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中文摘要：
基于184个中煤级（镜质组最大反射率Ro,max介于0．65％～2．50％）煤在平衡水条件下的等温吸附实验成果，模拟了中煤级煤的朗格缪尔体积和压力与煤级的关系，建立了不同埋深（温度、压力）条件下不同煤级煤饱和吸附气量量板，探讨了压力和温度对中煤级煤吸附甲烷能力的综合效应，对比分析了中煤级煤吸附特征与低、高煤级煤的差异，提出了中煤级煤吸附气量预测的方法。
英文摘要：
Based on the results of isothermal adsorption experiments on 184 middle-rank coal samples unuer equilibrium moistures （with vitrinite reflectances of between 0.65% and 2.50%）, this study simulates the relationship between Langmuir volume and Langmuir pressure in the middle-rank coal; establishes the master curve of saturated adsorption methane content of different coal rank under various buried depths （temperature and pressure）; discusses the integrated effect of middle-rank coal adsorption and the difference of isothermal adsorption characteristics between middle-rank and low, high rank coals. In the end, this study proposes a prediction method for adsorption methane content of middle-rank coal.
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