Analysis of Overburden Structure and Pressure-Relief Effect of Hard Roof Blasting and Cutting

<div>Relationship among rotation angle, cutting angle, and cutting position. (a) Geometric relationship between blocks; (b) relationship between the rotation angle and cutting position.</div>

Advances in Civil Engineering

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Figure 2

Figure 2: Analysis of Overburden Structure and Pressure-Relief Effect of Hard Roof Blasting and Cutting 