Transcription of 音響管を用いたトンネル発破消音 ... - uit.gr.jp
1 1 [1] [2] 2 1 1/4 ( ) ( ) 2 1.
2 1/4 X 0 1/4 2/4 3/4 1 3 4 1m 1m ( 2. 4 10 m 3 ( ) ( ) 7 m ) 6 48 24 1/32 20 63Hz (1/3 )
3 1 3 [3] 5 6 2 450m 7 P2 P4 6 8 1 [Hz] 63 40 36 28 25 20 18 63 45 30 18 [ ] 4 2 2 3 5 442121 0100~120m720~740m 670m10m10m30m30mP1( )P2P3P45m5m 5. 2. 6. (P5) 450m 110 30kg210 9kg310 22kg110 45kg210 25kg310 34kg 720m 740mDICIIDS DS 9 (LSmax) 20 63Hz 15 23dB 25Hz m 3 15dB [1] , 2004,6.
4 [2] ASJ CN-Model2007 , 64, 229-260 (2008). [3] N-2012-29, 2012. [4] ( ) pp185-188, 2005. [5] ( ) pp819-820, 2007. 8 7 -10 0 10 20 30 40 4 8 16 63 125 (dB)1/3 (Hz) ( ) Lmax Lmax 9 LSmaxP5 LSmax ( ) 15 23dB
