Method of acting remotely in a mine shaft, in particular in a site for deep storage of nuclear wastes

A method for remote control of a mobile robot carriage in an underground gallery connected to the surface by a shaft provided with an elevator for carrying said mobile robot carriage during vertical ascent and descent of the elevator and permitting deep storage of radioactive waste, said method comprising:

• providing a plurality of waveguides running from a control station including a signal generator and a signal receiver and situated on a surface above the underground gallery by disposing:
• at least one first waveguide at said surface extending from the control station to an entrance to the shaft;
• at least one second waveguide along the shaft and connected at a top end of paid record waveguide to the first waveguide;
• and at least one third waveguide along the gallery and connected to the second waveguide in the vicinity of an entrance to the gallery;
• and wherein
• said method further comprises transmitting control signals from said control station at said surface, to said robot carriage for controlling movement of the robot carriage from said control station;
• said control signals travelling via said first waveguide during travel of the robot carriage over the surface;
• said control signals travelling via said first waveguide and said second waveguide during loading of the robot carriage into the elevator and during lowering of the robot carriage down the shaft by descent of the elevator;
• and,
• said control signals travelling via said first waveguide, said second waveguide and said third waveguide during unloading of the robot carriage from the elevator at a level of the gallery and during movement of the robot carriage along the gallery.