Table 3 Parameters of silica RHT model, explosives, air, plugging materials.

From: Optimization of large-diameter deep-hole stope blasting technology based on numerical simulation: a case study of the Dongguashan copper mine

Material type

Parameters

ρ0/kg*m-3

G/GPa

εpsf

B0

B1

T1/GPa

A

Skarn RHT model

3220

14.11

2.0

1.22

1.22

49.90

2.50

N

fc/GPa

fs*

ft*

Q0

B

T2/GPa

0.729

0.1194

0.18

0.09

0.68

0.0105

0

\({\varepsilon }_{0}^{c}\)/s-1

\({\varepsilon }_{0}^{t}\)/s-1

\({\varepsilon }^{c}\)/s-1

\({\varepsilon }^{t}\)/s-1

βc

βt

\({g}_{c}^{*}\)

3.0 × 10–5

3.0 × 10–6

3.0 × 1025

3.0 × 1025

0.0106

0.0143

0.4

\({g}_{t}^{*}\)

ξ

D1

D2

\({\varepsilon }_{P}^{m}\)

Af

Nf

0.7

0.5

0.04

1

0.015

1.62

0.6

A1

A2

A3

Pel/MPa

Pco/GPa

Np

α0

49.90

60.88

11.48

79.6

6.0

3.0

1.0

Explosive materials

ρ (kg/m3)

D (m/s)

Pc-j/GPa

A

B

R1

R2

1200

6930

7.4

371

7.43

4.15

0.95

ω

E0

     

0.30

7.0

     

Air material

ρ(kg/m3)

C0

C1

C2

C3

C4

C5

1.293

0

0

0

0

0.4

0.4

C6

E0/GPa

     

0

0.025

     

Blocking material

Material density

ρ/kg·m3

Elastic modulus/GPa

Poisson’s ratio

Yield strength/MPa

   

1350

1.18

0.38

0.75