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在综述基准面基本概念的基础上,从泥沙运动力学角度出发建立了正弦曲线型地层基准面旋回的一维定量理论模型。模型通过沉降速率、基准面旋回曲线、沉积物供给速率曲线以及泥砂的平均粒径和密度等基本属性数据,给出了地层表面高度变化的数学表达式,模拟了地层表面的变化,实现了对于地层的沉积、侵蚀和饥饿沉积的模拟,建立和恢复了地层样式。最后通过起始地层面高度高于、低于和等于基准面三种情况下的稳定地层样式对比,得出了由突发、短暂的地层沉降所打破的旋回沉积平衡易于恢复;而因地层抬升偏离的平衡,其恢复时间相对较长。
Based on the review of the basic concepts of datum, a one-dimensional quantitative theoretical model of the gyration of a sinusoid-type formation datum was established from the perspective of sediment movement mechanics. The model gives the mathematical expression of the change of the surface height through the settlement rate, the reference surface rotation curve, the sediment supply rate curve and the average particle size and density of the sediment. It simulates the change of the surface of the formation, Stratotype deposition, erosion and hunger deposition simulation, the establishment and restoration of stratigraphic patterns. Finally, by comparing the stratotypes of the three types of ground where the height of the initial formation is above, below and equal to the reference surface, it is concluded that the cyclone sedimentary balance broken by sudden and temporary formation subsidence is easy to recover. However, Deviation from the balance, the recovery time is relatively long.