METHOD FOR REINFORCEMENT OF MINES SOIL Russian patent published in 2012 - IPC E21D11/00 

FIELD: mining.

SUBSTANCE: method for reinforcement of mines soil includes the following stages: the required thickness is determined for a reinforced layer of rocks in soil; boreholes are drilled for the thickness of the reinforced layer, heating elements are installed in them, and rocks of the reinforced layer are burnt. At the same time in front of the bottomhole a reverse load-carrying vault is arranged in two stages. Besides, at the first stage advance inclined boreholes are drilled, heating elements are installed in them, and soil rocks are previously thermally treated. At the second stage with a certain delay from the bottomhole, boreholes are drilled in a mine soil in the plane of its cross section, and with the help of thermoelements installed in them, repeated heat treatment of soil rocks is carried out, as well as final shaping of the reverse load-carrying vault. According to the second version, the reverse load-carrying vault is formed in two stages using only advance inclined boreholes, at the same time for each stage of thermal treatment a different group of boreholes is used.

EFFECT: higher stability of mine rocks in areas of clayey and clay-containing rocks disposed to swelling.

2 cl, 4 dwg