Volume 7, Issue 2
مرور بر اساس
ارسال های اخیر
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Numerical analysis of energy transmission through discontinuities and fillings in Kangir Dam
(Shahrood University of Technology, 2016-07-01)A considerable amount of energy is released in the form of shock wave from explosive charge detonation. Shock wave energy is responsible for the creation of crushing and fracture zone around the blast hole. The rest of the ...
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Estimation of groundwater inflow situation using fuzzy logic: a case study (Beheshtabad water conveying tunnel, Iran)
(Shahrood University of Technology, 2016-07-01)Water inflow is one of the most important challenges in the underground excavations. In addition to inducing working conditions and environmental problems, it decreases the stability and quality of the surrounding rocks. ...
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Permeability upscaling in fractured reservoirs using different optimized mother wavelets at each level
(Shahrood University of Technology, 2016-07-01)We use a multi-resolution analysis based on a wavelet transform to upscale a 3D fractured reservoir. This paper describes a 3D, single-phase, and black-oil geological model (GM) that is used to simulate naturally-fractured ...
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Role of smile correction in mineral detection on hyperion data
(Shahrood University of Technology, 2016-07-01)This work aims to extract the mineralogical constituents of the Lahroud Hyperion scene situated in the NW of Iran. Like the other push-broom sensors, Hyperion images suffer from spectral distortions, namely the smile effect. ...
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Semi-quantitative environmental impact assessment and sustainability level determination of coal mining using a mathematical model
(Shahrood University of Technology, 2016-07-01)Environmental impact assessment (EIA) has led to the dominance of planners on the natural environment of the regions, providing the possibility of continuously monitoring and controlling the status quo by management staff. ...
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Concentration and recycling of rare earth elements (REEs) from iron mine waste using a combination of physical separation methods
(Shahrood University of Technology, 2016-07-01)This study aims to investigate and optimize the effects of the main parameters including the particle size, gravity and magnetic separation combination, high gradient magnetic separation, magnetic field intensity, shaking ...
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Numerical investigation of effect of crack geometrical parameters on hydraulic fracturing process of hydrocarbon reservoirs
(Shahrood University of Technology, 2016-07-01)Hydraulic fracturing (HF), as a stimulation technique in petroleum engineering, has made possible the oil production from reservoirs with very low permeability. The combination of horizontal drilling and multiple HF with ...
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A comparative study of performance of K-nearest neighbors and support vector machines for classification of groundwater
(Shahrood University of Technology, 2016-07-01)The aim of this work is to examine the feasibilities of the support vector machines (SVMs) and K-nearest neighbor (K-NN) classifier methods for the classification of an aquifer in the Khuzestan Province, Iran. For this ...
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Estimation of penetration rate of tunnel boring machines using Monte-Carlo simulation method
(Shahrood University of Technology, 2016-07-01)One of the most important parameters used for determining the performance of tunnel boring machines (TBMs) is their penetration rate. The parameters affecting the penetration rate can be divided in two categories. The first ...
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Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution
(Shahrood University of Technology, 2016-07-01)This work was aimed to evaluate and compare the performances of the solvents D2EHPA (Di-(2-ethylhexyl) phosphoric acid), Cyanex 272 (bis (2,4,4-trimethylpentyl) phosphinic acid), and a mixture ...
