Barrage method - Enkouho

Japanese: 堰閘法 - えんこうほう
Barrage method - Enkouho

…The first lock gate in the world was built in China at the end of the 10th century. The method of using lock gates to create a canal is called the barrage method (Figure 2), and this is the common method of canalization today (canals with lock gates are sometimes called gated canals). In the barrage method, the head of a single barrage is about 5 to 15 meters; if the head is greater than this, it is necessary to build multiple lock gates or install a canal lift. …

*Some of the terminology used in reference to the "barrage method" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…世界で最初の閘門は10世紀末に中国で造られた。閘門を使って運河化する方法は堰閘法(図2)と呼ばれており,現代の運河化はこれが一般的な方法である(閘門をもつ運河を有門運河と呼ぶこともある)。堰閘法において,一つの堰による落差は5~15m程度であり,落差がこれより大きいと閘門を多段式に造るか,運河用昇降機(リフト)を備える必要がある。…

※「堰閘法」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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