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本文依据现代泥炭沼泽资料,探讨富煤地段的形成机理。作者根据地壳沉降速度与泥炭沉积速度的相对大小导出泥炭沼泽演变的地质模型和泥炭沉积厚度的数学模型,得出地壳沉降速度等于或小于泥炭沉积速度是形成厚层泥炭的有利条件的结论。引起水位变化的各种因素满足中心极限定理的Linderberg条件,故水位遵从正态分布。由此得出:存在理想的泥炭分布概率模型正态分布;在集水盆地边缘存在理想的最大概率泥炭带;沉积面坡度大有利于泥炭带的集中。泥炭分布常不呈正态分布的主要原因是陆源物质对沼泽的侵犯。文末还综合运用各主要论点对“岛状成煤”的实质作了剖析。
Based on the information of modern peat bogs, this paper explores the formation mechanism of coal-rich areas. Based on the relative size of crustal sedimentation velocity and peat sedimentation velocity, the author derives the geological model of peat swamp evolution and the mathematical model of peat sediment thickness, and concludes that the crustal sedimentation velocity is equal to or less than peat sedimentation velocity is the favorable condition for forming thick peat. Various factors that cause changes in the water level satisfy the Linderberg condition of the central limit theorem, so the water level follows a normal distribution. It is concluded that there is an ideal distribution of peat distribution probability model; there is an ideal maximum probability peat zone at the edge of catchment; and the gradient of sedimentation surface is favorable for the concentration of peat zone. The peat distribution is often not normal distribution of the main reason is the terrestrial material on the swamp violation. At the end of the article, we also make a comprehensive analysis of the essence of “island coal formation” by comprehensively using the major arguments.