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The Delft Sand, Clay & Rock Cutting Model, 2019a

The Delft Sand, Clay & Rock Cutting Model, 2019a

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Hyperbaric <strong>Rock</strong> <strong>Cutting</strong> Charts.<br />

X.7 <strong>The</strong> Curling Type of the 120 Degree Blade.<br />

10.0<br />

9.0<br />

8.0<br />

7.0<br />

Flow Type<br />

Ratio h b,m /h i vs. Hydrostatic Pressure/UCS Ratio<br />

φ=01°<br />

φ=05°<br />

φ=10°<br />

Ratio h b,m /h i (-)<br />

6.0<br />

5.0<br />

4.0<br />

φ=15°<br />

φ=20°<br />

φ=25°<br />

© SA<br />

S.A.M.<br />

.M.<br />

3.0<br />

2.0<br />

1.0<br />

Curling Type<br />

0.0<br />

0.02 0.20 2.00 20.00<br />

Hydrostatic Pressure/UCS Ratio (-)<br />

Figure X-31: <strong>The</strong> ratio hb,m/hi for a 120 degree blade.<br />

φ=30°<br />

φ=35°<br />

φ=40°<br />

Shear Angle β (deg)<br />

© S.A.M.<br />

.M.<br />

Shear Angle β vs. Hydrostatic Pressure/UCS Ratio<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

0.02 0.20 2.00 20.00<br />

Hydrostatic Pressure/UCS Ratio (-)<br />

Figure X-32: <strong>The</strong> shear angle β for a 120 degree blade.<br />

φ=01°<br />

φ=05°<br />

φ=10°<br />

φ=15°<br />

φ=20°<br />

φ=25°<br />

φ=30°<br />

φ=35°<br />

φ=40°<br />

Copyright © Dr.ir. S.A. Miedema TOC Page X-181 of 228

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