Behaviors and Overlying Strata Failure Law for Underground Filling of a Gently Inclined Medium-Thick Phosphate Deposit

Figure 14

(a) Stress distribution diagram of the fourth-level mining approach; (b) stress distribution diagram of the eighth-level mining approach, (c) stress distribution diagram of the twelfth-level mining approach; (d) stress distribution diagram of the seventeenth-level mining approach; (e) stress distribution diagram of the fourth-level recovery route; (f) stress distribution diagram of the eighth-level recovery route; (g) stress distribution diagram of the twelfth-level recovery route; and (h) stress distribution diagram of the sixteenth-level recovery route.

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