Research Article

A Case Study on the Control of Large Deformations in a Roadway Located in the Du’erping Coal Mine in China

Table 1

Parameters used in the ANSYS numerical model.

MaterialsPeak strength (MPa)E (MPa)μConstant R

Main reinforcement3502.0 × 1050.3452.4 mm2
Surface steel bar3502.0 × 1050.3200.9 mm2
Connect steel bar2502.1 × 1050.2550.2 mm2
Concrete28.12.55 × 1040.2

Note: the shear transferring coefficient of the concrete element was 0.3 when opened and 1 when closed.