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http://dx.doi.org/10.7474/TUS.2021.31.1.001

Development and Application of Large-diameter Cut-hole Exploration System for Assessment of the Geological Condition beyond NATM Tunnel Face  

Kim, Minseong (Department of Earth Resources & Environmental Engineering, Hanyang University)
Jung, Jinhyeok (Department of Earth Resources & Environmental Engineering, Hanyang University)
Lee, Jekyum (Department of Earth Resources & Environmental Engineering, Hanyang University)
Park, Minsun (Department of Earth Resources & Environmental Engineering, Hanyang University)
Bak, Jeonghyeon (Department of Mechanical Engineering, Hanyang University)
Lee, Sean Seungwon (Department of Earth Resources & Environmental Engineering, Hanyang University)
Publication Information
Tunnel and Underground Space / v.31, no.1, 2021 , pp. 1-9 More about this Journal
Abstract
Recently, the development of underground space has been accelerated with rapid urbanization, and it is significantly important for safe construction to accurately understand the geological conditions of the section when excavating rocks. In this paper, a boring alignment tracking and geological exploration system have been developed to identify the geological conditions beyond the excavation face by utilizing a MSP method that bores a large empty hole to reduce blast-induced vibration. The major advantage of the proposed exploration system is that we can obtain the ground condition of 50 m ahead of the excavation face through exploration along blast cut-holes drilled for the NATM tunnel construction. In addition, we introduce several case histories regarding the assessment of the geological conditions beyond the tunnel face by monitoring the inside of large empty holes using the proposed hole exploration system.
Keywords
NATM tunnel; MSP method; Large-diameter cut-hole; Ground investigation; Geological condition beyond excavation face;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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