FIELD: mining.
SUBSTANCE: method of cement injection of fractured ground includes drilling of injection drain holes and around of them, cement grout injection into rock through injection wells, filtering out and removing of grout liquid phase through filter medium of drain holes. Grout liquid phase is filtered out radial to drain hole axis at variable hydraulic resistance of filter medium, and filtrate is removed by free discharge in axial half-socket pipe.
EFFECT: invention increases quality of cement injection of fractured ground around mine workings.
1 dwg
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