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

Figure 13

(a) Subsidence change curve of the rock formation (the second layer measuring points); (b) subsidence change curve of the rock formation (the fourth layer measuring points); and (c) subsidence change curve of the rock formation (the seventh layer measuring points).

(a)

(b)

(c)