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Study on Establishing a Blast Guideline for Securing an Underground Crusher Room from Ground Vibrations  

Choi, Byung-Hee (한국지질자원연구원)
Ryu, Chang-Ha (한국지질자원연구원)
Kim, Hyun-Woo (한국지질자원연구원)
Kang, Myoung-Soo (한국지질자원연구원)
Publication Information
Explosives and Blasting / v.33, no.2, 2015 , pp. 15-24 More about this Journal
Abstract
In general, blast vibrations could make underground cavern unstable by causing relative movements between the surrounding rock blocks that are divided by discontinuities such as joints and faults around the cavern. In the study, a blast guideline was established to obtain the stability of a large-scale cavern for underground crusher room in an open pit limestone mine in Korea. The guideline was suggested in the form of a standard calculation method of the maximum charge per delay for a safe blast. The allowable level of peak particle velocity for the cavern was determined based on the result of a numerical analysis using FLAC2D. The ground vibration data required for the study was obtained from field measurements.
Keywords
Blast vibration; Underground crusher room; Blast guideline; Open pit mine; Peak particle velocity; FLAC2D;
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