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

Table 2

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

h (m)	5	7.5	10	15	20
(MPa)	41.3	30.74	21.1	17.1	16.6