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在研究我国部分含煤区的煤层甲烷资源评价资料时,发现其中对煤层甲烷资料的分析、甲烷资源量的计算和甲烷含量图的制作这几个基本问题的处理上存在着较大差异,有必要进行专题研究,以使评价标准趋于统一,评价结果真正成为资源开发的决策依据。在对淮南煤田西部煤层甲烷资源的研究中,就上述问题进行了讨论并获得以下认识:①在分析煤层甲烷资料时,必须依据在煤炭资源地质勘探阶段使用不同方法采集的瓦斯煤样原始测试成果,才能进行有效甲烷资料的组构;②为使计算的煤层甲烷资源量更趋合于实际,应该客观地确定和选取煤炭储量与煤层甲烷含量这两个基本参数;③编制的煤层甲烷含量图应采取含量—深度关系趋势图这一间接的表现形式,所用甲烷含量的基态为可燃基。
When studying the coalbed methane resource assessment data of some coal-bearing areas in China, it is found that there are big differences among them in dealing with the basic problems such as the analysis of methane data of coal seam, the calculation of methane resources, and the production of methane content map Necessary for special studies to make the evaluation criteria tend to be unified, the evaluation results truly become the basis for the decision-making of resource development. In the study of methane resources in the western coalbed of Huainan coalfield, the above problems were discussed and the following recognitions were obtained: (1) In the analysis of coalbed methane data, the results of the original coal gas samples collected using different methods during the geological exploration of coal resources must be taken , So as to make the structure of effective methane data more effective. (2) In order to make the calculated amount of methane in coal seam more practical, the two basic parameters of coal reserves and coalbed methane content should be objectively determined and selected. The indirect form of the content-depth relationship trend graph should be used, with the ground state of the methane content used being a flammable radical.