METHOD OF SUPPORTING MINE TUNNELS Russian patent published in 2009 - IPC E21D11/00 E21D21/00 

FIELD: mining.

SUBSTANCE: present invention pertains to supporting mine tunnels and can be used in mining industry and tunnel construction. The method of supporting mine tunnels involves drilling holes, putting a net near the walls, fitting an arch support and putting sprayed plaster base-spread concrete. At the bottom of the goaf, between the line holes, holes are drilled with length, multiple of the deviation of the goaf in one cycle. The indicated holes are drilled within the limits of the specified outline of the goaf. Bars are put into the holes. The bars are joined to similar bars of the preceding installation. Between the bars and the walls of the goaf, a net is put. The latter, together with anchor bars, is pressed to the walls of the goaf by the arch support. The sprayed plaster base-spread concrete is then put. The invention provides for safe work in the bottom hole when constructing underground mines and structures in fractured ground and in conditions of high pressure, where it is necessary to install the support tightly against the bottom hole.

EFFECT: provision for safe work in the bottom hole when constructing underground mines and structures in fractured ground and in conditions of high pressure, where it is necessary to install the support tightly against the bottom hole.

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