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单词 Fuse plug
释义

Fuse plug

英语百科

Fuse plug

An emergency spillway with fuse plug (bottom) and an auxiliary ogee spillway (top) at New Waddell Dam

A fuse plug is a collapsible dam installed on spillways in dams to increase the dam's capacity.

The principle behind the fuse plug is that the majority of water that overflows a dam's spillway can be safely dammed except in high flood conditions. The fuse plug may be a sand-filled container, a steel structure or a concrete block. Under normal flow conditions the water will spill over the fuse plug and down the spillway. In high flood conditions, where the water velocity may be so high that the dam itself may be put in danger, the fuse plug simply washes away, and the flood waters safely spill over the dam.

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