دانلود مقاله ISI انگلیسی شماره 113016
ترجمه فارسی عنوان مقاله

اهمیت تجزیه و تحلیل عددی برای تعیین سیستم های پشتیبانی در تونل زنی: مطالعه مقدماتی از تونل ترابزون-گوموشها، ترکیه

عنوان انگلیسی
Importance of numerical analyses for determining support systems in tunneling: A comparative study from the trabzon-gumushane tunnel, Turkey
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
113016 2018 50 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of African Earth Sciences, Volume 143, July 2018, Pages 253-265

ترجمه کلمات کلیدی
روش تجربی، روش عنصر محدود تجزیه و تحلیل عددی، سیستم پشتیبانی، تونلینگ،
کلمات کلیدی انگلیسی
Empirical method; Finite element method; Numerical analyses; Support system; Tunneling;
پیش نمایش مقاله
پیش نمایش مقاله  اهمیت تجزیه و تحلیل عددی برای تعیین سیستم های پشتیبانی در تونل زنی: مطالعه مقدماتی از تونل ترابزون-گوموشها، ترکیه

چکیده انگلیسی

In this study, we determined the consistency of support elements from empirical rock mass classification systems, to obtain optimum support elements via comparative numerical analyses. For this purpose, the Macka tunnel, on the Trabzon-Gumushane highway and still under construction, was selected as the study area. Along the tunnel route, Late Cretaceous-aged Catak, Macka and Esiroglu Formations crop out. All the formations are cut by a Late Cretaceous Kackar Rhyodacite. Laboratory and field studies were done to determine the properties of the rock material and discontinuities. The results were used to define rock mass properties. Preliminary support systems were defined by using Rock Mass Rating (RMR), Rock Mass Quality (Q) and Rock Mass Index (RMi) systems, respectively. The suggested support elements of all classification systems were in turn evaluated using the Finite Elements Method (FEM), allowing the thickness of the plastic zone and total displacement values to be determined. Results of the analyses showed that it is possible to remove the instabilities around the tunnel section by applying lower numbers of support elements. When using the support systems from the numerical analyses it was found that the optimum support systems were compatible with the support systems suggested by the RMi system. Besides, when the shotcrete strength was increased to 40 MPa, the displacements and thickness of the plastic zone around the tunnel could be reduced to minimal values.