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List of products by author: A. Aslanbas
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Excavating a Metro Tunnel under a Lake with an EPB TBM Used for Istanbul 3th Airport
Abstract: The metro will make its way to the new Istanbul Airport earliest by 2021. There will be two lines, one with a length of 37 km and the other 35 km. There are few lakes left after mining activities carried out along the Metro Line which cause tremendous difficulties during tunnel excavation. This paper summarizes the performance of an EPB TBM and difficulties encountered and precautions taken...
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Excavating Metro Tunnels with an EPB TBM under Risk of Methane Explosion
Abstract: New Istanbul Airport is being constructed over an old coal field area of 35 km away from the city center. Sometimes TBM used for tunnel excavation cuts coal seams bearing methane. This paper summarizes the safety problems encountered between chainages of 24+375 km and 24+575 km. A special safety program is used during tunnel excavation. For safety reasons, methane sensors were placed upon TBM...
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Performance Prediction Models for EPB TBMs used in Gayrettepe- New Istanbul
Abstract: Empirical performance prediction models are developed in this study based on field data obtained from Gayrettepe-New Istanbul Airport Metro tunnel excavations of 5,313 m excavated by two identical EPM TBMs in basically clayey soils of Danismen Formation. Geotechnical characteristics of the soils (liquid and plastic limits, natural water content, fine material content) are obtained from site...
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