Present Situation, Application, and Development of Simultaneous Extraction of Coal and Gas

The importance of simultaneous extraction of coal and gas and its purport to green exploitation are discussed. The present situation and the theory of this technique as well a some new problems are introduced. Experience of simultaneous extraction of coal and gas in coal mine is analyzed and an example is used to explain the significance of the organic combination of gas drawing underground with coalbed methan exploiting on ground surface. Finally, problems we should pay attention to and the developing way of simultaneous extraction of coal and gas are pointed out.