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本文以常愿寺河流域为对象进行了模拟研究。首先对常愿寺河的河床变动实际情况进行了研究,并将其作为研究对象,对河床变化模拟计算的适应性进行了研究。根据这个模拟计算,依砂防设施类型的不同,对拦沙坝的效果差异进行计算,并对砂防设施的机能及其和长期变动河道的关系进行了研究。1 常愿寺河概况常愿寺河河道总长为56km,流域面积368km~2,河床平均比降约1/30,是日本屈指町数的急流荒废河床之一。以距河口21.5km的横江砂防坝为界,其下游直属河川事业管理,上游直属砂防事业施工区域。
In this paper, the Changyuankanghe River Basin is simulated. First of all, this paper researches the actual situation of riverbed change in Changyuansi River, and takes it as the research object to study the adaptability of riverbed simulation. According to this simulation calculation, according to the different types of sand prevention and control facilities, the difference of effect of sand bar protection is calculated, and the function of sand prevention and control facilities and its relationship with the long-term change of channel are studied. 1 Changyi Temple River Overview Changyi Temple River total length of 56km, the basin area of 368km ~ 2, the average bed down about 1/30, is the number of Japanese Qu-cho one of the abandoned river bed. With 21.5km away from the mouth of the river sand sand dam as a boundary, its lower reaches directly under the cause of management of the river, the sandstone anti-business directly under the construction area.