Radiology

Geology

Aerospace engineering

Structural engineering

Engineering

Stratum

Composite material

Compression (physics)

Weighting

Geotechnical engineering

Materials science

Roof

Layer (electronics)

Retaining wall

Compressibility

Medicine

International Journal of Rock Mechanics and Mining Sciences

Highlights•As a new approach, harmonically flexible-hard gob-side retaining mechanical model was firstly proposed, which provides us both compression and supporting force required for a gob-side retaining wall, by considering hard roof weighting.•The new flexible-hard artificial wall is of largecompressibilityand high supporting capacity.•The thicknesses of flexible layer and hard layer of artificial wall were quantitatively determined.•The ratios of flexible and hard material were tested and corresponding filling-procedures were proposed.

Design and construction of entry retaining wall along a gob side under hard roof stratum