EFFECTS OF ROUND LENGTH AND EXCAVATION PHASES IN THE NATM INDUCED SURFACE SETTLEMENT- LINE 4 OF TEHRAN METRO

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SHARIFZADEH MOSTAFA; TASOUJIZADEH M.; AFIFIPOUR M.

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Paper Information

Journal: IRANIAN JOURNAL OF MINING ENGINEERING (IRJME) Year:2011 | Volume:5 | Issue:10 Page(s): 39-46

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Title

EFFECTS OF ROUND LENGTH AND EXCAVATION PHASES IN THE NATM INDUCED SURFACE SETTLEMENT- LINE 4 OF TEHRAN METRO

Author(s)

SHARIFZADEH MOSTAFA | TASOUJIZADEH M. | AFIFIPOUR M. | Issue Writer Certificate

Keywords

NATM TUNNELINGQ3

ROUND LENGTHQ3

PLAXIS 3D SOFTWAREQ3

SURFACE SETTLEMENTQ3

EXCAVATION PHASESQ3

Abstract

In order to control settlement induced by tunneling in urban area, effective parameters in the excavation procedures should be determined with respect to the geotechnical properties and construction methods. In NATM, ROUND LENGTH and sequence of EXCAVATION PHASES are the significant parameters that affect on tunneling economically and technically. These two factors have a great relationship with time and cost of tunneling projects. Therefore, determination the optimum amount of those parameters is the main challenge in such projects. In this paper, the effects of ROUND LENGTH and EXCAVATION PHASES on SURFACE SETTLEMENT in line four of Tehran metro, still in construction, were evaluated. To do the analyses, a three-dimensional finite element package was used to simulate the tunnel operations for different number of ROUND LENGTH. The results showed that, regarding to the geotechnical properties and tunnel dimensions in line four areas, the ROUND LENGTH was determined conservatively. Therefore, it can be suggested that in order to improve efficiency, the ROUND LENGTH is determined 2 and 3 meter in upper and lower parts of tunnel cross-section, respectively.

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APA: Copy

SHARIFZADEH, MOSTAFA, TASOUJIZADEH, M., & AFIFIPOUR, M.. (2011). EFFECTS OF ROUND LENGTH AND EXCAVATION PHASES IN THE NATM INDUCED SURFACE SETTLEMENT- LINE 4 OF TEHRAN METRO. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), 5(10), 39-46. SID. https://sid.ir/paper/117143/en

Vancouver: Copy

SHARIFZADEH MOSTAFA, TASOUJIZADEH M., AFIFIPOUR M.. EFFECTS OF ROUND LENGTH AND EXCAVATION PHASES IN THE NATM INDUCED SURFACE SETTLEMENT- LINE 4 OF TEHRAN METRO. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME)[Internet]. 2011;5(10):39-46. Available from: https://sid.ir/paper/117143/en

IEEE: Copy

MOSTAFA SHARIFZADEH, M. TASOUJIZADEH, and M. AFIFIPOUR, “EFFECTS OF ROUND LENGTH AND EXCAVATION PHASES IN THE NATM INDUCED SURFACE SETTLEMENT- LINE 4 OF TEHRAN METRO,” IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), vol. 5, no. 10, pp. 39–46, 2011, [Online]. Available: https://sid.ir/paper/117143/en

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