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Bolt support technology for large cross sectional equipment remove gateway and application

ZHAO Jun(Technology Center,Jincheng Anthracite Coal Mining Group Corporation Ltd.,Jincheng 048006,China)  
Taking pre-excavated large cross sectional equipment remove gateway in Sihe Mine of Jincheng Coal Mining Group as an example,the finite differential fractional value calculation software was applied to simulate the surrounding rock deformation and failure features for the difference distances between the coal mining face and the equipment remove gateway and when the coal mining face reached the equipment remove gateway.The paper introduced the bolt and anchor combined support system and parameters of the equipment remove gateway and the reinforced support system.With the analysis on the monitoring and measured data of the strata pressure,the paper assessed the support results of the equipment remove gateway.The support results showed that the reinforced support with the chock supports was a suitable support system for the equipment remove gateway base on the bolt and anchor combined support system.
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