Presplitting Blasting the Roof Strata to Control Large Deformation in the Deep Mine Roadway

<div>Original support form of the 3307 ventilation roadway. (a) Front view of original support form of the roadway. (b) Top view of original support form of the roadway.</div>

Advances in Civil Engineering

fig2

Figure 2

Figure 2: Presplitting Blasting the Roof Strata to Control Large Deformation in the Deep Mine Roadway 