Browse > Article
http://dx.doi.org/10.5389/KSAE.2017.59.5.083

Ground Subsidence Mechanism by Ground Water Level and Fine Contents  

Kim, JinYoung (Korea Institute of Civil Engineering and Building Technology)
Lee, SungYeol (Department of Rural & Biosistems Engineering, Chonnam National University)
Choi, ChangHo (Korea Institute of Civil Engineering and Building Technology)
Kang, JaeMo (Korea Institute of Civil Engineering and Building Technology)
Kang, KwonSoo (Department of Civil Engineering, Seonam University)
Jeong, HyoJin (Department of Rural & Biosistems Engineering, Chonnam National University)
Hong, JaeCheol (Department of Rural & Biosistems Engineering, Chonnam National University)
Lee, JaeSoo (Department of Rural & Biosistems Engineering, Chonnam National University)
Baek, WonJin (Department of Rural & Biosistems Engineering, Chonnam National University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.59, no.5, 2017 , pp. 83-91 More about this Journal
Abstract
Recently, ground subsidence frequently occurs in downtown area. The major causes of the subsidence on the subsurface were the damages of the water supply and sewer pipelines and excavation works in adjacent areas, etc. Because of these various factors, it is not easy to analyze the tendency of occurrence of ground subsidence. The purpose of this study is to clarify the effect of ground subsidence by the change of the fine particle content and ground water level and to establish the ground subsidence mechanism. In this study, a model soil-box was manufactured to simulate the failure of the old sewer pipe which is one of the causes on ground subsidence. And a model test was conducted to investigate the effects of fine contents and ground water level on the cavity occurrence. From the test results, firstly the higher the ground water level, the faster the primary cavity is formed as the seepage stress increases. As a result, the secondary cavity and the ground subsidence rapidly progress due to the relaxation of the surrounding ground. The total amount of discharged soil was decreased as the fine content increased.
Keywords
Ground subsidence; Ground water level; Fine particle content; Model test;
Citations & Related Records
연도 인용수 순위
  • Reference
1 JoongAng-Ilbo, 2015. Songpa, Guro-Sand Ground, Jongno-Old Sewerage, A danger zone of ground subsidence, JoongAng-Ilbo, Seoul :.10 (in Korean).
2 Kim, J., C. Choi, J. Kang, W. Baek, and M. Chung, 2016. Model test for the observation of cavity formation in sandy ground, The 6th Japan-Korea Geotechnical Workshop, Japanese Geotechnical Society Special Publication: 64-67.
3 Kim, J., J. Kang, C. Choi, and D. Park, 2017. Corellation analysis of sewer integrity and ground subsidence, Journal of the Korean Geo-Envrionmental Soceity 18(6): 31-37 (in Korean).
4 Kuwano, R., T. Horii, K. Yamaguchi, and H. Kohashi, 2010. Formation of subsurface cavity and Loosening due to defected old sewer pipe, Journal of Geotechnical Engineering, JGS 5(2): 219-229
5 Ministry of Land, Infrastructure and Transport, Korea, 2015. https://www.google.com/maps/d/viewer?mid=z1SH1Vit25sA.k17BYl7EYtLY (in Korean).
6 Renuka, S. and R. Kuwano, 2011. Formation and evaluation of loosened ground above a cavity by laboratory model test with uniform sand, Proc. of 13th International Summer Symposium, Uji, Japan: 211-214.
7 Sato, M. and R. Kuwano, 2010. Model tests for the evaluation of formation and expansion of a cavity in the ground, Proc. of 7th International Conference on Physical Modelling in Geotechnics: 581-586, Zurich, Switzerland.
8 Seoul City, 2015. Identification and management of cavity generation mechanism (in Korean).
9 Sewerage and Wastewater Management Department, City and Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism, website, 2009. http://www.milt.go.jp/crd/sewerage/sesaku/03kaichiku.html (in Korean).
10 Toda, J., A. Ohsugi, Y. Muraki, and Y. Kaneko, 2003. Void detection around deteriorated old sewer pipelines, The 38th Symposium of Japanese Geotechnical Engineering Society: 1755-1756.