explosive blast; blasting
Refers to controlled explosive blasting used in construction, mining, demolition, and similar industrial contexts.
トンネル工事で発破が行われた。
Blasting was carried out during the tunnel construction.
発
No entry during blasting operations.
Standard kanji spelling for explosive blasting in construction, mining, etc.
Compound of 発 (はつ, 'discharge, set off') and 破 (は, 'break, destroy'), referring to breaking rock or structures by setting off explosives.