Applied Technology Practice of Pressure Balancing Ventilation for Harmful Gas Treatment In Working Face

According to the actual situation of threatening life safety and affecting normal production caused by abnormal inrush of harmful gas from upper fire area of close distance coal seams, arranged and applied pressure balancing ventilation system in 30110 working face and studied safety assurance technology of normal operation and special period of even pressure ventilation system, which effectively guaranteed the stable operation of pressure balancing ventilation system and prevented abnormal inrush of harmful gas from upper fire area and ensured the security and stability of 30110 working face during the period of mining, backout caving and special period.