Optimisation of Support for Large Section Cuts in Stress Zones
Based on the influence of the concentrated stress of the surrounding rock during the excavation and construction of the 15102 cut channel of Niushan Coal Mine,the surrounding rock is seriously broken after the construction of the cut channel,analysed the original design of the support and the main problems,and carried out the reasonable optimization of the support,and put forward the joint support technology,such as the"constant resistance anchor cable+truss anchor cable+hydraulic expansion anchor+monolithic hydraulic strut",and so on.Through the actual application of the effect,the joint support technology to control the phenomenon of deformation of the surrounding rock,to ensure the safety of equipment installation in the later working face,and achieved significant results.
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