한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 1990년도 PROCEEDINGS OF THE FIRST KOREA-JAPAN JOINT GEOTECHNICAL SEMINAR ON EXCAVATION and TUNNELING IN URBAN AREAS
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- Pages.97-110
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- 1990
UNDERGROUND WATER PROBLEMS IN DEEP EXCAVATION CONSTRVCTION CONTROL AGAINST BOILING FAILURE IN DEEP EXCAVATION IN SANDY GROUND BY FIELD MONITORING
- Iwasaki, Yoahinori (Director Geo-Research Inst., Osaka Soil Test Lab. Osaka, Japan)
- 발행 : 1990.10.01
초록
This paper presents a case history of a deep open cut excavation of Nakagawa section for Futuoka Subway construction which adopted observational mettled against boiling failure and completed with success by modifying construction based upon field monitoring. One of the difficult conditions for the excavation was sandy layer with high water pressure which was anticipated boiling failure. The boiling was generally considered as one of the difficult phenomena to work with the observational method because of its unpredictable catastrophic nature. Laboratory experiments showed the existence of the prefailure movements of the ground and the possibility of the application of the observational method against the boiling failure. Construction step was planned to be modified, if necessary, based upon field monitoring and was completed with success.
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