Research Article

Theoretical Study and Experiment Validation on Drilling Cutting Weight during the Whole Process of Drilling

Table 4

The fracture radii Rf at various points ahead of the working face (m).

c1 (MPa)Distance ahead of working face (m)
234567891011121314

0.80.1450.1560.1660.1760.1870.1970.2070.2170.2270.2360.2460.2560.265
1.00.1220.1300.1390.1480.1560.1640.1730.1810.1890.1970.2050.2130.221
1.20.1060.1130.1200.1280.1350.1420.1490.1560.1630.1700.1770.1840.191