METHOD OF PREVENTING OUTBURSTS OF COAL AND GAS AND ROCK BUMPS

摘要

FIELD: mining industry. SUBSTANCE: this can be used in developing coal deposits with seams risky as to sudden outbursts and rock bumps. Improved efficiency in prevention of aforesaid phenomena is achieved by injecting electrically conducting liquids into bore-holes drilled in work face until stable electric contact is established between adjacent bore-holes. Checking for sufficient relaxation of seam is performed by measuring resistance of electric circuit between relaxant electrodes installed in aforesaid bore-holes through their entire depth. EFFECT: higher efficiency. 1 cl, 1 tbl, 3 dwgi