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Optimization and Implementation on Blasting Excavation of Underground Workshop's Rock Anchor Beam

Guo Pei-hua

Abstract

In excavation of underground workshop's rock anchor beam for Lashiwa Hydropower Station,the zoning and stepping excavation was used to protect area.The optimal excavation scheme and blasting parameters were determined through adjusting the inclination of smooth blasting holes,launching the field test by various plans,and proceeding the sonic test of rock destroy circle by blasting.The quality of formed rock benchis in agreement with design desire.

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Key concepts: Excavation, Rock blasting, Mining engineering, Geology, Geotechnical engineering, Hydropower, Rock mass classification, Engineering