Fig. 7

Relationship between stress and mass concentration of backfill. (a) Correlation of σCI and σCD with mass concentration in backfill, (b) Correlation of σCI/σC and σCD/σC with mass concentration in backfill.

Relationship between stress and mass concentration of backfill. (a) Correlation of σCI and σCD with mass concentration in backfill, (b) Correlation of σCI/σC and σCD/σC with mass concentration in backfill.