ÜSKÜDAR-ÜMRANİYE-ÇEKMEKÖY METRO TÜNELİNDE KULLANILAN PASA BASINÇLI TÜNEL AÇMA MAKİNESİNİN (EPB-TBM) PERFORMANS ANALİZİ

Öz

İstanbul Büyük Şehir Belediyesi tarafından Doğuş İnşaat firmasına ihale edilen Üsküdar-Çekmeköy Metro hattı 20 km uzunluğa sahip çift tüp şeklinde tünellerden oluşmaktadır. Karmaşık bir jeolojiye sahip olan çalışılan güzergah boyunca kumtaşı, kil taşı, şeyl, kireçtaşı, çamurtaşı, konglomera ve yer yer diyabaz dayklarına rastlanmaktadır. Tünellerin kazısı 6,57 m tam cepheli tünel açma (TBM) makineleri tarafından yapılmaktadır. Bu çalışmada, TBM’in veri depolama sistemi tarafından kayıt edilen kazı parametreleri (itme kuvveti, tork, kesici kafa dönme hızı, ilerleme hızı, alarmlar vb.) analiz edilmiştir. Her ring kazısı için iş-zaman etüdü verileri incelenerek makineden faydalanma oranı belirlenmiştir. Makine performansını önemli ölçüde etkileyen arıza ve duraklamaların neler olduğu ve her birinin yüzdesel dağılımları belirlenmiştir. Bu çalışma, karmaşık olarak gözüken TBM verilerinin nasıl sadeleştirileceğini, performans ve arıza verilerinin pratik olarak nasıl değerlendirilebileceğini göstermektedir.

Anahtar Kelimeler

• Tam cepheli tünel açma makinesi
• performans analizi
• makineden faydalanma oranı
• makine arızaları

Performance Analysis of Earth Pressure Balance Machine (EPB-TBM) used in Üsküdar-Ümraniye- Çekmeköy Metro Tunnel

Öz

Üsküdar-Çekmeköy metro line of 20 km having twin tubes is commissioned to Doğuş Construction Company by Istanbul Metropolitan Municipality authorities. During the excavation, Tunnel Boring Machines (TBMs) encountered with complex geology consisting of sandstone, siltstone, shale, limestone, conglomerate, and diabase dykes. Two TBMs having diameters of 6.57 m are used in excavation of Üsküdar-Çekmeköy metro line. In this study, performance analysis is carried out along the tunnel route between Üsküdar-Çarsi stations by analyzing TBM data (thrust, torque, speed of cutter head revolution, advance rate, alarms etc.). Machine utilization time is also determined and, the breakdowns and stoppage times are deeply analyzed to identify their effects on TBM performance. This study illustrates how to simplify and practically usage of the TBM performance and breakdown data.

Anahtar Kelimeler

• Full face tunnel boring machines
• performance analysis
• machine utilization time
• machine breakdown

Kaynakça

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