Analysis of Influencing Factors of Roadway Stability and Adaptability Criterion for Gob-Side Pre-Backfill Driving

Table 4

The normal stress at the cross section of the backfill for different thicknesses of the immediate roof.

D (m)	0	2	4	6	8	10
(MPa)	258.4	54.4	25.23	14.07	8.17	4.53