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- W2362885123 abstract "In order to master the gas emission law premise to the mining protective seam and gas drainage seam,a research on coal mining method and gas control for the South Wing No.15 seam with potential outburst in basin area of Nanshan Mine was conducted.The research results showed that the average gas emission from the pre-slicing was higher.During the coal mining period,a drainage and mining operation should be conducted with the increased ventilation to prevent and control the gas content over the limitation.The gas emission from the bottom slicing was 73% less than the top slicing.The fully mechanized longwall caving mining method can be applied.During the mining operation in the high gas outburst seam,a gas pre-drainage technology combined with the top slicing protective seam mining technology shall be applied in order to eliminate the gas outburst danger occurred in the bottom slicing.The expended coal mining face could be excavated with fully mechanized longwall top coal caving mining method.With the pre-long period gas drainage in the outburst dangerous area,the danger of the outburst could be eliminated,the layout and construction of the production system could be simplified and the production cost could be reduced.The application of the longwall top coal caving mining technology can reduce the gateway driving cost.With the application of the available two gateways for the whole seam mining,the economic benefit will be more prominent." @default.
- W2362885123 created "2016-06-24" @default.
- W2362885123 creator A5069599551 @default.
- W2362885123 date "2008-01-01" @default.
- W2362885123 modified "2023-09-28" @default.
- W2362885123 title "Gas emission law of protective seam mining and fully mechanized longwall mining face with gas drainage before coal mining" @default.
- W2362885123 hasPublicationYear "2008" @default.
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