 cl, 3 dwg