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从褐煤前有机质的演化特征出发，以我国煤炭分析实测数据及实验模拟分析数据为基础，采用数值模拟优化求解方法，对我国煤岩褐煤前演化阶段的产气特征进行了定性、定量计算。结果表明，该阶段煤岩的产气组成和产气率为随样品特征而变。这项研究结束了在我国煤成气评价中借用国外同类数据的历史，为我国丰富、复杂的煤岩演化特征研究及成气量的准确评价奠定了基础，具有较高的实际应用价值。
Based on the evolution characteristics of organic matter before lignite, based on the data of coal analysis and experimental simulation in our country, the gas evolution characteristics of coal and rock during the evolution of lignite in coal and rock are qualitatively and quantitatively calculated by numerical simulation and optimization method. The results show that the gas composition and gas production rate of coal and rock in this stage vary with the characteristics of the sample. This study concludes the history of borrowing similar foreign data in the evaluation of coal-to-gas in our country, which lays the foundation for the study of the rich and complicated coal-rock evolution characteristics and the accurate assessment of gas-forming capacity in our country, and has a high practical value.