本文主要是总结归纳在深刻吸取潘二矿井下采空区封闭墙前瓦斯熏人事故血的教

After the paper is summarized in the profound lessons learned plucked Pan two mine empty area enclosed front wall Gas smoked accident blood through a closed wall sealing effect on the mined-out area classification comparison, the original mined-out area closed technology on the basis to optimize the quality of mined-out area closed system to prevent the front wall of the closed gas gauge, fully embodies the "prevention first, combining prevention with control," the idea for the tunnel roof and floor broken, rock conditions more complicated, stress concentration, resulting in mined-out permanent closure wall area difficult to maintain, to solve the gas build-up before the closure wall channel, reducing Gob, and ensure a closed wall around the top of the roadway, the overall strength and integrity of the floor, having regard to prevent gas and spontaneous combustion of a fundamental reality significance.

This paper is mainly summarized in the deep lying pan two mine under the closed wall closed wall before the gas smoke accident blood lessons, through the mining area closed wall closed effect of the classification comparison, in the original mining area closed technology, optimize the quality of the closed system in the mining area, prevent the closure wall before the gas limit, fully reflect "in order to prevent the main, prevention and control combined "The idea, for the roadway roof, bottom plate broken, the surrounding rock conditions are more complex, stress concentration, resulting in the permanent closure of the area is difficult to maintain, fundamentally solve the closed wall before the gas accumulation channel, reduce the leak of the air area, to ensure the closed wall and the surrounding laneway roof, bottom plate of the overall strength and integrity, In the prevention and control of gas and spontaneous combustion of fire has a practical significance.

This paper mainly sums up and sums up the lessons learned from the gas fumigating in front of the closed wall of the goaf under Pan2 coal mine, through the classification and comparison of the closed effect of the closed wall of the goaf, on the basis of the original closed technology of the goaf, optimizes the quality of the closed system of the goaf, prevents the gas in front of the closed wall from exceeding the limit, fully embodies the idea of "prevention first, prevention combined" For the broken roof and floor of the roadway, the surrounding rock conditions are complex and the stress is concentrated, which makes it difficult to maintain the permanent closed wall in the goaf. It is of practical significance to fundamentally solve the gas accumulation channel in front of the closed wall, reduce the air leakage in the goaf, ensure the overall strength and integrity of the closed wall and the surrounding roof and floor of the roadway, and prevent gas and spontaneous combustion.<br>