METHOD FOR STRENGTHENING OF HYDRAULIC FILLING MASSES Russian patent published in 2009 - IPC E21F15/00 

FIELD: mining.

SUBSTANCE: invention is related to production of mineral raw materials in running of stable ores by heading-and-stall methods. Method for strengthening of filling mass includes supply of filling materials with various content of binders. Hydraulic filling of chamber with finely dispersed material without binders is carried out to elevation of drilling horizon soil. After water drainage and setting of filling mass the following are drilled in staggered order along chamber perimetre from the side of processed interchamber sight pillars: boreholes - in chamber ceiling and, opposite to them - wells for the whole capacity of filling mass. Anchors having ring in lower part are inserted in boreholes and wedged, and case pipes are lowered into wells, and then for the whole depth - armature rods, ends of which are suspended to chamber ceiling with anchor rings, afterwards wells and case pipes are filed with mortar, containing binder. Upper part of chamber up to ceiling is filled with filling mass without binder.

EFFECT: invention makes it possible to increase technological resources of stripped chambers filling and to reduce consumption of binder.

4 dwg