前言 众所周知,旋涡流现象是在自然界中,能够直接观察到的一种客观普遍存在的现象,如江河海洋中的“旋涡流”,空气中的气流——大风形成的“旋风”。这些现象与规律都已在流体力学及空气动力学中,有较详细的研究与论述。也是人们所熟知的现象。如农夫所用的选米筛子,靠旋转进行分离、分选、聚集的,就是此原理最早的应用,及现代化的洗衣机等。 既然客观上存在着这样一种自然现象,它势必就有它的功能与作用,而它的这种能够作功的功能与作用,正是沉积地质学中,一个重要研究领域,也是开拓找矿领域的一个新方面。要研究沉积学,必须先研究形成沉积岩的水动力学条件,水动力的不同运动方式与功能,对沉积物起搬移,搬运、分离、分选、聚集(捕俘)等作用。研究液流运动方式所处不同的阶段,地理位置,水流方向、风向的变化,它将产生不同的沉积结果。对不同的运动方式,形 Preface As we all know, whirlpool phenomenon is an objective and ubiquitous phenomenon that can be directly observed in nature, such as the “vortex” in rivers and oceans and the “whirlwind” formed by strong wind in the air. These phenomena and laws have been in fluid mechanics and aerodynamics, there is a more detailed study and discussion. It is also a well-known phenomenon. Such as the farmer’s selection of rice sieve, by rotating the separation, sorting, aggregation, is the earliest application of this principle, and modern washing machines. Since there is such a natural phenomenon objectively, it will inevitably have its function and function, and its function and function of doing the work is precisely one of the important research fields in sedimentary geology, as well as exploring and prospecting A new aspect of the field. To study sedimentology, it is necessary to study the hydrodynamic conditions of forming sedimentary rocks, the different movement modes and functions of hydrodynamics, and the role of sediment removal, handling, separation, sorting and gathering (capturing prisoners). It studies the different stages of flow movement, the geographical location, the direction of flow and the change of wind direction. It will produce different deposition results. For different modes of exercise, shape