Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting

<div>Effects of <i>k</i><sub><i>r</i></sub> on the development of main cracks.</div>

Advances in Civil Engineering

Figure 9: Analysis and Application on Controlling Thick Hard Roof Caving with Deep-Hole Position Presplitting Blasting 