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http://dx.doi.org/10.22704/ksee.2019.37.4.001

Application of Digital Image Correlation Method for Measurement of Rock Pillar Displacement and Vibration Due to Underground Mine Blasting  

Ko, Young-Hun (한국건설기술연구원 인프라안전연구본부)
Seo, Seung-Hwan (한국건설기술연구원 인프라안전연구본부)
Lim, Hyun-Sung (한국건설기술연구원 인프라안전연구본부)
Jin, Tai-Lie (오엠에이곰 유한회사)
Chung, Moon-Kyung (한국건설기술연구원 인프라안전연구본부)
Publication Information
Explosives and Blasting / v.37, no.4, 2019 , pp. 1-9 More about this Journal
Abstract
In this study the applicability of a Digital Image Correlation (DIC) method was investigated by measuring the displacement and vibration of rock pillar due to underground mining blasting. When combined with a high speed photography technology, the DIC method provides an excellent photographic image processing ability that can be used to convert the evolving full-field surface properties of structures to 2D or 3D set of coordinate values. The measured coordinate sets are then used to calculate the displacement, strain, and velocity of the target structure. This technique is widely used in science and engineering, and continuously finds its new application areas. In this study, the DIC system and the conventional seismograph were compared for their ability to measure the displacement and vibration produced by blasting. In the field test both methods showed similar results. Thus, it is concluded that the DIC method is feasible to measure the ground displacements and vibrations from blasting.
Keywords
Digital image correlation (DIC); Rock pillar; Underground blasting; Displacement; Vibration;
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