| 摘要 |
The invention relates to a coal mine through which coal gas can be produced directly from coal seam and a coal gas production method through the mine. The mine comprises a ventilation system having an air ventilation shaft and an air ventilation tunnel, a coal gas transporting system having a coal gas passage and an air injecting system having a gasification passage. The gasification passage forms "an underground gasification oven". The method comprises following steps: drilling a plurality of bores towards the coal gas passage from the air ventilation passage in coal seam; packing these bores after inserting air injecting pipes into them; igniting coal seam in the gasification passage at the same time injecting gasidants to the gasification passage through the air injecting pipe; sequentially injecting air into gasification passage from air injecting pipes in adjacent bores to obtain continuous gas production. Therefore, technical and environment problems associated with the "underground coal gasification" can be solved with low cost and difficulties in producing coal directly from underground seam can be avoided. |
