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http://dx.doi.org/10.14481/jkges.2015.16.10.23

A Case Study on Collapse Characteristics of Slope during Construction in the Chung-Cheong Area  

Lee, Jundae (Department of Civil Engineering, Semyung University)
Bae, Wooseok (NANO-GEO ENC Co., Ltd.)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.10, 2015 , pp. 23-32 More about this Journal
Abstract
Most studies on slope collapsed have focused on collapse cases that occur on stabilized slopes in public use. Few studies have been conducted on the collapse characteristics of slopes that occur during construction before stabilization of the slope. In this study, detailed investigation was conducted for 79 sites where slope collapse occurred during or immediately after construction in the Chungcheong region, and their geometrical characteristics, collapse characteristics, design and reinforcement methods were evaluated. As a result of this analysis, it was found that the Chungbuk (CB) area was marked by plane-type collapse and surface layer collapse whereas the Chungnam (CN) area was marked by surface layer collapse or loss of sedimentary rocks. Furthermore, the major collapse factors of the Chungbuk region were joint alternations (53%) and weathering (25%), and the blocking due to multidirectional joints and foliation was also an influencing factor. In the phyllite area, too, the development of joints (55%) was a major factor, but the geological characteristics (36%) of sedimentary rocks such as faults and coaly shale also had considerable effects. Therefore, the geological, climatic, and environment characteristics were found to have affected the stability of slopes.
Keywords
Slope failure; Detailed investigation; Geological characteristic; Joint alternation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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