EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WEST SECTION)

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

BAKHSHANDEH AMNIEH H.; ZAMZAM M.S.; MOUSAVI E.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Sharif Journal of Civil Engineering Year:2015 | Volume:31-2 | Issue:3.1 Page(s): 137-145

Download Full-Text

Persian Verion

View:

1,318

Download:

Cites:

Information Journal Paper

Title

EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WEST SECTION)

Author(s)

BAKHSHANDEH AMNIEH H. | ZAMZAM M.S. | MOUSAVI E. | Issue Writer Certificate

Keywords

FACE OPTIMAL PRESSUREQ2

PLAX S 3DQ2

EPBQ2

LINE NO 7 TEHRAN SUBWAYQ2

Abstract

Tunnel face support during boring operations is gaining more interest as tunneling development expands towards geo-technically less appropriate zones with heavy traffic. Good tunnel face support is a pre-requisite for success- ful safe boring, and evaluating optimum pressure is an important factor in the performance of the Earth Pres- sure Balance (EPB) machine in urban tunneling. Ap- plying pressures lower than equilibrium results in face subsidence, while higher than equilibrium causes an up- lift in ground surface, leading in either case, to opera- tion disruption, floor subsidence and damage to nearby buildings. Optimum pressure for face support is evalu- ated here using analytical and numerical methods, and parameters such as soil physical and mechanical charac- teristics, height of over-burden, water table level, tunnel geometry, and traffic and structural loads. As the tun- nel for line 7 of the Tehran subway (Eastern-Western piece) was excavated in an urban zone, in this work, the Jancsecz analytical method was used to measure the re- quired pressure for the tunnel face support. The tunnel was bored using a 9/164m diameter ground pressure bal- ancing machine. The final tunnel cover was tetragonal in geometry, 35cm thick and 1.50m wide, making an out- side diameter of 8.85m for the tunnel. Data obtained for this study was obtained from 13 boreholes and 5 wells excavated deliberately along the tunnel. The flow di- rection of underground water about the tunneling zone was found to be north-east to south-west. Considering the average water level obtained from the boreholes, only 35% of the tunnel remains above water and 65% is below water level. To illustrate water pressure fluctuation, this was considered in the analytical method, but ignored in the numerical one, which employed PLAXIS3D soft- ware. When comparing the results, a pressure difference of 20-25 kPa was noted, indicating acceptable confor- mance of the data.

Cites

No record.

References

No record.

Cite

APA: Copy

BAKHSHANDEH AMNIEH, H., ZAMZAM, M.S., & MOUSAVI, E.. (2015). EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WEST SECTION). SHARIF: CIVIL ENINEERING, 31-2(3.1), 137-145. SID. https://sid.ir/paper/128126/en

Vancouver: Copy

BAKHSHANDEH AMNIEH H., ZAMZAM M.S., MOUSAVI E.. EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WEST SECTION). SHARIF: CIVIL ENINEERING[Internet]. 2015;31-2(3.1):137-145. Available from: https://sid.ir/paper/128126/en

IEEE: Copy

H. BAKHSHANDEH AMNIEH, M.S. ZAMZAM, and E. MOUSAVI, “EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WEST SECTION),” SHARIF: CIVIL ENINEERING, vol. 31-2, no. 3.1, pp. 137–145, 2015, [Online]. Available: https://sid.ir/paper/128126/en

Related Journal Papers