Volume 15 (2024)
Volume 14 (2023)
Volume 13 (2022)
Volume 12 (2021)
Volume 11 (2020)
Volume 10 (2019)
Volume 9 (2018)
Volume 8 (2017)
Volume 7 (2016)
Volume 6 (2015)
Volume 5 (2014)
Volume 4 (2013)
Volume 3 (2012)
Volume 2 (2011)
Volume 1 (2010)
Rock Mechanics
Discrete elements analysis of sand production mechanism in oil well considering effects of in situ stress and fluid pressure

masoud yazdani; Mohammad Fatehi Marji; Hamid Soltanian; Mehdi Najafi; Manouchehr Sanei

Articles in Press, Accepted Manuscript, Available Online from 22 January 2024


  Approximately 70% of the world's hydrocarbon fields are located in reservoirs with low-strength rocks such as sandstone. During the production of hydrocarbons from sandstone reservoirs, sand-sized particles may become dislodged from the formation, and enter the hydrocarbon fluid flow. Sand production ...  Read More

Investigation of External Work, Fracture Energy, and Fracture Toughness of Oil Well Cement Sheath using HCCD Test and CSTBD Test

Mohammad Omidi manesh; Vahab Sarfarazi; Nima Babanouri; Amir Rezaei

Volume 14, Issue 2 , April 2023, , Pages 619-634


  This work presents the hollow center cracked disc (HCCD) test and the cracked straight through Brazilian disc (CSTBD) test of oil well cement sheath using the experimental test and Particle Flow Code in two-dimensions (PFC2D) in order to determine mode I fracture toughness of cement sheath. The tensile ...  Read More

Investigation of Fracture Toughness of Shotcrete using Semi-Circular Bend Test and Notched Brazilian Disc test; Experimental Test and Numerical Approach

Mohammad Omidi manesh; Vahab Sarfarazi; Nima Babanouri; Amir Rezaei

Volume 14, Issue 1 , January 2023, , Pages 233-242


  This work presents the Semi-Circular Bend (SCB) test and Notched Brazilian Disc (NBD) test of shotcrete using experimental test and Particle Flow Code in two-dimensions (PFC2D) in order to determine a relation between mode I fracture toughness and the tensile strength of shotcrete. Firstly, the micro-parameters ...  Read More

Real-Scale Numerical Analyzing Dynamic Process of TBM Boring in Jointed Rock; a Case Study: Kerman Water Conveyance Tunnel in Iran

Morteza Karami; Shokrollah Zare; Jamal Rostami

Volume 13, Issue 3 , July 2022, , Pages 643-666


  One of the important cost items in mechanized tunneling is the cost of repairing or replacing the disc cutters that have suffered from normal wear during the boring of the hard abrasive rocks. For inspecting the health of the disc cutters, the boring operation shall be stopped, and after checking, the ...  Read More

Compressive Failure Analyses of Rock-Like Materials by Experimental and Numerical Methods

M. Davood Yavari; H. Haeri; V. Sarfarazi; M. Fatehi Marji; H. A. Lazemi

Volume 12, Issue 3 , July 2021, , Pages 769-783


  Investigating the crack propagation mechanism is of paramount importance in analyzing the failure process of most materials. This process may be exposed during each kind of loading on the materials. In this work, the cracking mechanism in rock-like materials is studied using the numerical methods and ...  Read More

Rock Mechanics
Discrete element modeling of explosion-induced fracture extension in jointed rock masses

M. Lak; M. Fatehi Marji; A.R. Yarahamdi Bafghi; A. Abdollahipour

Volume 10, Issue 1 , January 2019, , Pages 125-138


  The explosion process of explosives in a borehole applies a very high pressure on its surrounding rock media. This process can initiate and propagate rock fractures, and finally, may result in the rock fragmentation. Rock fragmentation is mainly caused by the propagation of inherent pre-existing fractures ...  Read More