Research Progress of Yielding Bolt Support Applied in Surrouding Rock Large Deformation
The yieldable bolt support is a method that can effectively control large deformation of roadway surrouding rock,allowing controlled rock deformation to reduce the pressure of surrounding rock,so as to avoid excessive lining stress.The research progress yielding bolts has been summarized in the following aspects.The researches show that different type of yielding bolts.The problems of insufficient elongation and low bearing performance of ordinary bolt are revealed.They elucidate the yielding mechanism and demonstrate the superiority of controlling large deformation of surrounding rocks with yielding bolts.
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