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터널굴착시의 안정성 판단과 지반보강을 위한 계측결과의 분석기법
전제성 ( Jeon Je-sung ),이송 ( Lee Song ),정대석 ( Jung Dae-suk ),이규환 ( Lee Kyu-hwan ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
During tunnel excavation in urban area a systematic monitoring is important for the purpose of determination of support type and quantity, as well as for the control of stability both surface structures and the tunnel itself due to the frequently, and in many cases, abruptly changing ground condition. In Austria absolute displacement monitoring methods have replaced relative displacement measurements by geodetic methods to a large extent. Prompt detection of weak ground ahead of the tunnel face as well as better adjustment of excavation and support to the geotechnical conditions is possible with the help of the improved methods of data evaluation on sites. Deformation response of the ground to excavation starts ahead of the tunnel face, therefore, the deformation and state of the tunnel advance core is the key factor of the whole deformation process after excavation. In other words, the rigidity and state of the advance core play a determining role in the stability both surface structures and the tunnel itself.
[제1분과/비파괴검사 및 계측기술] 터널굴착시의 안정성 판단과 지반보강을 위한 계측결과의 분석기법
전제성(Jeon Je-Sung),이송(Lee Song),정대석(Jung Dae-Suk),이규환(Lee Kyu-Hwan) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
During tunnel excavation in urban area a systematic monitoring is important for the purpose of determination of support type and quantity, as well as for the control of stability both surface structures and the tunnel itself due to the frequently, and in many cases, abruptly changing ground condition. In Austria absolute displacement monitoring methods have replaced relative displacement measurements by geodetic methods to a large extent. Prompt detection of weak ground ahead of the tunnel face as well as better adjustment of excavation and support to the geotechnical conditions is possible with the help of the improved methods of data evaluation on sites. Deformation response of the ground to excavation starts ahead of the tunnel face, therefore, the deformation and state of the tunnel advance core is the key factor of the whole deformation process after excavation. In other words, the rigidity and state of the advance core playa determining role in the stability both surface structures and the tunnel itself
전제성 ( Jeon Je-sung ),신동훈 ( Shin Dong-hoon ),박한규 ( Park Han-gyu ),이규환 ( Lee Kyu-hwan ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.1
There are lots of tunnels in vicinity of Seoul that classified into 1st grade facility by special act for the safety control of public structures and with providing capacity equals to l,543×103(t/day) and inner pressure equals to 2.5-3.5kg/cm<sup>2</sup>. In this research, site investigation and stability analysis for water tunnel caused by new construction of road tunnel were carried out. The ground near water tunnel were zoned into spatial area having similar geotechnical characteristics and estimating geotechnical properties for each area. The site for analysis consists of banded biotite gneiss, biotite schist and granite gneiss with spatial non-homogeneity, and for that reason weathering and fault zone were distributed with large scale. It’s important thing to consider spatial ground zone and their geotechnical properties properly into stability analysis at design and construction stage. Also, using results of site investigation, stability of existing tunnel have been analyzed for Hydraulic Fracture/Jacking and deformation in detail.