Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Analysis on the Characteristics of the Landslide - With a Special Reference on Geo-Topographical Characteristics -

땅밀림 산사태의 발생특성에 관한 분석 - 지형 및 지질특성을 중심으로 -

  • Park, Jae-Hyeon (Department of Forest Resources, Gyeongnam National University of Science and Technology)
  • 박재현 (경남과학기술대학교 산림자원학과)
  • Received : 2015.02.02
  • Accepted : 2015.03.27
  • Published : 2015.12.31
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Abstract

This study was carried out to identify the reasons of the landslide by land creeping in South Korea in order to provide basic information for establishing the management plan for prevention. Total 29 sites of landslide areas caused by land creeping were observed in South Korea. Among them, the soil-composition of most frequent landslide areas occurred by land creeping was colluvium landslide as 75.9% (22 sites), followed by clay soil landslide as 10.3% (3 sites), bedrock landslide as 6.9% (2 sites), and weathered rock landslide as 6.9% (2 sites). According to the types of parental rocks, the investigated landslide areas were divided into 3 types: 1) metamorphic rocks including schist, phylite, migmatitic gneiss, quartz schist, pophyroblastic gneiss, leucocratic granite, mica schst, banded gneiss and granitic gneiss, 2) sedimentary rocks including limestone, sandstone or shale and mudstone, 3) igneous rocks such as granite, andesite, rhyolite and masanite. As a result, it was noticed that the landslides occurred mostly at the metamorphic rocks areas (13 sites; 44.8%), followed by sedimentary rock areas (12 sites; 41.4%), and igneous rock areas (4 sites; 13.8%). Looking at the direct causes of the landslide, the anthropological activities (71%) such as cut slopes for quarrying, construction of country house, plant, and road, farming of mountain top, and reservoir construction were the biggest causes of the landslides, followed by the land creeping landslides (22%) caused by geological or naturally occurred (22%), and cliff erosions (7%) by caving of rivers and valleys.

이 연구는 우리나라에서 발생한 땅밀림 산사태의 발생원인을 파악하여 이를 방지하기 위한 관리대책을 수립하기 위한 기초자료를 제공하기 위하여 수행하였다. 우리나라에서 발생된 땅밀림 산사태지는 총 29개소로 이 중 암반 땅밀림지 2개소(6.9%), 풍화암 땅밀림지 2개소(6.9%), 붕적토 땅밀림지 22개소(75.9%), 점질토 땅밀림지 3개소(10.3%)로 붕적토 땅밀림지가 가장 많았다. 땅밀림 산사태지의 암석 성인별 모암은 화성암류에서 화강암, 안산암, 유문암, 안산암류와 마산암 등이 4개소(13.8%), 퇴적암류에서는 석회암, 사암 및 혈암, 이암 등이 12개소(41.4%), 변성암류에서는 편암, 천매암, 미그마싸이트질편마암, 석영편암, 반상변정질편마암, 우백질화강암, 운모편암, 호상편마암, 화강암질편마암 등이 13개소(44.8%)로 변성암 지대에서 가장 많이 발생하였다. 발생 원인별로 직접적인 원인으로는 채석 및 토사채취에 의한 산각의 절취, 전원주택, 공장 및 도로건설을 위한 산각의 절취, 산지 상부의 밭경작, 저수지 축설을 위한 산지절취 등의 인위적 원인은 전체의 약 71%로 나타났으며, 하천 및 계곡의 포락 등에 의한 벼랑침식에 의한 지역이 약 7%, 지질적이거나 자연적인 현상에 의한 땅밀림 산사태지는 약 22%로 인위적 원인이 가장 높은 것으로 분석되었다.

Keywords

References

  1. Cha, A.R. 2014. A Comparison on the Identification of Landslide Hazard using Geomorphological Characteristics. Journal of the Korean Geoenvironmental Society 15(6): 67-73. https://doi.org/10.14481/JKGES.2014.15.6.67
  2. Ham, D.H. and Hwang, S.h. 2014. Review of Landslide Forecast Standard Suitability by Analysing Landslideinducing Rainfall. Journal of the Korean Society of Hazard Mitigation 3(14): 299-310.
  3. Jau, J.G., Park, S.J., Son, D.S., and Joo, S.H. 2000. The Effects of Geological and Topographical Features on Landslide and Land-creep. Journal of Korean Forestry society 89(3): 323-334.
  4. Kim, K.H., Junh, H.R., Park, J.H., and Ma, H.S. 2011. Analysis on Rainfall and Geographical Characteristics of Landslides in Gyeongnam Province. Journal of the Korea Society of Environmental Restoration Technology 14(2): 33-45.
  5. Lee, K.C., Jang, Y.G., Song, J.H., and Kang, I.J. 2014. Construction and Utilization Plan of Steep Slope and Underground Spatial Information DB for Steep Slope Disaster Prevention. Journal of the Korean Geoenvironmental Society 15(7): 13-21. https://doi.org/10.14481/jkges.2014.15.7.13
  6. Ma, H.S., Jeong, W.O., and Park, J.W. 2008. Development of Prediction Technique of Landslide Hazard Area in Korea National Park. Journal of Korean foRestry Society 97(3): 326-331.
  7. Min, B.K., Kang, I.J., Pack, D.H., and Kim, B.W. 2013. The Selection of Landslide Risk Area Using AHP and Geomorphic Element. Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography 31(6-1): 431-437. https://doi.org/10.7848/ksgpc.2013.31.6-1.431
  8. Park, J.H., Choi, K., Lee, S.G., Ma, H.S., Lee, J.H., and Woo, B.M. 2003a. Articles : Analysis on the Characteristics of the Landslide in Nasamri (1) -With a Special Reference on Geo-Topographical Characteristics-. Journal of Korean Forestry Society 92(3): 246-253.
  9. Park, J.H., Choi, K., Ma, H.S., Lee, J.H., and Woo, B.M. 2003b. Articles : Analysis on the Characteristics of the Landslide in Nasamri (2) -With a Special Reference on Cause of Landslide-. Journal of Korean Forestry Society 92(6): 526-535.
  10. Park, J.H., Lee, S.G., Choi, K., Ma, H.S., Lee, J.H., and Woo, B.M. 2004. Articles : Analysis on the Characteristics of the Landslide in Naesamri(3) - With a Special Reference on Stability Analysis -. Journal of Korean Forestry Society 93(3): 188-197.
  11. Park, J.H., Choi, K., Bae, J.S., Ma, H.S., and Lee, J.H. 2005a. Article : Analysis on the Characteristics of the Landslide in Maeri (1) - With a Special Reference on Geo-Topographical Characteristics -. Journal of Korean Forestry Society 94(3): 129-134.
  12. Park, J.H., Choi, K., Bae, J.S., Ma, H.S., and Lee, J.H. 2005b. Article : Analysis on the Characteristics of the Landslide in Maeri (2) -With a Special Reference on Cause of Landslide-. Journal of Korean Forestry Society 94(4): 243-251.
  13. Park, J.H., Choi, K., Bae, J.S., Ma, H.S., Lee, J.H., and Youn, H.J. 2005c. Article : Analysis on the Characteristics of the Landslide in Maeri (3) -With a Special Reference on Slope Stability Analysis-. Journal of Korean Forestry Society 94(6): 377-386.
  14. Varnes, D.J. 1984. Landslide hazard zonation : A review of principle and practice. United Nations Educational. Scientific and Cultural Organization. pp. 9-59.
  15. Woo, B.M. 1997. Erosion Control Engineering. Hyang-moon Corp. Seoul. pp. 310.
  16. Woo, B.M., Park, J.H., Choi, H.T., Jeon, G.S., and Kim, K.H. 1996a. Articles : A Study on the Characteristics of the Landslide in Hyuseok - dong (I) - Topographical Characteristics and Surface Displacement -. Journal of Korean Forestry Society 84(4): 565-570.
  17. Woo, B.M., Park, J.H., Choi, H.T., Jeon, G.S., and Kim, K.H. 1996b. Articles : A Study on the Characteristics of the Landslide in Hyuseok - dong (I) - Geological and Hydrological Characteristics -. Journal of Korean Forestry Society 85(4): 571-576.
  18. Yoo, C.S. and Kim, K.W. 2010. Analysis on Characteristics of Sediment Produce by Landslide in a Basin 2. Rainfall Event-based Analysis. Journal of the Korean Society of Hazard Mitigation 10(3): 147-154.

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