Fig. 1 | Scientific Reports

Fig. 1

From: Research and engineering practice of high stage and long span complex goaf filling treatment technology

Fig. 1

Current situation of mining production and Current situation of goaf: (a) the adit entrance of the 500 m level; (b) layout of surface filling pipeline at 580 m adit entrance; (c) highway construction in mines; (d) filling station configuration (e) bottom structure of 528 m level; (f) the chute of 540 m level; (g) the condition of the baseplate after filling the goaf.

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