大庆石油地质与开发

2001, (03) 25-27+75

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水下扇沉积过程数学模拟方法
MATHEMATIC SIMULATION METHOD OF UNDER-WATER FAN SEDIMENTARY PROCESS

赵永军,王平在,张卫海
ZHAO Yong jun\+1; WANG Ping zai\+1; ZHANG Wei hai\+2 (1. Chinese Mine University;

摘要(Abstract):

在水下扇沉积概念模型的基础上 ,使用Fick定律描述不同粒度级的陆源碎屑物质浓度在湖盆内随时间的扩散、分布范围 ,综合考虑基准面、湖盆沉降及水进、水退等因素对水下扇沉积的控制作用 ,确定了描述物质搬运及沉积的数学模型 ,提出了一种对水下扇沉积过程的模拟思路和方法 ,计算出平面各模拟网格中不同粒度级物质的沉积厚度。最后指出 ,模拟参数的确定与实际资料之间还缺乏必要的相关性 ,沉积过程数学模拟的关键在于建立合理的物质搬运和沉积模型 ,应尽可能考虑各种因素的综合影响。
Basing on the under water fan sedimentation concept model, this paper uses Fick Law to describe the diffusion and distribution scope of terrigenous detrital material concentration of different grain size with time in lake basin. It considers comprehensively the controlling effect of base level, lake basin subsiding, progression and regression on under water fan sedimentation and determines a mathematical model for describing matter transportation and sedimentation. It proposes a simulation thought and method for under water fan sedimentary process and calculates the sedimentary thickness of different grain sized matter in the simulated grids areally.

关键词(KeyWords): 水下扇;沉积过程;模拟;物质搬运;概念模型;数学模型
under water fan; sedimentary process; simulation; matter transportation; conceptual model; mathematical model

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 赵永军,王平在,张卫海
ZHAO Yong jun\+1; WANG Ping zai\+1; ZHANG Wei hai\+2 (1. Chinese Mine University;

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