砂さ防ぼうダム

noun

erosion control dam; debris barrier

Civil engineering term for a dam built to prevent erosion and control debris flows, often in mountainous areas.

• この地ち域いきには土ど砂しゃ災さい害がいを防ふせぐために多おおくの砂さ防ぼうダムが設せっ置ちされている。

  Many erosion control dams have been installed in this area to prevent sediment disasters.

• 砂さ防ぼうダムは土ど石せき流りゅうの勢いきおいを弱よわめる役やく割わりを果はたす。

  Erosion control dams serve to reduce the force of debris flows.