Study on the Allowable Exposure Time of Temporary Goaf in the Open Stope and Backfill Mining Method with Large Structure Parameters

<div>Specimens of creep experiment. (a) Iron ore specimens. (b) Filling body specimens.</div>

Advances in Civil Engineering

Figure 2: Study on the Allowable Exposure Time of Temporary Goaf in the Open Stope and Backfill Mining Method with Large Structure Parameters 