Volume 52, Issue 2
مرور بر اساس
ارسال های اخیر
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Back analysis of inter-ramp slope failure in Teghout copper mine
(University of Tehran, 2018-12-01)Slope stability is one of the most important issues in open pit mining design. The main purpose of any open pit mine design is to propose an optimal excavation configuration, considering safety, ore recovery and financial ...
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Grade estimation of Zu2 Jajarm deposit by considering imprecise variogram model parameters based on the extension principle
(University of Tehran, 2018-12-01)Nowadays, kriging has been accepted as the most common method of grade estimation in mineral resource evaluation stage. Access to the crisp assay data and a variogram model are the necessary means for the utilization of ...
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Comparative evaluation of Schmidt hammer test procedures for prediction of rocks strength
(University of Tehran, 2018-12-01)Uniaxial compressive and Brazilian tensile strengths (UCS and BTS) of rocks are considered important properties in the design of most the geotechnical projects that interact with rock such as slope stability and underground ...
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The application of Committee machine with particle swarm optimization to the assessment of permeability based on thin section image analysis
(University of Tehran, 2018-12-01)Permeability is the ability of porous rock to transmit fluids and one of the most important properties of reservoir rock because oil production depends on the permeability of reservoirs. Permeability is determined using a ...
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Implementation of Hyperbolic Tangent Function to Estimate Size Distribution of Rock Fragmentation by Blasting in Open Pit Mines
(University of Tehran, 2018-12-01)Rock fragmentation is one of the desired results of rock blasting. So, controlling and predicting it, has direct effects on operational costs of mining. There are different ways that could be used to predict the size ...
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Developing a 3D stochastic discrete fracture network model for hydraulic analyses
(University of Tehran, 2018-12-01)Fluid flow in jointed rock mass with impermeable matrix is often controlled by joint properties, including aperture, orientation, spacing, persistence and etc. On the other hand, since the rock mass is made of heterogeneous ...
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Investigating the Effect of Sedimentary Basin on Consolidation of Kerman Fine-Grained Soils
(University of Tehran, 2018-12-01)In this research, the effects of a sedimentary basin, environmental conditions, and the passage of time were investigated on consolidation processes and engineering characteristics of fine-grained soils in Kerman city. For ...
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Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine
(University of Tehran, 2018-12-01)Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers ...
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Tunnel design and construction process in difficult ground conditions with Analysis of Controlled Deformations (ADECO) approach; a Case Study
(University of Tehran, 2018-12-01)The 10.6 km long Sabzkuh water conveyance tunnel is currently under construction in High Zagros structural zone, located in western Iran, has used conventional (in section T1) and mechanized (in section T2) methods. The ...
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Computational and Programming Aspects of Transition Elements in a Three-dimensional Finite Element Program
(University of Tehran, 2018-12-01)The performance of any finite element (FE) structural analysis is directly related to the global number of nodes and degrees of freedom (DOF) of the discretized structure and mesh distribution attributes. It is obvious ...
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Soil Arching Behind Retaining Walls under Active Translation Mode: Review and New Insights
(University of Tehran, 2018-12-01)Granular materials have a tendency to exhibit an arching effect by which the load is transferred from yielding parts to adjacent stationary parts. Retaining walls are among those structures that the soil arching plays an ...
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Hydrothermal Gold Mineralization and Some Features of Ore Mineral at Onzon-Kanbani Area, Central Myanmar
(University of Tehran, 2018-12-01)Onzon-Kanbani area is a western flank of Mogok Metamorphic Belt where gold mineralization is hosted as auriferous quartz-vein with epithermal low-sulphidation characters. Mineralization is closely associated with NE-SW ...
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The performance of bolt-reinforced and shotcreted in-stope pillar in a rockburst prone areas
(University of Tehran, 2018-12-01)Historically, the design of the in-stope pillar in underground excavations has been based on empirical formulae and numerical modelling. Although these design methods have been extensively applied in several gold mines in ...



