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http://dx.doi.org/10.7474/TUS.2021.31.6.415

Estimating and Analyzing the Appropriate Pressing Force of the Rock Cutting Splitting Method  

Lee, Sang-Min (Korea Institute of Industrial Technology)
Kim, Mun-Gyu (Korea Institute of Industrial Technology)
Cho, Jung-Woo (Korea Institute of Industrial Technology)
Yu, Sang-Hwa (Hyochang Engineering)
Publication Information
Tunnel and Underground Space / v.31, no.6, 2021 , pp. 415-427 More about this Journal
Abstract
This technical report briefly introduced the rock cutting splitting method under development. This method is a method of excavating the rock by splitting the block after the rock cutting process. After designing the cutting geometry of the rock face, the chisel is press-fitted to remove the rock block. At this time, when the cutting block is properly designed, the tensile crack propagates smoothly at the bottom of the rock block. An analytical solution was devised to estimate the indentation force required for splitting rock blocks using fracture toughness mode 1 required for tensile crack growth. The impact force of the hydraulic breaker of the excavator was analyzed, and the grade of the excavator that can be constructed according to the rock block design geometry was analyzed.
Keywords
Cutting splitting; Rock block; Tensile crack; Fracture toughness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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