Anchorage Performance of a New Left Spiral Rebar bolt under Different Surrounding Rock Strength and borehole Depth
Ming Zhang,
Chen Cao,
Guanghan Li
et al.
Abstract:The theory and technology of rock bolting are fundamental research topics for strata control in civil and mining engineering. Rebar bolts are commonly used for roadway primary support in underground coal mine. To adapt to deep resource mining, a new left spiral rebar bolt has been developed. Compared to conventional rebar bolts, the result of installation test showed that the new bolt reduced of 41.5% and 57.9% in stirring resistance force and torque, respectively. In laboratory pullout tests, PVC and aluminum… Show more
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