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一、河流分类原则和分类表 1.分类河流的原则——场地作用、塑造作用和稳定性。 从总体来说,决定河流演变特性的首要条件是当地边界条件,其次是来水来沙条件。 当地边界条件的主要内容是河床组成物——河谷地质和构造,以及河谷比降。流经岩石裸露的山区河流,不会有平原冲积河流那样的冲淤变形特点。当地边界条件为河流的演变和发展提供了基本场地,因此可称之为影响河流性质的场地作用。
First, the principles and classification of rivers classification 1. The principle of classification of rivers - the role of the site, shaping the role and stability. In general, the primary conditions that determine the evolution of a river are the local boundary conditions, followed by the incoming and outgoing water conditions. The main contents of the local boundary conditions are the riverbed composition - the geological and structural properties of the valley, and the river valley ratio. Flowing through the rocky bare mountain river, there will be no scouring and silting deformation like the alluvial plain in the plain. The local boundary conditions provide the basic site for the evolution and development of the river and can therefore be referred to as site effects that affect the nature of the river.