Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Pooyan Asadollahi"'
Publikováno v:
Journal of Hydraulic Research. 49:750-756
Block Stability in 3 Dimensions (BS3D) is an incremental-iterative algorithm and code to analyse general failure modes of rock blocks subjected to generic forces, including non-conservative forces such as water pressure. This algorithm is used to inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14465de306e994fa1819d2bce774573f
https://doi.org/10.1080/00221686.2011.618055
https://doi.org/10.1080/00221686.2011.618055
Autor:
Fulvio Tonon, Pooyan Asadollahi
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences. 47:1384-1390
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed2bddeb3b63f03c228ad51b4e0ba14c
https://doi.org/10.1016/j.ijrmms.2010.07.009
https://doi.org/10.1016/j.ijrmms.2010.07.009
Autor:
Pooyan Asadollahi, Fulvio Tonon
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 36:50-61
In order to analyze the stability of a 3D rock block using a limiting equilibrium method, some simplifications must be introduced, such as neglecting the effects of deformability of the rock block, fractures, and the surrounding rock mass, the progre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c542b8ce9c374a764a9ff8ba638ba3ed
https://doi.org/10.1002/nag.992
https://doi.org/10.1002/nag.992
Autor:
Fulvio Tonon, Pooyan Asadollahi
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 35:1334-1346
Among the constitutive models for rock fractures developed over the years, Barton's empirical model has been widely used. Although Barton's failure criterion predicts peak shear strength of rock fractures with acceptable precision, it has some limita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a47622e8a56bab248a9e37c401909661
https://doi.org/10.1002/nag.960
https://doi.org/10.1002/nag.960
Autor:
Pooyan Asadollahi, Fulvio Tonon
Publikováno v:
Engineering Geology. 113:11-32
Barton's original model is modified in order to address the following limitations: the peak shear displacement is independent of normal stress and is zero for sawed fractures; for post-peak shear strength, Barton suggested a zero mobilized Joint Roug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d5370f3955ac855b67402295b62b92b
https://doi.org/10.1016/j.enggeo.2010.01.007
https://doi.org/10.1016/j.enggeo.2010.01.007
Autor:
Fulvio Tonon, Pooyan Asadollahi
In stability analysis of rock blocks, the deformability of the blocks can conveniently be simulated using the boundary element method (BEM). However, all boundary conditions are given as stresses. Thus, the displacement solution is not unique. In thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12a96302978ef795401adb82ce25e924
http://hdl.handle.net/11390/1199258
http://hdl.handle.net/11390/1199258
Among the constitutive models for rock fractures developed over the years, Barton’s empirical model has been widely used. Although Barton’s failure criterion predicts peak shear strength of rock fractures with acceptable precision, it has some li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e0b9e2284ef0e2e873e9753deedf548
http://hdl.handle.net/11390/1199240
http://hdl.handle.net/11390/1199240
Publikováno v:
Tunnelling and Underground Space Technology. 21:375
By the use of convergence-confinement method, three-dimensional problem of tunnel excavation is simulated by an equivalent two-dimensional plane strain analysis. In this method, the evaluation of the convergence occurred before the time support start
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83c7e5c26dffdaf6ac25a8c64fe08841
https://doi.org/10.1016/j.tust.2005.12.190
https://doi.org/10.1016/j.tust.2005.12.190
Autor:
Roozbeh Foroozan, Pooyan Asadollahi
Publikováno v:
Tunnelling and Underground Space Technology. 21:236
Evaluating the rock mass properties is a crucial stage in designing support requirements in the tunnelling projects. A well known approach, based on engineering classification systems, is frequently being used by tunnel designers. In recent years the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::862a48c840533c71348691363bc238ee
https://doi.org/10.1016/j.tust.2005.12.015
https://doi.org/10.1016/j.tust.2005.12.015