江戸時代初頭における煤鼻(裾花)川の開発形態  [in Japanese] A STUDY ON THE DEVELOPMENT OF SUSOBANA RIVER AT THE EDO PERIOD BEGINNING  [in Japanese]

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裾花川末流部は,近世初頭に松平忠輝と家臣団により大規模な河川改修が行われているが,これは口碑伝承のみで確かな史料が存在しない.近年の都市開発により,現在の裾花川流域には慶長期の河川構造を確認できる痕跡は少ない.本稿では,地元に存在する江戸時代の古文書と,大正末期の長野市全図で確認できる河道の姿に明治初期の行政文書を加味して,帰納法的に慶長期における煤鼻川開発初期の形態の同定を試みた.その結果,煤鼻川は二線堤構造や霞堤を配置した甲州流の治水技術の流れを汲む工法が用いられていて,甲州系代官衆らにより進められた開発であったと推定できる.同時に旧煤鼻川氾濫地帯に北国街道丹波島・善光寺宿ルートが開設されるともに窪寺堰が開鑿されていることから,これらは治水・利水・街道整備を含めた総合開発であった.

 As for the downstream area of Susobana River, large-scale river development was done by the vassalry with Tadateru Matsudaira at the Edo period beginning. However, as for this, the written historical records do not exist only with a few traditions. With the urban development in recent years, there are few traces that the river structure in Keicho period can be confirmed and investigated in the present Susobana River basin. In this paper, by inductive method it is tried to identify the early development mode of Susobana River in Keicho age on the basis of induction analysis of some obtained materials. These materials include the documents in the locally existing Edo period, the Nagano City map in Taisho era with that the figure of the river channel can be checked, the public administration documents in the early years of Meiji era which is taken into consideration with the map and added to the figure analysis. As a result, it is possible to estimate that the development of Susobana River was proceeded by the government officials from Koshu with the method of construction which is descended from the riparian work technology of the Koshu style to have arranged the double levee structure and the open levee structure used. Because together Hokkoku-Kaido Tanbajima-Zenkojijyuku route were constructed in the old River Susobana's flood zone, Kubodera irrigation was excavated at the same time, these were the comprehensive development which included flood control work, water utilization and a highway construction.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. D2 (Historical Studies in Civil Engineering)

    Journal of Japan Society of Civil Engineers, Ser. D2 (Historical Studies in Civil Engineering) 69(1), 104-115, 2013

    Japan Society of Civil Engineers

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