Abstract: The prevention and control of gas hazards should be given priority in the process of coal min-ing. This paper analyzes the characteristics of gas emission during the excavation of colliery D, selectsthe gas pressure, content, absolute gas emission, drilling cuttings and Ah, as monitoring parameters, anduses regional gas pressure measurement, gas prevention measures, local hazard prediction , local extrac-tion measures and extraction effect verification to track and control the gas in the heading face. The gasprevention and control measures in coal mine roadway excavation are thus put forward. The practiceshows that the comprehensive prevention and control technology proposed has effectively improved the gasprevention and control in the tunnel excavation of the test mine, guaranteed the safety of the excavationwork , and promoted the stable progress of the mining work.

Key words: gas, heading face, ventilation system, hazardprediction, comprehensive prevention and control