Extraction Model Research on Space-time Coordination of Gas Deep Mining

Based on analyzing the laws of the pressure relief gas which is in "S" type overburden rock fracture space of 24060 working face. The paper established the gas coordination extraction time and space pattern in 24060 stope, and adopted upper-corner gas extraction, extraction from the high-level tail roadway and inclined to "Y" type ventilation mode for gas comprehensive management. The paper designed and evaluated the upper-corner gas extraction, extraction from the high-level roadway and inclined to "Y" type ventilation. It is concluded that the main gas extraction is high-level tail roadway extraction and gas extraction in upper corner, the auxiliary gas extraction is burying pipeline in the goaf and inclined to "Y" type ventilation, which reduces the gas concentration of the working face and ensures the safety and efficient production of the working face.