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The results show that coal and gas outburst has the characteristics of control structure, segmentedvariability and uneven regional distribution, affected and controlled by the geological structure and stress intime and space. The examples of coal and gas outburst show that most of coal and gas outbursts occur nearfault, indicating fault has obvious controls on coal and gas outburst. The existence of fault gouge andaccompanying crack in the coal petrography near fault is conducive to the existing and migration of gas. Thecompression and stretching produced during the formation of fault promotes the formation of structural coal,which are prepared power base for coal and gas outburst. Fault with material and power base promotes thefrequent occurrence of coal and gas outburst. This regularity understanding has important theoretical andpractical significance to reveal the occurrence mechanism and regional forecast of coal and gas outburst.

KEYWORDS

coal and gas outburst; control action; geological structure; fault

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Autor: Ying Chen

Fuente: http://www.scirp.org/



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