Subsidence Control Design Method and Application to Backfill-Strip Mining Technology

Table 3

Predicted parameters of PIM in the case of repeated mining.

Mining depth (m)	Q	b	Tan β	θ (°)	S (H)
300–500	0.68	0.3	2.4	87	0.06
550–1000	0.60	0.3	2.2