Sabo-logical studies on the self-adjustment of the river channel

要有效地携带Sabo的工作，在贪婪、渠道特征和军事运动的历史必须是明确的。在本研究中，日本中部Oi河地区运动的过程和北海道Saru河的Saru河进行了调查。主要结果汇总如下： 1。正如我们从基线尺度（large space scale）中进行了分析。伊河盆地的特定调节年的体积为2000至6000年（m^3/Km^2/年），而萨鲁河盆地的特定调节年的体积为10至30次。“空间运动的基本特征，OI河和Saru河是相似的。”在Higashigochi实验性洪流的情况下，1982年10月1-3日，在洪水到台风号的河流中沉积了150，000 m ^3的部分。自那时以来，被使用的Riverbed和被Riverbed的人已经恢复了它的格式配置文件，而且通道也几乎恢复了它的格式形状，并从那里恢复过来。而且似乎也是这样，这种变化发生在萨鲁河上。根据上面的描述，它似乎是一个自然扭曲的河流调整其信道斜率和信道几何学，以达到赋予外部约束的动态均衡条件，如水和侧放电、山谷斜率和宽度、地质约束等。在大沉积后的筛选过程中，每个单位峰值释放量的变化可以通过S（t）=- exp（- t）表示，其中S是每个单位峰值释放量的变化量， t是洪水的顺序，其中表示为1、2、...，或是常量。

To carry out Sabo works effectively, the felation among the grequency, the channel characteristics and the history of sediment movement must be understood clearly. In this study, the process of sediment movement of the Oi river in central Japan and of the Saru River in Hokkaido has been investigated.The main results are summarized as follows: 1. As we made an analysis of sediment yield from the viewpoint of the basin scale(large space scale). The volume of specific sediment yield of the oi river basin was 2000 to 6000 (m^3/Km^2/year), which was 10 to 30 times the volume of specific sediment yield of the Saru river basin.2. The basic caracteristics of sdiment movement both the OI river and the Saru river are similar. In case of Higashigochi experimental torrent, the sediments which exceeded 150,000m^3in volume deposited on the riverbed of the observation reach by the flood due to typhoon no, 10, on august 1-3,1982. Since then, rapid erosion of the riverbed ensued and the riverbed has been recovering its former profile, and also the channnel has been nearly regaining its former shape and from. And also it seems that thus changes happen in the Saru river.3. As described above, it seems that a natural torrential river adjusts its channel slope and channel geometry to approach a dynamic equilibrium condition for given external constraints, such as water and sediment discharge, valley slope and width, geological constraints and others.4. In the scouring process after large deposition, changes of the volume of riverbed variation per unit peak discharge can be expressed by the equation of S(t)=- exp(- t), where S is the volume of riverbed variation per unit peak discharge, t is the order of flood occurrence which is expressed as 1,2,・・・・, or is the constant.