EXECUTIVE BODY OF TUNNELLING SHIELD COMPLEX FOR CONSTRUCTION OF MULTILANE ROAD AND RAILWAY TUNNELS AND PILLARLESS METRO STATIONS Russian patent published in 2017 - IPC E21D9/06 

FIELD: construction.

SUBSTANCE: executive body of the oval-shaped shield complex comprises lateral working bodies that represent ovals formed by rotating about the vertical axis of the lateral tunnel arches and their coupling with the arch and the reverse arch of the tunnel. The front working body consists of three working bodies, each of which is formed by rotating about the horizontal axes of the arch and the reverse arch circles, wherein the intermediate working body is made concave. The gaps between them and the shield shell correspond to the working tool overhang, and the working tool is mounted with the displacement to the development magnitude.

EFFECT: provision of tunneling with the optimal oval cross-section shape, while reducing the costs for the rock development; provision of tunneling in various geological conditions at the large influx of water, creating the conditions for the maximum mechanization and automation of all production processes.

2 cl, 6 dwg