Search Results - "Rostami, Jamal"

Evaluation of TBM Cutter Wear in Naghadeh Water Conveyance Tunnel and Developing a New Prediction Model by Barzegari, Ghodrat, Khodayari, Jafar, Rostami, Jamal

“…Replacing worn disc cutters in a tunnel boring machine (TBM) operation is a time-consuming and expensive process. This article presents the study of disc…”
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Failure Characteristics of Granite Influenced by Sample Height-to-Width Ratios and Intermediate Principal Stress Under True-Triaxial Unloading Conditions by Li, Xibing, Feng, Fan, Li, Diyuan, Du, Kun, Ranjith, P. G., Rostami, Jamal

“…The failure modes and peak unloading strength of a typical hard rock, Miluo granite, with particular attention to the sample height-to-width ratio (between 2…”
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Introduction of a modified QTBM model for predicting TBM penetration rate in rock, based on data from mechanized tunneling projects in Iran by Hassanpour, Jafar, Kazemi, Chamran, Rostami, Jamal

“…One of the TBM performance prediction models that has been introduced in recent years and used for estimating penetration rate of TBM in hard rock conditions…”
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The Use of a Roadheader Simulator in Research of Dynamics and Energy-Consumption of Excavating Underground Roadways and Tunnels by Cheluszka, Piotr, Remiorz, Eryk, Rostami, Jamal

“…Boom-type roadheaders are commonly used for excavation of roadways in underground mines, tunnels, and other architectural structures using trenchless…”
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A Closer Look into Chip Shape/Size and Efficiency of Rock Cutting with a Simple Chisel Pick: A Laboratory Scale Investigation by Mohammadi, Mehdi, Khademi Hamidi, Jafar, Rostami, Jamal, Goshtasbi, Kamran

“…Chip geometry can play a crucial role in understanding the rock cutting efficiency in mechanical excavation. In this study, the shape and size distribution of…”
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Evaluation of fine material and chip formation in rock cutting with a conical tool by Kadkhodaei, Mohammad Hossein, Ghasemi, Ebrahim, Hamidi, Jafar Khademi, Rostami, Jamal

“…The production of fines and chips during rock cutting plays an essential role in the efficiency of rock cutting, which in turn impacts productivity and…”
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Prediction of TBM jamming risk in squeezing grounds using Bayesian and artificial neural networks by Rohola Hasanpour, Jamal Rostami, Jürgen Schmitt, Yilmaz Ozcelik, Babak Sohrabian

“…This study presents an application of artificial neural network (ANN) and Bayesian network (BN) for evaluation of jamming risk of the shielded tunnel boring…”
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Examining the effect of adverse geological conditions on jamming of a single shielded TBM in Uluabat tunnel using numerical modeling by Rohola Hasanpour, Jürgen Schmitt, Yilmaz Ozcelik, Jamal Rostami

“…Severe shield jamming events have been reported during excavation of Uluabat tunnel through adverse geological conditions, which resulted in several stoppages…”
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Prediction of earth pressure balance for EPB-TBM using machine learning algorithms by Samadi, Hanan, Hassanpour, Jafar, Rostami, Jamal

“…Face stability control of excavation with earth pressure balance machine (EPB) approach is the best available method to reduce the ground deformation and…”
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A Closer Look at the Design of Cutterheads for Hard Rock Tunnel-Boring Machines by Rostami, Jamal, Chang, Soo-Ho

“…The success of a tunnel-boring machine （TBM） in a given project depends on the functionality of all components of the system, from the cutters to the backup…”
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Statistical Analysis of the Capabilities of Various Pattern Recognition Algorithms for Fracture Detection Based on Monitoring Drilling Parameters by Liu, Wenpeng, Rostami, Jamal, Ray, Asok, Elsworth, Derek

“…Ground conditions, including characteristics of fractures, joints, bed separations, and strengths of rock layers, are critical factors for proper design of…”
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Simulation of Complex Support Systems for Large Span Tunnels: Investigation on Support Interferences and Effects of Constitutive Models by Salehi, Bahram, Golshani, Aliakbar, Rostami, Jamal, Schneider-Muntau, Barbara

“…Ground settlement control is a critical aspect in underground projects with shallow overburden. In tunnels with large span, the use of common support elements…”
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Assessment of shear strength of fine-grained and coarse-grained soil using actual EPB-TBM operating data by Samadi, Hanan, Hassanpour, Jafar, Rostami, Jamal

“…The necessity of predicting geotechnical parameters in soft ground tunnelling is crucial for selecting the appropriate tunnel boring machine (TBM), evaluating…”
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Study of Dominant Factors Affecting Cerchar Abrasivity Index by Rostami, Jamal, Ghasemi, Amireza, Alavi Gharahbagh, Ehsan, Dogruoz, Cihan, Dahl, Filip

“…The Cerchar abrasion index is commonly used to represent rock abrasion for estimation of bit life and wear in various mining and tunneling applications…”
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Prediction of flyrock distance induced by mine blasting using a novel Harris Hawks optimization-based multi-layer perceptron neural network by Bhatawdekar Ramesh Murlidhar, Hoang Nguyen, Jamal Rostami, XuanNam Bui, Danial Jahed Armaghani, Prashanth Ragam, Edy Tonnizam Mohamad

“…In mining or construction projects, for exploitation of hard rock with high strength properties, blasting is frequently applied to breaking or moving them…”
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Assessing Effectiveness of Various Wear-Resistant Materials Used as Hard Facings in Mining Applications by Hu, Wei, Rostami, Jamal, Frough, Omid

“…Characterizing the abrasiveness of soil/rock and the allowable wear of hard-facing products in various conditions is a critical factor in selection of the best…”
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Application of new void detection algorithm for analysis of feed pressure and rotation pressure of roof bolters by Liu, Wenpeng, Rostami, Jamal, Keller, Eric

“…Roof and rib instability is an important issue in underground mining. To optimize ground support design, enhance ground stability, and reduce the possibility…”
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Use of GIS and BIM for the integration of tunnel design and construction process in conventional tunneling by Hedayatzadeh, Mansour, Rostami, Jamal, Sarhosis, Vasilis, Nematollahi, Mojtaba, Hajiantilaki, Nabiollah, Shafiepour, Abouzar

“…This paper presents the development of a framework for the parametric design of tunnels using geographic information system (GIS) mapping and building…”
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Rock characterization while drilling and application of roof bolter drilling data for evaluation of ground conditions by Jamal Rostami, Sair Kahraman, Ali Naeimipour, Craig Collins

“…Despite recent advances in mine health and safety, roof collapse and instabilities are still the leading causes of injury and fatality in underground mining…”
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Characterization of Respirable Dust Generated from Full Scale Cutting Tests in Limestone with Conical Picks at Three Stages of Wear by Syd Slouka, Jürgen Brune, Jamal Rostami, Candace Tsai, Evan Sidrow

“…Respirable rock dust poses serious long-term health complications to workers in environments where mechanical rock excavation is utilized. The purpose of this…”
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