CONTROL FACTORS ON THE OCCURRENCE OF COALBED METHANE IN NINGWU COAL FIELD, SHANXI PROVINCE
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Abstract
In Ningwu coal-bearing reaion,the strengths of structural stress suffered by various structure positions and coal seams are distinct under the transformations of Indosinian and Yanshanian movements.The transformed degrees are also different,therefore,the main factors controlling the occurrence of coalbed methane are obviously not alike.
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