�?�?t ε l ρ l v l + �?�?ε l ρ l v l v l = ε l �?�?τ l + ε l ρ l g �?ε l �?p �?β v l �?v s The pure fractures encountered in the actual drilling approach are not parallel fractures by https://keithw222awq7.wikicommunication.com/user