1

A B Jl 5 5 5 5

6 5 2 5 1517 5 3 6 B5 5 m 5

= 5 m 1 3 6 5 Jl 5 5

6 R 5 5

6 R 5A B 253 m No.1

m Jl 5 5

m

Jl 5 = ml6 No.1 5 l

5No.1l 5

5 l 5 m

5 m

ml6

2

l

3

1l

2

4

5 4

4

5 5 om 5

l l 5 6 5

5 l ml6 100260m 5 160m l6 5160m

5 Jl = ml6 3 4

5 5 l ml

o li6 J 5 m 5 m

l (Blast-curve) 5 m l6 4 ii

l 5 6

l m/J1/3

l 5 1/3 Jl o l Hopkinsl6

4 l

5 l5J o ml

1kPa Jl iii5 160m Jl 5 1kPa=l 0.4m/J1/3 160m 3 Jl 5

l l6 Jl 5

(160/0.4)3=64×106 [J] (1) l6 J 5 4 5 R Jl 5

l6R 5 m 64MJ 5 l = 8 l

6 5 = m

l6 iBaker,W.E.(1973).Explosionsinair.Austin,TX:UniversityofTexasPress. ii p156Table6.3 iii http://staff .aist.go.jp/n-matsunaga/damage.htm

3

4 4

45kJ/giv K5

3.4g/gv l 5 5

Jl 13kJ/g = 6 5

5 Jl 13.03kJ/gvi 5 l6 5

m 64MJ 5 m Jl 5

64×106/(13×103)=4.9×103 (2)

4.9kg l6 5Boyle-Charles V=nRT/P 5

T=3.8C=276.95K5 P=1021.7hPa 54.9kg 32 ml nJl 5 V l6

! = #.%×'()

*+ ×8.31× +/0.%1'(+'./×'(2 = 3.45 (3)

5 K % /0. l6 10. l 5

m % /% ml % /% 5 l

l6

m 16m3 5 m 5 5 Km

5 6 5

l l 5

l m l6 R 5 l

(0.1 ) l 5 6 5

m Jm 5 K5 m

6 5 5

6 5 l 5 ml6

. 2 4

3 .

5B l6 • • • • • m 5 5 mK5

= ml6 5 5

B 4 6 5

m m 5 =K5

= ml6 5 ml

Jm l 5 5 Jm 5 K

l Km l K l6 5

m 6

iv = v CH2 51.5O2 Jl 5 48 14 ml viNIST Special Publication 958 pp.280-282(http://nvl.nist.gov/pub/nistpubs/sp958-lide/280-282.pdf)

4

5 l 5 = ml6 B 4 4

5 = ml5 m

58 6 R

l6 5 Kl 5 5

5 5 5 Jl l6 5 5 J

l 5 5 5 J l6

R 5 10 25mJ5 60 70g/m35 38µmm l6

1 5 30L l

6 5JISZ8817:2002 “ ” 2l 30L 6 5 30L

5 5

= Jl 10kJ l l6

5 2 6

5 5 l6

5 541×(0.03)1/3=168 l6 8

(NIIS-TR-No38) A.3 5 m

6 m m 5

5 l l6

1 30L l

[g/m3]

[MPa]

[102kPa/s]

[ms] 250 0.59 214 70 500 0.82 472 52 750 0.85 529 41

1,000 0.82 486 37 1,250 0.77 541 37

5 5 5 5

ml6 5 4 5

5 m Jl R ml 5

= ml 5

K m 6 5 5

5 1 6 5 l

l 5 51.1.3 5J o m3

5 l = ml6 4 3 1

70g/m3 m 5 l 5

5 kg = ml6

520kg 5 5

=l l6 5 l l 5

200kg 5 J

l6 5 m3 l 5

/ 6 5 L 5

mK5 Jl

5

l6 5 l lvii6 m 5 5 5

6 5

5 5 5

6 5 5

5 l6 5

m 6 5 5 B A C

6 5 5 5 l ml6

m 5 Jl 5 Jl

= ml6

5 C

5 5 l

l 5 = ml62003 129 v v

5 6 38 5 CSB (Chemical Safety and Hazard Investigation Board) viii m 5

l l6 5 m l 5

m K5B 5 5 = m5

l = ml6 4

5 5 l

Jl 5 = ml R 5 5

6 D m 5

om l 5 l6 5J

viiLarge-ScaleDustExplosionExperiments toDetermine theEffectsof ScalingonExplosionParameters, Combustionand

Flame89,pp.320-332viii http://www.chemsafety.gov/index.cfm?folder=completedinvestigations&page=info&INVID=34

6

61.95 1,550kg 5K 66.75 1,210kg 5L 6.0 300kgm 5 40 60 l m l6

B 4

5 2 J6

105.3µm 6 (MIE) R 73µm 10mJ

30mJ 5 Jl 6

m l 2054mJ 6

R 3.8×1013Ω·m 5 3 J ix 8

m5 l 6 5 5

l6

2

D50[µm] [mJ] [Ω·m]*

105.3 10 30 3.8×1013

*: 1,000V 1

3 [kV] [Ω·m] [Ω]

[0.1 ] 108 1010

[0.1 1] 108 1010 1010 1012 [1 10] 1010 1012 1012 1014 [10 ] 1012 1014

1)

CCD 6 J 5 6

6 CCD-

2)

LDSA-1400A 5 7 5

ix

5p.515 (1988)

7

300mm5 2.0 5 6 5

20±3C5 10±3% 24 6 8 J6 D50 105.3µm 5D10 44.95µm5D50 105.3µm5D90

189.4µm 6

7 LDSA-1400A

8 l (LDAWin1.215Drytype)

3) 5 9 J 6

5 5

= Jl l6

9 (MIKE-3)

0 50 100 150 200 250 3000

5

10

15

20

µm

0

20

40

60

80

100

8

10

73µm 6

5 24 5 20C 6 10J6 m MIE 10mJ MIE 30mJ l o l6 4)

26±2C5 10±3% 5 12 J

11 6 K 5 1,000V 16 3.8×1012Ω·m 5

8 3 ml6

11

12

9

5)

50 6

m 10016.5µC/kg 5 22.9µC/kg 6 m

5 l = ml. 3 . 4

B m 6

TREK model 6645 R8240A 6 1)

5 13 65.6×1012Ω5 l 6

13 m

2)

5 6 3.5mm5 10mm5 25mm 2 525mm 25mm

Jl 14 6 1,000V 5×1013Ω 5

8 ml 6

14

10

B 1 . 4

5 m 58 6

m l 6

5 10mm5 25mm 2 525mm25mm Jl 15 61,000V 1.16×1011Ω5 8 ml 6

15 B 4

5kg l 6

15±2C5 55±3 6 1000mm×1000mm×5mm 5 5

6 l 16 J6

60%5 40% 5 6

5 5 m l m

l l6 5

R 6 17 J6

l-2.2kV 6

l m = ml6

(A) (B) (C) (D)

l

11

17

R 5B 3 l = m

l6 R 51.2.1 = ml6 l 5 4 J 6 5 5

l m 5

64 m 5

5 6No.1K5

6 ml R 5

6 Km m 5 m

= m 6

m 5 m l

5 R 6 55.6×1012Ω

ml6 5×1013Ω 5 3ml l6

6

3.8×1013Ω·m 5

l 6 m l 5

5 60 70g/m3

m = ml6

20mJ5 l 150pF Jl 5 l

Vc = ml6

!5 = #(×'(6)'1(×'(672 = 16.3×10* =16.3kV (4)

16.3kV l 5 l l6

5kg -2.2kV 6

20kg 5 5

20 om 6

-10kV = = ml 5

12

= l6

5 l l l6 5 l Km

5 l 5 Jl 5

Jl 6 5 l l 5

R 6 5 l m5

5 l

l ml6

4

l ml6

10 30mJ 5 Jl l6

5 l 5

l6

4

l

l

m l6

l6

m 6 (1)

m 6

(2) No.1m 6

(3) l

m 5 l

5 l

oml6

om 5

l ml

= ml6

m l

Jl 5

= m

l6

= ml6

m

Jl

5

l6

l6

l6

(2) 5

= ml6

m

= ml6

l6

13

1) Jl6 2) 5 x 108Ω Jl6 Jl

Jl6 5 l

l 5 l6 3) 5 Jl6 ml6 2

5 m

Jl6 5 Jl

l6 5 oml

l l6

Jl Jl 5 m

Jl6 l 8 12% m 5

5% xi Jl6 5 5

Jl 5 l6 3 5

5 5 Jl6 4

5 Jl 5

l6

x

6xi 5p.395 (1988)