Analysis of Influencing Factors of Roadway Stability and Adaptability Criterion for Gob-Side Pre-Backfill Driving

Figure 2

Stages of the gob-side pre-backfill driving procedure without pillar. (a) Large section entry driving of the current panel. (b) Backfill wall construction. (c) The current panel retreating. (d) Roadway driving along the backfill wall for the adjacent panel.

(a)

(b)

(c)

(d)