METHOD OF CREATING WATER-RESISTANT FILLING MASS Russian patent published in 2018 - IPC E21F15/00 C04B28/04 

FIELD: mining.

SUBSTANCE: method includes production of filling mixture by mill technology based on clinker and zeolite as binding agent, feeding it by gravity through a pipeline system and placing in mined-out space with its preliminary partial reinforcement. At that, successive supply and placement of two solutions is performed in mined-out space on level of an excavation located below pressure water-bearing horizon: first the solutions with water-resistant properties for height of not less than 1.5 m with embedding into the host rocks, and from the top of the base layer is the low-clinker under the roof of the excavation, then a drainage drift (DD) is developed in the filling mass on the contact with the host rocks along the contour of the water-resistant layer in its lower part and drainage holes (DH) are drilled out from the drainage drift into the filling mass above the water-resistant layer for complete interception and diversion of brines.

EFFECT: provision of safe conditions for development of underlying mineral reserves due to complete interception and diversion of filtered brines.

18 cl, 4 tbl, 3 dwg