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List of products by author: H. Copur
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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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Predicting Roadheader Performance by using Portable Linear Cutting Machine
Abstract: Roadheaders are widely used in mining and tunneling industry. A portable linear cutting machine (PLCM) has been developed within a project supported by Scientific and Technological Research Council of Turkey (TUBITAK 112M859) for the performance prediction of mechanical excavators used in mining and tunneling applications. A field study was performed in Amasya Suluova Coal Mine owned by PLT...
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Prediction of Reaming Performance of Inclined Raises Using Pilot Hole Drilling
Abstract: Appropriate performance prediction of Raise Boring Machines (RBMs) in feasibility and planning stage of mechanized shaft excavation projects directly effects the economics of the projects and job completion time. This study aims to develop empirical performance prediction models for inclined reaming operations by using pilot hole drilling and reaming operational parameters and...
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Raise Boring Machine performance in the Yusufeli Dam and HEPP Project
Abstract: Performance of a Raise Boring Machine (RBM) used in Yusufeli HEPP project in Turkey is evaluated in this study. The depth and diameter of the energy shaft are 130 m and 2.44 m, respectively. The drill core samples were obtained from the site (diabase and granodiorite) and compressive strength, tensile strength, static elasticity modulus and Poisson’s ratio, dynamic elasticity modulus and...
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Safety precautions against fuel leakage into NATM tunnels of Uskudar – Umraniye - Cekmekoy Metro Project
Abstract: A sudden water inrush occurred along with fuel from the old / unused underground storage tanks of a fuel-station through one of the forepooling drills and thus, construction of the double- tube NATM tunnels with 30 m bench cross-section was stopped on 12 June 2015 in Uskudar - Umraniye - Cekmekoy Metro Project. The risks and safety precautions for re-starting the construction, are summarized....
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TBM performance prediction using PLCM and comparison with TBM field performance parameters
Abstract: Full Scale Linear Cutting Machine (FLCM) is a most popular rock cutting test device for prediction performance parameters of mechanical excavators. LCM test have some disadvantages that requires too much manpower, large blocks of rock samples, which are usually difficult, too expensive, or impossible to obtain. For these reasons a new portable linear rock cutting...
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The performance prediction of a TBM in a complex geology in Istanbul and the comparisons with actual values
Abstract: Uskudar-Umraniye–Cekmekoy-Sancaktepe metro line of 20 km having two tubes is recently commissioned to Doğuş Construction Company by Istanbul Metropolitan Municipality authorities. The geology is complex consisting of sandstone, arcosic sandstone mudstone, siltstone, shale, limestone, andesite, and quartzitic conglomerate. The geologic units are frequently cut by...
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Unrelieved Spesific Energy Estimation from PLCM and FLCM Linear Rock Cutting Tests and Comparison with Rock Properties
Abstract: Estimation of laboratory specific energy values from mechanical rock properties to predict the efficiency of mechanical miners (tunnel boring machines, roadheaders, continuous miners, shearers, etc.) is the basic aim of this study using laboratory linear rock cutting devices. Specific energy is defined as the amount of energy required to break a unit volume or weight of rock expressed in kWh/m3...
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