発はっ破ぱ

noun

explosive blast; blasting

Refers to controlled explosive blasting used in construction, mining, demolition, and similar industrial contexts.

• トンネル工こう事じで発はっ破ぱが行おこなわれた。

  Blasting was carried out during the tunnel construction.

• 発はっ破ぱ作さ業ぎょう中ちゅうは立たち入いり禁きん止しです。

  No entry during blasting operations.