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潼关以下库区冲淤机理分析
引用本文:王培道,张根广. 潼关以下库区冲淤机理分析[J]. 水资源与水工程学报, 2007, 18(6): 62-64
作者姓名:王培道  张根广
作者单位:1. 运城市夹马口引洪管理局,山西,运城,044100
2. 西北农林科技大学西北水科所,陕西,杨凌,71210
摘    要:通过对潼关以下库区冲淤机理分析发现,潼关-古夺河段的冲淤变化与古夺-大禹渡冲淤变化密切相关,古夺-大禹渡河段发生溯源冲淤变化是潼关-古夺河段发生沿程冲淤变化的前提和基础。若古夺-大禹渡河段发生溯源冲刷,则潼关-古夺河段发生沿程冲刷;若古夺-大禹渡河段发生溯源淤积,则潼关-古夺河段发生沿程淤积。大禹渡河段之所以常常发生溯源冲淤的原因在于,一年有5个月的运行水位回水末端均在大禹渡以上,造成大禹渡河段成为溯源冲淤的侵蚀基准面。

关 键 词:溯源淤积  沿程淤积  淤积机理
文章编号:1672-643X(2007)06-0062-03
收稿时间:2006-05-28
修稿时间:2007-06-30

Mechnism analysis for the erosion and deposition in downstream of Tongguan of reservoir area
WANG Pei-dao,ZHANG Gen-guang. Mechnism analysis for the erosion and deposition in downstream of Tongguan of reservoir area[J]. Journal of water resources and water engineering, 2007, 18(6): 62-64
Authors:WANG Pei-dao  ZHANG Gen-guang
Abstract:Based on the mechanism analysis for the erosion and deposition in downstream of Tongguan,it is found that riverbed changes in Tongguan-Guduo reaches was close related with the Guduo-Dayudu reches,and the changes in Guduo-Dayudu reches was the precondition for the Tongguan-Guduo reaches.When retrogressive erosion(deposition) occured in Guduo-Dayudu reches,then it will be occured in Tongguan-Guduo reaches.Moreover,the reason that retrogressive erosions often occur in Dayudu reaches is that the Dayudu reaches are the backwater region of the reservoir in almost five moths in a year,which makes the Dayudu reaches to be the erosional datum plane of retrogressive erosion /deposition upstream of the Dayudu reaches.
Keywords:retrogressive deposition  progressive deposition  deposition mechanism
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