Shallow Failure of Weak Slopes in Bayan Obo West Mine.

According to the summary and analysis by Huang [ 24 ], the current theoretical analysis generally believes that the fractured circle of uncoupled charge blasting is 10–15 r b , and with the increase in the uncoupling coefficient, the ratio of the fracture radius of the rock mass to the radius of the blasthole presents that there is a decreasing trend from fast to slow.

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