Abstract: In order to eliminate the potential safety problems of rockburst in Tingnan coal mine， liquid CO₂ fracturing technology is adopted for pre-splitting blasting in hazardous areas. Through numerical simulation， effect of the control hole on the drilling blasting and the reasonable spacing of blasting hole in Tingnan coal mine are investigated， and the blasting performance is analyzed by the method of drilling bits. The results show that the control hole is favorable for the coal blasting， and the influence scope of crack area of the liquid CO₂ blasting with control hole is significantly larger than that without blasting hole. The reasonable spacing of blasting hole in Tingnan coal mine is 7 m； After blasting， the measured amounts of drilling and cuttings are less than the critical values. The hidden danger of rock burst in coal blocks can be eliminated through blasting to realize normal mining.

Key words: Coal mine, Pre-splitting blasting, Liquid CO2 fracturing technology, Tunnel pressure relief