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METHOD FOR DIGITAL RESTORATION OF HISTORIC MORPHOLOGY OF RIVER

机译:河流历史形态的数字恢复方法

摘要

A method for digital restoration of historic morphology of a river, comprising: selecting, on the basis of the selection of a river segment where the development of an alluvial stream and terraces is complete, a representative cross section of a river segment planned to be recovered; obtaining a sediment core sample by drilling; layering sediments according to physical properties thereof; recording three-dimensional space coordinates of each layer, then performing age determination on each sediment layer, and finally connecting the three-dimensional space coordinates of the sediment layers of equal age in different sediment cores on the same section in general drawing software by using lines, wherein the obtained section morphology is river section morphology under the age; and linking the coordinates of all ages in sequence, that is, morphology recovery of the entire section in all history ages is completed, and historic morphology restoration of the entire river segment can be completed after multiple sections are recovered. By means of cross utilization of a geology age measuring technology and a river dynamics section molding principle, the method can be applied to most alluvial river historic morphology restoration, and has important practical value for the study of a river landform evolution process.
机译:一种用于对河流的历史形态进行数字恢复的方法,包括:根据对冲积河流和梯田发育完成的河流段的选择,选择计划恢复的河流段的代表性断面。 ;通过钻孔获得沉积物芯样品;根据其物理性质将沉积物分层记录每一层的三维空间坐标,然后对每个沉积物层进行年龄确定,最后在通用绘图软件中使用线将相同年龄的不同年龄的沉积物层的三维空间坐标连接到同一剖面上,其中,所获得的断面形态为未满年龄的河段断面形态。并依次链接各个年龄段的坐标,即完成了所有历史年龄段整个断面的形态恢复,多个断面恢复后即可完成整个河段的历史形态恢复。该方法通过交叉利用地质年代测量技术和河流动力学断面造型原理,可应用于大多数冲积河流历史形态恢复,对研究河流地貌演化过程具有重要的实用价值。

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