さんたいほうかい 山体崩壊 LinksSentence search for 山体崩壊Sentence search for さんたいほうかいKanji details for 山, 体, 崩 and 壊Edit in JMdict Noun1. debris avalanche (of a volcano); collapse of volcanic edifice; sector collapseGeology Discussions Log in to talk about this word.