Browse > Article
http://dx.doi.org/10.5804/LHIJ.2017.8.1.013

Flow Analysis Approach to Triggering Phenomenon of Ground Sinking in a Metropolitan Area  

Jo, Young-Seok (동국대학교 건설환경공학과)
Jang, Yeon-Soo (동국대학교 건설환경공학과)
Publication Information
Land and Housing Review / v.8, no.1, 2017 , pp. 13-22 More about this Journal
Abstract
In this study, triggering mechanism of ground sinking was analyzed through groundwater flow analysis on the basis of a case of the ground sinking occurred in Yongsan in 2015. The results of geotechnical investigation performed before and after the ground sinking were analyzed for the accurate understanding of geological features in the study area. The numerical groundwater flow analysis was performed to evaluate the influence of the flow behavior from the surrounding area toward the excavated site using software of Visual MODFLOW. As a result, it was found from the geotechnical analysis that the strata of sedimentary layer along the sunken area in the vertical direction was mixed significantly after the ground sinking compared with the status of the soil condition before the ground sinking. Piping was occurred at the toe of cut-off wall in the sandy gravel layer, and this phenomenon was predicted by the numerical flow analysis. Sequential ground displacement scenario of the ground sinking was derived from the geotechnical in situ test and numerical flow analysis performed in this study.
Keywords
Ground sinking; Groundwater; Flow analysis; Ground displacement; Piping;
Citations & Related Records
연도 인용수 순위
  • Reference
1 국토교통부 (2014), 지하수 관측연보, 국토교통부
2 롯데건설 (2006), 흙막이 가시설 가이드북, 롯데건설 기술연구소, p.107.
3 서울특별시 (2015), 지반정보 통합관리시스템, 서울특별시청 공간정보담당실, http://surveycp.seoul.go.kr:8080/Soil/main.do.
4 성민씨이텍 (2014), 지반조사보고서: 용산역 전면 제2구역 신축공사, 2014.
5 김상윤 (2016), 일본 후쿠오카 도심에 15m 대형 싱크홀... 피난 권고, 조선일보, http://news.chosun.com/site/data/html_dir/2016/11/08/2016110801318.html.
6 한국수자원공사 (2015), 국가 수자원 관리 종합정보시스템, WAMIS, 한국수자원공사, http://www.wamis.go.kr/
7 한국지반공학회 (2015), 연구보고서: 용산역 앞 보도함몰 원인조사 및 대책수립 KGS15-123.
8 ABC News (2015), "Sinkhole swallows two pedestrians in Seoul, pair survive fall with only minor injuries", Australian Broadcasting Corporation", http://www.abc.net.au/news/2015-02-25/two-pedestrians-rescued-after-falling-into-a-sinkhole/6260590.
9 BBC News (2015), "Recent sinkholes around the world and what caused them", British Broadcasting Corporation, http://www.bbc.com/news/science-environment-31602248.
10 Benito G., Perez del Campo P., Gutierrez-Elorza M., and Sancho C. (1995), "Natural and human-induced sinkholes in gypsum terrain and associated environmental problems in NE Spain", Environmental Geology, 25(3): 156-164   DOI
11 EJ Tech (2015), 용산 푸르지오 써밋 신축공사 월간 계측관리 보고서.
12 FCG (2015), "Sinkhole: Solving drainage and erosion problems", Fairfax County Government, Virginia, http://www.fairfaxcounty.gov/nvswcd/drainageproblem/sinkhole.htm.
13 Freeze, R.A. and Cherry, J.R. (1979), Groundwater: Prentice-Hall, p.29
14 Gutierrez F, Galve JP, Guerrero J, Lucha P, Cendrero A, Remomdo J, Bonachea J, Gutierrez M, and Sanchez JA. (2007), "The origin, typology, spatial distribution and detrimental effects of the sinkholes developed in the alluvial evaporite karst of the Ebro River valley downstream of Zaragoza city (NE Spain)", Earth Surface Processes and Landforms, 32(6): 912-928   DOI
15 Kang, I.S. (2014), "Sinkhole are here to stay", Korea Joongang Daily, http://koreajoongangdaily.joins.com/news/article/Article.aspx?aid=2994167.
16 Kim, Y.Y., Lee, K.K. and Sung, I.H. (2001), "Urbanization and the groundwater budget, metropolitan Seoul area, Korea", Hydrogeology Journal, 9(4): 401-412   DOI
17 Terzaghi, K. and Peck, R.B. (1967), Soil mechanics in engineering practice: Wiley, p.48.
18 Lee, S. (2015), "Sinkhole, a hole of fear swallows up road in a moment", Newshankuk, http://eng.newshankuk.com/?p=242.
19 Meng, Y., Lei, M.T., Lin, Y.S., Dai, J.L., and Guan, Z.D. (2012), "Models and mechanisms of drilling-induced sinkhole in China", Environmental Earth Science, 67(7): 1961-1969.   DOI
20 Pando, L., Pulgar, J.A., and Gutierrez-Claverol, M. (2013), "A case of man-induced ground subsidence and building settlement related to karstified gypsum (Oviedo, NW Spain)", Environmental Earth Science, 68(2): 507-519.   DOI
21 Youssef, A.M., Al-Harbi, H.M., Gutierrez, F., Zabramwi, Y.A., Bulkhi, A.B., Zahrani, S.A., Bahamil, A.M., Zahrani, A.J., Otaibi, Z.A., and El-Haddad, B.A. (2016), "Natural and human-induced sinkhole hazards in Saudi Arabia: distribution, investigation, causes and impacts", Hydrogeology Journal, 24(3): 625-644.   DOI