Engineering geology and geotechnical characterization of Tabriz Metro Line 2, Iran
Ali Alizadeh,Souheila Buzari,Yousef Sattarzadeh,Mohsen Pourkermani +3 more
- Vol. 3, Iss: 5, pp 1-13
TLDR
In this article, a study was performed in order to determine the engineering geology and geotechnical details of soils and rocks along Tabriz Metro Line 2(TML2) by using the information and raw data which were acquired by borehole drilling and all field and laboratory tests in the study area.Abstract:
The present study was performed in order to determine the engineering geology and geotechnical details of soils and rocks along Tabriz Metro Line 2(TML2) by using the information and raw data which were acquired by borehole drilling and all field and laboratory tests in the study area. The minimum and maximum depths of the boreholes were 15 and 40 m, respectively. The results of their analysis revealed that geologically, the areas of metro route, mainly formed by alternating layers of claystone, siltstone, marl, and conglomerate, covered mainly by the alluvial deposits and in addition to older, dextral, strike-slip North Tabriz Fault (NTF) which is a major and most important geological structure of Tabriz area, there are also many minor and generally young and seismically active faults. The results of investigation on the groundwater depth in boreholes of TML2 also indicated that the groundwater depth varies between 1.5 and 30 m, along the route of metro. Eventually, based on the standard penetration test values (N-SPT), it was revealed that soils of the western parts of TML2 are in the group of dense to very dense, the central parts are in the group of very dense (Bazaar area) and dense (Fahmideh area), and the eastern parts are very dense. And finally the results achieved from determining groundwater sulfate values according to Concrete Code of Iran (CCI) indicated that the amount of soluble sulfate in the soil is mild to extremely high. Accordingly, the amount of sulfate increases from the western to the eastern parts. So that, this value is between 200 and 26,500 ppm. Based on these studies, the average of sulfate in the western, central and eastern parts is, respectively, 1118, 1275 and 4840 ppm. Thus, the groundwater in the east part is highly aggressive, and deterioration of concrete lining of the tunnel is expected in the near future.read more
Citations
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A comparative approach of support vector machine kernel functions for GIS-based landslide susceptibility mapping
Khalil Valizadeh Kamran,Bakhtiar Feizizadeh,Bakhtiar Feizizadeh,Behnam Khorrami,Yousef Ebadi +4 more
TL;DR: In this article, the authors used Support Vector Machine (SVM) kernel functions for landslide susceptibility mapping (LSM) over the Tabriz Basin (TB) and found that the polynomial-degree-2 (PKF-2) model (AUC 0.9688) outperforms the rest of the utilized kernels.
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Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil
TL;DR: In this paper , the reflected and transmitted acoustic wave pressure variations are investigated exclusively for a multilayer soil buried tunnel, which contains the tunnel lining, surrounding soil, and the air inside the tunnel and at the ground surface.
Journal ArticleDOI
Investigation of acoustic waves behavior of an underground tunnel in a multilayer soil
TL;DR: In this article , the reflected and transmitted acoustic wave pressure variations are investigated exclusively for a multilayer soil buried tunnel, which contains the tunnel lining, surrounding soil, and the air inside the tunnel and at the ground surface.
References
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