关键词: 附加质量法, 传统连接, 磁铁连接, 对比

Abstract: Additional mass method is fast, accurate and non-destructive for density measurement of rockfill body. Combined with the case of Liyuan hydropower station, the connection between detector and additional mass block is improved, in which magnetic connection is adopted instead of thread connection. In this way, efficiency is enhanced and the instruments are well protected. The practical application shows that the magnetic connection doesn't exert adverse influence on collection signal and the test result is not effected.

Key words: additional mass method, traditional connection, magnetic connection, comparison