device for the underground production of canals, tunnels o.dgl.

摘要

At least two independent drilling units (1, 2, 10) are used. They are positioned parallel to the axis direction of the channel to be produced, and moving forwards and backwards in a work tube (5) which conforms to the oval or egg-shaped cross-section of the channel. The drilling units are hydraulically driven, and controlled from a central point. They can be advanced or moved independently of one another, and of the work tube (5). In the workshaft (21) is arranged a hydraulic press unit (22) which advances the hollow supports for the channel wall, such supports also having an oval or egg-shaped cross-section (8, 9, 19, 20). USE - To build underground channels, galleries, and similar formations.