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·m1/2·s−1) (MPa·m1/2) (MPa)

13123620.97.0
14194821.77.7
16077723.67.8
19982025.97.9
21456127.99.8
29071830.214.1
33843130.715.2