MIXTURE AND METHOD FOR PRODUCTION OF TRANSMITTING DEVICE AND ATTENUATOR OF REMOTE IMPULSE OF FIRING HOLE AND METHOD FOR EXCAVATION IN BLOCK ROCK Russian patent published in 2009 - IPC F42D1/00 F42D3/04 

FIELD: mining engineering.

SUBSTANCE: mixture for production of transmitting device and attenuator of remote impulse of firing hole comprises water-soluble thickening agent of 20% to 29% by weight and glass hollow microspheres ranging from 5 to 100 mcm in diametre by weight in quantity of 80% to 71% by weight. The method for production of mixture for transmitting device and attenuator of remote impulse of firing hole, wherein dry mixture shall be diluted in the ration of 1 part of dry mixture to 35-55 parts of water by weight, pH value and relative viscosity shall determined, pH value shall be modified to pH6-pH8 and when diluting with water the required relative viscosity shall be achieved. The diluted mixture transfers and distributes attenuated energy of hole firing. The mixture is used for excavation in block rock where it is added in the holes prepared for dislodging.

EFFECT: invention enables to quarry block rock without damage to block and with minimum blasting agent costs and minimum environmental damage.

16 cl, 2 tbl, 3 dwg