THE ROLE OF STONES ON THE RIVER BED STABILITY IN STONY BED RIVERS
THE ROLE OF STONES ON THE RIVER BED STABILITY IN STONY BED RIVERS
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石质河床中石头对河床稳定性的作用
DOI：
10.2208/prohe.52.643
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Tomonori Abe
中科院分区：
文献类型：
--
作者：
S. Fukuoka;K. Osada;Tomonori Abe
在河道整治进展不明显的情况下，河道断面形式在流量、河床坡度和河床物质之间的关系上已趋于动态平衡形式。但由于河道整治工程的进行，河道似乎不满足输沙平衡条件。因此，在河流管理方面出现了许多问题。泥沙运输因大坝而中断，并从河流中移走了大块的河床物质，如石头和砾石。本文描述了在曹干池江野外试验中发现的石质河床河床稳定机制，以及石质河床与砾石河床输沙机制的差异。在此基础上，提出了石质河床河流的坝库冲沙问题和新的河床变化分析方法的必要性。
River cross sectional form had settled in the dynamic equilibrium form at the relationship between discharge, the river bed slope and bed material when river improvement is not progressing so much. But, river channels do not seem to satisfy the equilibrium condition of sediment transport due to river improvement work in progress. As the result, many problems have arisen on river management. Sediment transport became discontinuous by the dam and removing large size of bed materials as stones and gravel from rivers is mentioned. In this study, we describe the bed stabilization mechanism of the stony bed rivers found by the field experiment of the Joganji River and the difference in sediment transport mechanism of the stony bed river and the gravel bed river. Moreover, we insist on the problem on washing out of dam reservoir sediment and the necessity for the new bed variation analysis method in the stony bed rivers.