Abnormal area comprehensive gas control technology in Tiexin Coal Mine
In order to solve the gas problem in the abnormal gas emission area of Tiexin Coal Mine,the fault structure,fold structure and hydrogeological conditions in the abnormal gas emission area of No.9 coal seam were systematically analyzed.The gas occurrence and distribution law of No.9 coal seam and its adjacent No.10 coal seam were studied,and the gas emission amount and gas source during the production of No.9 coal seam were analyzed.Through the analysis,it is found that the gas emitted from the working face of No.9 coal seam in Tiexin Coal Mine mainly comes from the lower adjacent seam No.10 coal seam.Therefore,a comprehensive gas control technology was adopted in a targeted manner,which includes inserting pipes to extract gas from the goaf and pre extracting gas through boreholes in adjacent layers.After the application of this technology,good gas control results were achieved.
abnormal areagas comprehensive controlgoaf extractionadjacent layer pre pumping
万方数据
维普
