Experiment on Mine Ground Pressure of Stiff Coal-Pillar Entry Retaining under the Activation Condition of Hard Roof

<div>Deformation characteristics of the 19.5 m stiff coal-pillar entry retaining [<a href="/journals/ace/2018/2629871/#B39">39</a>]. The entry experiences the whole hard roof activation above the gob.</div>

Advances in Civil Engineering

fig9

Figure 9

Figure 9: Experiment on Mine Ground Pressure of Stiff Coal-Pillar Entry Retaining under the Activation Condition of Hard Roof 