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Advances in Civil Engineering
/
2018
/
Article
/
Tab 5
/
Research Article
Dynamic Fracture Toughness and Dynamic Tensile Strength of the Rock from Different Depths of Beijing Datai Well
Table 5
Dynamic fracture toughness and dynamic tensile strength of 510 m.
(MPa·m
1/2
·s
−1
)
(MPa·m
1/2
)
(MPa)
115945
11.7
5.7
122839
12.8
6.6
139858
14.3
6.9
159310
22.1
7.4
230667
22.1
7.9
240101
22.6
10.8
162295
23.2
10.8
207318
23.6
11.4