FIELD: mining.
SUBSTANCE: working pipe is used for lifting of lava and the pipe with smaller diameter for injection of non-flammable gas connected to the working pipe at the pre-set depth by the disperser. The disperser is used with the length from 5 up to 75% from the length of the working pipe with a set of holes with different diameters. Lava lifting includes the following steps: a) the working pipe is lowered to the lava source in such a way that its upper part by 1-2 m exceeds the lava level; b) into the disperser gas is injected until lava saturation in the working pipe; c) the working pipe is lowered into the lava source with lava overflow into the lava source and in this way it is maintained until uniform saturation by gas of lava in the working pipe; d) receptions a)-c) it is repeated until initiating of steady process of lava movement in the whole working pipe; e) as the flow rate of discharge of lava saturated with gas from the working pipe is stabilized the stationary mode of lava lifting is set. For this purpose the working pipe is installed at the pre-set depth, being previously hermetically tied with the reception system on the surface and the fumarole gas catching system. These gases are used as a part of non-flammable gas for injection into the disperser.
EFFECT: improvement of efficiency of the method at the expense of increase of depth of lifting of magmatic lava, safety, uninterrupted operation and controllability of lifting process.
5 cl, 1 ex
