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

Table 3

The normal stress at the cross section of the backfill in different elastic modulus of the main roof.

E (GPa)	5	10	15	20	25	30
(MPa)	66.2	45.5	16.17	12	10	9.4