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Coal Seam Group Protection Layer Face Causes and Characteristics Analysis of Dynamic Phenomenon

Author:
Zhang, Yong Jiang   Meng, Xian Zheng   Xu, Zun Yu  


Journal:
Advanced Materials Research


Issue Date:
2012


Abstract(summary):

In Xinji Coal Mine under complicated geological conditions, regional faults. Experimental zone for near coal seam group mining(6-1,7-1,7-2,8 seam), The objective conditions with protective layer. The minefield of soft broken coal seam, Soft layered coal firmness coefficient f= 0.18. In the test area of 210601,210603 6-1 seam protective layer mining face during the period, there were 8 abnormal gas dynamic phenomenon, To the coal mine safety production brought hidden trouble. On the basis of dynamic phenomenon occurring phenomenon, analysis of the dynamic phenomena, combined with the test area actual situation, summed up the 6-1 coal power causes, for guiding the 6-1 safety mining and provide a theoretical basis, has important significance.


Page:
502-505


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