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煤与煤层气协调开发机制研究

Study on Coordinative Development Mechanism of Coal and Coalbed Methane

  • 摘要: 为了更好地推广煤与煤层气协调开发技术,以实现煤与煤层气的协调开发,通过对油气重大专项3个示范矿区的煤层气抽采技术、采掘接续、开采过程中区域划分以及各个阶段所允许的最大煤层气含量的研究,初步建立了煤与煤层气协调开发机制。研究认为:根据各个矿区地质条件的不同,可划分为3个或4个区域,分阶段进行抽采和开采接续;建立了根据每个阶段的回采或掘进速度、风量等参数确定每个阶段的煤层气最大安全允许含量的公式;根据每个阶段的抽采技术和相关参数,可确定每个区域的合理抽采时间,从而合理安排采掘计划,最终实现采煤与采气在时间、空间上的协调;建立了3个示范矿区所代表典型地质条件下的协调开发机制。

     

    Abstract: In order to better promote the coordinative development technology of coal and coalbed methane and to realize the coordinative development of the coal and coalbed methane, with the coalbed methane drainage technology, the mining and driving continued and a regional division in the mining process of the three demo mining areas in the oil and gas major special project and the study on the max seam content allowed at each stage, the coordinative development mechanism of the co al and coalbed methane was preliminarily established.The study hold that according to the different geological condition of each mining area, three or four regions could be divided and a gas drainage and coal mining could be continuously conducted in stages. According to the mining or driving speed, ventilation quantity and other para meters at each stage, the formula to determine the max safety allowed gas content of the seam at each stage was established. According to the gas drainage technolog y and related parameter at each stage, the rational gas drainage time of each region would be determined, thus the rational mining and driving schedule could be arran ged and finally the coal mining and gas drainage could be realized coordinatively in time and space. The coordinative development mechanism of the three demo minin g areas was established under the typical geological condition.

     

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