Title: Investigation on Failure and Water Inrush from Roof of 5th Coal Seam in Fangezhuang Coal Mine
Abstract:Based on researching into hydro-geological conditions of 5th coal seam roof in Fangezhuang coal mine,the author applies the coupling system of flow solid in rock failure process analysis to simulate t...Based on researching into hydro-geological conditions of 5th coal seam roof in Fangezhuang coal mine,the author applies the coupling system of flow solid in rock failure process analysis to simulate the whole process of damage and failure about 5th coal seam roof.With the analysis of damage distribution,stress and the roof seepage curves,the evolution mechanism of the process from water-resisting strata to inrush pathway about the roof of complete mudstone under the condition of mining disturbance and hydraulic driving is clearly revealed.Meanwhile,the relationship between the thickness of mudstone and roof water inrush are discussed.The results show that large area of tensile stress on the proof and the stress concentration is the key factor of water inrush of from roof.The strength of water-resisting roof layer is not enough to protect the coal seam and the roof of mudstone should be reinforced or the safety pillars should be left.Read More
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 2
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