Application of Presplitting Blasting Technology in Surrounding Rock Control of Gob-Side Entry Retaining with Hard Roof: A Case Study

Figure 13

Site photographs of the implementation of surrounding rock control technology for retaining roadway along goaf. (a) Construction of blasting drilling. (b) Explosive assembly. (c) Pile support advance support. (d) Erection of gangue retaining column. (e) Actual effect of gangue retaining. (f) Effect of Retaining Roadway along goaf.

(a)

(b)

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(d)

(e)

(f)