Gas Comprehensive Control Techniques of Safety Driving in Gas Accumulation Segment of Conveyor Gateway

The conveyor gateway of Zhangji mine 14138 face constructs along the 8^# seam, crosses seam segment of -550 m upper and lower two elevation segment, -550 m elevation and below is controlled according to outburst risk zone, driving centre of conveyor gateway must pass through the 200 m high gas accumulation segment. To solve this problem, Zhangji mine uses comprehensive control method, safely pass through the gas accumulation segment, and makes face smoothly advance. The gas overrun phenomenon does not occur during driving period, which provides method and basis for similar seam in Zhangji mine and Huainan mining area with same driving problems.