Compression of Aggregates of Acid-Leached Coal Gangues: Implications for Coal Mine Backfill

Figure 5

Compaction characteristics of coal gangues with different particle sizes following immersion at particular pH values: (a) pH = 3: σ–ε; (b) pH = 3: σ–k; (c) pH = 5: σ–ε; (d) pH = 5: σ–k; (e) pH = 7: σ–ε; (f) pH = 7: σ–k.

(a)

(b)

(c)

(d)

(e)

(f)