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http://dx.doi.org/10.9720/kseg.2021.4.719

Estimation from Field Tests of the Excavation Efficiency of an Improved Hydraulic Rock Splitting System  

Park, Jong Oh (Songam Engineering & Construction)
Woo, Ik (School of Architecture & Coastal Construction Engineering, Kunsan National University)
Publication Information
The Journal of Engineering Geology / v.31, no.4, 2021 , pp. 719-730 More about this Journal
Abstract
An improved packer and injection system was developed to improve the efficiency of excavation by hydraulic rock splitting by reducing vibration and noise. Field testing of the system found hydraulic fractures limited in expansion and extension due to the loss of injection pressure by leackage from the cracks, and then the single packer applied to injection hole allowed to produce a sufficient tensile displacement for rock excavation. Numerical analysis based on the field test data could explain the development of cracks in the field experiments.
Keywords
hydraulic rock splitting; biotite granite; single packer system; injection system; numerical modeling;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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