Features of Jianshanchong Klippe and its Control to Gas Geology at Qingshan Coal Mine, Jiangxi Province

Abstract:

The coal and gas outburst is serious at Qingshan Coal Mine of Jiangxi Province, so it is of significance to research the features of Jianshanchong klippe and its control to gas geology. The research reveals that: Jianshanchong klippe is distributed from the east boundary of Qingshan Coal Mine to No. 45 Exploration Line, its transverse profile is like a funnel while its longitudinal profile is like a wedge, northwest side of the klippe is thicker and deeper while southeast side is thinner and more shallow. Because of the cover and insert of Jianshanchong klippe, the structure of coal-bearing strata is more complex, some secondary folds are formed, and also, the coal seam is changed greatly, the tectonic coal is well developed and the coal seam is suddenly thickening or thinning. Due to the effect of Jianshanchong klippe, the coal and gas outbursts occur in the area of secondary folds, thicker coal seams or tectonic coals. Concerning the prediction of gas geology in deep area, in view of the facts including simpler structure, stable coal seam and decreased thickness, the gas emission rate and the coal and gas outburst will decrease in Fifth and Sixth Mining Level than that in Second and Third Mining Level

• Periodical: Applied Mechanics and Materials (Volume 164)
• Pages: 501-505
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.164.501
• Online since: April 2012
• Authors: Zhi Gen Zhao, Jia Chen, Jia Ping Yan
• Keywords: Coal Outburst, Gas Outburst, Jianshanchong Klippe, Prediction of Gas Geology in Deep Area, Qingshan Coal Mine

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DOI: 10.1016/s1674-5264(09)60168-x