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http://dx.doi.org/10.7474/TUS.2018.28.5.457

A Study on the Stability Analysis of Underground Limestone Openings using the Measurement Vibration Waveform  

Kim, Byung-Ryeol (Dept. of Resources Energy System Engineering, Kangwon National University)
Lee, Seung-Joong (Dept. of Research Institute for Earth Resources, Kangwon National University)
Choi, Sung-Oong (Dept. of Resources Energy System Engineering, Kangwon National University)
Publication Information
Tunnel and Underground Space / v.28, no.5, 2018 , pp. 457-475 More about this Journal
Abstract
For increase of reality in numerical analysis, a blasting vibration waveform obtained from field blast operations has been directly used for input parameters of dynamic analysis in the form of vibration velocity. A numerical model was built considering the geological characteristics of underground limestone opening as well as the mining stages in this opening, and the effect of blast operations on stability of underground limestone opening was investigated by dynamic numerical analysis. The adequacy of applying the real vibration waveform to dynamic analysis has been approved from the preliminary analysis, and the dynamic numerical analysis results show that the continuous mining operation can cause the collapse of roof in openings and the active yield zone around openings. Therefore, the additional reinforcements should be applied for ensuring the stability of underground limestone openings.
Keywords
Blasting vibration; Underground opening; Measurement vibration waveform; Dynamic analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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