Table 1 Summary of grouting drilling arrangement parameters (internal stope).

From: Using physical model test and numerical simulation for revealing the mechanism of stope collapse: a case study

Material type

Particle size (mm)

Density(kg/m3)

Quality (kg)

Quality score(%)

Barite

0.3–0.5.3.5

3800

90.40

71.48

Sand

0.2–0.4.2.4

1150

161.60

15.78

Cement

-

3000

17.50

7.78

Plaster

-

2300

7.00

3.33

Water

-

-

8.57

-

  1. Note: The water consumption is 10% of the mass of the test piece, the density of the test piece is 2700kg/m3, and the density similarity coefficient is 1.
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