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http://dx.doi.org/10.5762/KAIS.2017.18.1.545

The Road Subsidence Status and Safety Improvement Plans  

Bae, Yoon-Shin (Dept. of Safety and Environment, The Seoul Institute)
Kim, Kyoon-Tai (Construction System Research Center, Korea Institute of Civil engineering and building Technology)
Lee, Sang-Yum (Dept. of Construction Information Engineering, Induk University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.1, 2017 , pp. 545-552 More about this Journal
Abstract
Ground subsidence can result in the formation of sinkholes, potholes, settlement of structures, and road subsidence. Road subsidence is described as the sudden collapse of the road surface into subsurface cavities caused by the loss of bearing capacity in the ground, such as the dissolution of limestone by fluid flow in the surface causing the formation of voids leading to subsidence at the surface. Road subsidence occurs about 665 times annually, and this incidence has been increasing until 2013. Damaged underground facilities, management negligence, and lowering of the ground water table have been the causes of road subsidence in Seoul. Seoul metropolitan government announced special management counter plans to relieve the anxieties and make the roads safe for passing. Construction sites, such as excavation works, need to be managed properly because they have strong potential to induce road subsidence. The aim of this study was to identify the main causes of road subsidence and suggest management plans. First, life cycle cost analysis revealed the daytime construction to be more appropriate than nighttime. In addition, by analyzing the limitations of using sand as a backfill material, it is proposed to use a flowable backfill material instead of sand. Finally, to reduce the blind spots, which is a problem in surveying the road pavement conditions of local governments, the road to be managed is divided into several zones, and a specialized agency is selected for each zone and a method of surveying the blind spots through collaboration is suggested.
Keywords
backfill material; compaction; excavation work; road subsidence;
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  • Reference
1 Seoul Metropolitan Government, Road subsidence management manual and measures in Seoul, 2015.
2 Ministry of Land, Infrastructure and Transport, "Vehicle guide ", 2006.
3 Seoul Metropolitan Government, Asphalt design manual in Seoul, 2014.
4 Caltrans, "Life-cycle cost analysis procedures manual", 2007.
5 Seoul Metropolitan Government, Guideline for construction expenses arrangement of Seoul public buildings, 2009.
6 http://stat.seoul.go.kr
7 http://surveycp.seoul.go.kr
8 Ministry of Land, Infrastructure and Transport, "Risk analysis of road subsidence and development report", 2016.
9 Ministry of Land, Infrastructure and Transport, "Safety management manual of road subsidence", 2015.
10 Ministry of Land, Infrastructure and Transport, "Investigation of sinkhole and policy suggestions", 2014.
11 S.S. Jeon, "Permanent Ground Deforrmation Effects on Underground Wastewater Pipeline Performance", Journal of the Korea Academia-Industrial cooperation Society, vol.17, no. 1, pp. 284-289, 2016. DOI: http://doi.org/10.5762/KAIS.2016.17.1.284   DOI
12 Seoul Metropolitan Government, Road excavation and backfill construction safety guide, 2014.