Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Sadegh Tarigh Azali"'
Publikováno v:
Rock Mechanics and Rock Engineering. 55:7675-7693
Publikováno v:
Researches in Earth Sciences. 10:129-142
Autor:
Sadegh Tarigh Azali, Shokrollah Zare, Rafael Jimenez, Emad Khorasani, Masoud Zare Naghadehi, Seyed-Mohammad Esmaeil Jalali
Publikováno v:
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering. 171:422-438
In this paper, the performance of an earth pressure balance tunnel-boring machine (EPB-TBM) during tunnel construction is analysed. A case study with data from the east–west part of the Tehran metro line 7 is employed to develop a methodology. Seve
Publikováno v:
Rock Mechanics and Rock Engineering. 50:2929-2953
Thorough and realistic performance predictions are among the main requisites for estimating excavation costs and time of the tunneling projects. Also, NTNU/SINTEF rock drillability indices, including the Drilling Rate Index™ (DRI), Bit Wear Index
Publikováno v:
Bulletin of Engineering Geology and the Environment. 78:605-616
Mechanized tunneling through clayey formations is threatened by encountering the clogging problem. Adhesion stress, as the tendency between clay and a metal surface, leads to clogging between TBM and excavated materials. Some empirical clogging class
Publikováno v:
Tunnelling and Underground Space Technology. 61:233-246
Wear of cutting tools and other components of the pressurized face tunnel boring machine which come in contact with the muck is an important parameter in soft ground tunneling. This is due to the need for cutterhead inspection and tool maintenance un
Publikováno v:
Bulletin of Engineering Geology and the Environment. 75:841-851
Drilling, blasting and mechanical methods using road headers or tunnel boring machines (TBMs) are among the methods used for underground excavation of rock and soil. The interaction between the tools used and the ground leads to fragmentation of rock
Publikováno v:
Geomechanics and Tunnelling. 8:239-247
Accurate estimation of rate of penetration (ROP), daily rate of advance (AR), and cutter cost/life is necessary for the justification and successful use of a TBM on any tunneling project. Various models have been introduced over the years to provide
Publikováno v:
Engineering Geology. 166:170-185
The essential requirements of a successful TBM tunneling operation are the complete characterization of the ground and the thorough identification of geological and geotechnical risks. These besides other information are needed for selecting the righ
Autor:
Sadegh Tarigh Azali, Hossein Mirmehrabi, Jafar Hassanpour, Gholam Reza Lashkaripour, Mohammad Ghafoori
Publikováno v:
Environmental Earth Sciences. 66:529-535
Occurrence of hydrogen sulfide gas (H2S) is one of the most important engineering geological hazards during tunneling. Its hazards and consequent challenges are very difficult and costly to solve. During site investigation, one of the tasks for engin