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Advances in Civil Engineering
/
2018
/
Article
/
Tab 6
/
Research Article
Dynamic Fracture Toughness and Dynamic Tensile Strength of the Rock from Different Depths of Beijing Datai Well
Table 6
Dynamic fracture toughness and dynamic tensile strength of 610 m.
(MPa·m
1/2
·s
−1
)
(MPa·m
1/2
)
(MPa)
131236
20.9
7.0
141948
21.7
7.7
160777
23.6
7.8
199820
25.9
7.9
214561
27.9
9.8
290718
30.2
14.1
338431
30.7
15.2