China is the largest coal consumer in the world and the demand is still increasing. In order to meet the increasing demand of coal, most orefield have entered into the exploitation of deep mine beds. When exploitation surpass the critical depth, the driving and supporting coal roadway appears a series of large deformation and failure phenomenon, which includes difficulty in forming roadway, roof sink, walls shrink and the floor heave. Therefore, deep coal roadway supporting has become a key technical proble...
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