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An Analysis of the Behavior of Rock Slope with Excavation-Induced Tension Cracks Located in DongHae Highway Construction Site  

조태진 (부경대학교 환경ㆍ해양대학 환경탐사공학과)
이창영 (지오텍컨설탄트(주))
고기성 (LG건설)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.8, 2004 , pp. 15-27 More about this Journal
Abstract
Sliding aspects of rock slope, where large-scaled tension cracks are induced during preliminary excavation, have been analyzed. Structure of rock mass is investigated by performing the electrical resistivity survey and the orientations and positions of discontinuities are measured from DOM-drilled core log. Geological evidence far primary failure movement has been detected and clay minerals which possess swelling properties are identified through XRD analysis. Slope stability is examined by considering the orientations of discontinuities and their trace distributions on the cut-face and neighboring natural slope surface. Both orientations and positions of failure-invoking discontinuity planes, traces of which are exposed within the anticipated sliding region, are concerned fur analyzing the preferred sliding directions. Regional sliding vectors are assessed based on the relative positions of potential sliding planes in the boreholes and the general trend of anticipated failure movement of rock slope is also investigated.
Keywords
DOM; Failure movement; Joint orientation; Rock slope; Sliding; Tension crack;
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