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List of products by author: E. Avunduk
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A New Generation of Portable Linear Rock Cutting Machine (PLCM ) and Comparison with Full Scale Linear Rock Cutting...
Abstract: A new portable linear rock cutting (PLCM) device was developed in the Mining Engineering De-partment of Istanbul Technical University and supported by The Scientific and Technological Re-search Council of Turkey (TUBITAK-112M859). The basic disadvantage of the full-scale linear rock cutting test is that it requires large blocks of rock samples, which are usually difficult, too expen-sive, or...
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Cutter Forces Measurement with (PLCM ) Comparison with the Theoretical Models
Abstract: Proper machine and cutter selection, cutter head design and performance prediction for mechanized excavators such as TBM or roadheaders are the most important parameters for a mechanized tunnelling or mining project. The most used machine design parameters are cutter layouts, cutting power of the machine, torque and thrust. Besides, performance prediction of the machines can be done by...
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Cutter Forces Measurement with PLCM© Using Mini Conical Pick: Comparison with the Theoretical and Empirical Models
Abstract: A new portable linear rock cutting (PLCM©) device was developed in the Mining Engineering Department of Istanbul Technical University and supported by The Scientific and Technological Research Council of Turkey (TUBITAK-112M859). In this paper, rock cutting experiments are performed by using mini real-life conical pick with a (PLCM). The conical pick used in this study has an attack angle 45...
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Effect of Adhesion on EPB TBM Performance
Abstract: Mixture of the excavated clay consisting soils and water sometimes generates a sticky muck, which adheres to the metal parts of TBMs such as cutting tools, cutterhead and transportation system causing blockages and stoppages in the job during excavation. This problem may lead to decreasing of advance rate and increasing of the project costs, since the excavation process could only be continued...
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Effect of Conditioning on Soil Workability determined by Mini-Slump and Flow Table Tests
Abstract: Effect of conditioning parameters on workability of sands was investigated by using flow table and newly suggested mini slump tests. The soil conditioning tests were performed on standard mortar sand at two foam types and different Foam Expansion Ratio () and Foam Injection Ratio () values. The foams were characterized by measurements of stability (half-life), density and bubble size. The...
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Effect of Soil Conditioning on Performance of an EPB TBM: from Laboratory to Mahmutbey Mecidiyekoy Metro Tunnels in...
Abstract: The basic purpose of this study supported by the Scientific and Technological Research Council of Turkey (TUBITAK, Project No: 213M487) is to analyze the effects of soil conditioning on the field performance of an EPB TBM used for excavation of the Mahmutbey-Mecidiyekoy metro tunnels having a total length of around 18.5 km (double tube) in Istanbul. Soil samples were obtained during the...
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Effect of Soil Conditioning on the EPB-TBM Excavation Performance: A Case Study of Dudullu-Bostanci Metro Project,...
Abstract: The use of underground space for transportation, energy requirement, sanitation and wastewater management is continuously increasing in urban areas. Mechanical excavation of this underground space with Earth Balance Pressure Tunnel Boring Machine (EPBTBM) is one of the most preferred method beneath intensive urban areas. A good soil conditioning can reduce the surface settlement and create a...
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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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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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