Control of fault lay-out on seismic design of large underground caverns

Article


Ardeshiri-Lajimi, Saeid, Yazdani, Mahmoud and Assadi Langroudi, A. 2015. Control of fault lay-out on seismic design of large underground caverns. Tunnelling and Underground Space Technology. 50, pp. 305-316.
AuthorsArdeshiri-Lajimi, Saeid, Yazdani, Mahmoud and Assadi Langroudi, A.
Abstract

Although buried structures are generally believed to suffer a lesser degree of damage in the
event of earthquake - than that of over-ground structures - significant damage has been widely reported to
buried assets after major earthquakes, including the 1995 Kobe and the 2008 Wen-Chuan. Discontinuity
is one key feature of rock as the supporting medium around subsurface excavated spaces. Joints, faults
and bedding planes influence, by-and-large, the stability of structures made from/into rock. In particular,
fault system around underground caverns such as hydropower house has a marked control on assets’
seismic stability. This study builds on the current understanding through vigorous numerical modelling of
fault-structure system under seismic excitation. A parametric approach is followed to determine the most
critical layout of a single fault crossing a benchmark cavern. Fault system is systematically broken down
into several combinations of dips and intersection points with cavern wall. For each case, a nonlinear
dynamic analysis is conducted. To simulate the discontinuous medium, the hybrid finite difference –
discrete element code CA2 (Continuum Analysis 2 dimensional) is implemented. The work showed that,
similar to static conditions, fault influences the seismic stability of underground caverns through a
tendency in extending the plastic zones and increasing displacements as well as asymmetric distribution
of the latter and the former in rock medium. A 40° to 50° dip, single-point-intersection-on-crown k0=1
fault layout renders the most critical combination from both ultimate and serviceability limit states
perspective. Under earthquake loading conditions however, the critical limit states condition took place
for single fault intersected the cavern at heel and sidewall. The latter critical condition led to the tensile
failure of cavern right sidewall. For faults intersecting the carven crown and having a k0=0.5, collapse
would be more likely as fault dip increases. Collapse would be less likely with increasing dip for k0=0.5
fault crossing the bed and sidewall of caverns.

JournalTunnelling and Underground Space Technology
Journal citation50, pp. 305-316
ISSN08867798
Year2015
PublisherElsevier
Accepted author manuscript
License
CC BY-NC-ND
Digital Object Identifier (DOI)doi:10.1016/j.tust.2015.07.002
Publication dates
Online13 Aug 2015
Publication process dates
Deposited11 Apr 2016
Accepted07 Jul 2015
Permalink -

https://repository.uel.ac.uk/item/85506

  • 9
    total views
  • 53
    total downloads
  • 3
    views this month
  • 7
    downloads this month

Related outputs

A conceptual model for loess in England: Principles and applications
Assadi Langroudi, A. 2019. A conceptual model for loess in England: Principles and applications. Proceedings of the Geologists' Association. 130 (2), pp. 115-125.
Assessment of the Suitability of the Fall Cone Method to Replace the Casagrande Cup for Liquid Limit Determination of South African Soils
Theron, E., Stott, P. R., Vosloo, P. and Assadi Langroudi, A. 2019. Assessment of the Suitability of the Fall Cone Method to Replace the Casagrande Cup for Liquid Limit Determination of South African Soils. in: Proceedings of the 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering International Society for Soil Mechanics and Geotechnical Engineering.
Anisotropy in Sand–Fibre Composites and Undrained Stress–Strain Implications
Ghadr, S., Bahadori, H. and Assadi Langroudi, A. 2019. Anisotropy in Sand–Fibre Composites and Undrained Stress–Strain Implications. International Journal of Geosynthetics and Ground Engineering. 5 (Art. 23).
A Probabilistic Approach to the Spatial Variability of Ground Properties in the Design of Urban Deep Excavation
Herridge, J. B., Tsiminis, K., Winzen, J., Assadi Langroudi, A., McHugh, M., Ghadr, S. and Donyavi, S. 2019. A Probabilistic Approach to the Spatial Variability of Ground Properties in the Design of Urban Deep Excavation. Infrastructures. 4 (Art. 51).
Compacted Expansive Elastic Silt and Tyre Powder Waste
Ghadr, S., Mirsalehi, S. and Assadi Langroudi, A. 2019. Compacted Expansive Elastic Silt and Tyre Powder Waste. Geomechanics and Engineering. 18 (5), pp. 535-543.
Lime Cake as an Alternative Stabiliser for Loose Clayey Loams
Assadi Langroudi, A., Ghadr, S., Theron, E., Oderinde, S. A. and Katsipatakis, E. M. 2019. Lime Cake as an Alternative Stabiliser for Loose Clayey Loams. International Journal of Geosynthetics and Ground Engineering. 5 (Art. 22).
Effect of Grain Size and Shape on Undrained Behaviour of Sands
Ghadr, S. and Assadi Langroudi, A. 2019. Effect of Grain Size and Shape on Undrained Behaviour of Sands. International Journal of Geosynthetics and Ground Engineering. 5 (Art. 18).
Gaps in Particulate Matters: Formation, Mechanisms, Implications
Assadi Langroudi, A. and Theron, E. 2019. Gaps in Particulate Matters: Formation, Mechanisms, Implications. in: Proceedings of the 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering International Society for Soil Mechanics and Geotechnical Engineering.
A Conceptual Model for Climatic-responsive Vernacular Architectural Forms
Kamalifard, Solmaz and Assadi Langroudi, A. 2018. A Conceptual Model for Climatic-responsive Vernacular Architectural Forms. in: Elsharkaway, Heba, Zahiri, Sahar and Clough, Jack (ed.) International Conference for Sustainable Design of the Built Environment SDBE 2018: Proceedings SDBE. pp. 575-588
Structure-based hydro-mechanical properties of sand-bentonite composites
Ghadr, Soheil and Assadi Langroudi, A. 2018. Structure-based hydro-mechanical properties of sand-bentonite composites. Engineering Geology. 235, pp. 53-63.
Loess as a Collapsible Soil: Some Basic Particle Packing
Assadi Langroudi, A., Ng’ambi, Samson and Smalley, Ian 2017. Loess as a Collapsible Soil: Some Basic Particle Packing. Quaternary International. 469 (Part A), pp. 20-29.
A Study on the liquefaction risk in seismic design of foundations
Ardeshiri-Lajimi, Saeid, Yazdani, Mahmoud and Assadi Langroudi, A. 2016. A Study on the liquefaction risk in seismic design of foundations. Geomechanics and Engineering. 11 (6), pp. 805-820.
Shear Strength in Terms of Coulomb C-Intercept
Assadi Langroudi, A. 2014. Shear Strength in Terms of Coulomb C-Intercept. Journal of Geotechnical Geology. 9 (4), pp. 283-292.
Constraints in using site-won calcareous clayey silt (loam) as fill materials
Assadi Langroudi, A. and Jefferson, I. 2015. Constraints in using site-won calcareous clayey silt (loam) as fill materials. in: Winter, M. G., Smith, D. M., Eldred, P. J. L. and Toll, D. G. (ed.) Geotechnical Engineering for Infrastructure and Development ICE Publishing (Institute of Civil Engineers). pp. 1947-1952
Quantitative evaluation of microstructure characteristics of cement-consolidated soil
Assadi Langroudi, A. 2013. Quantitative evaluation of microstructure characteristics of cement-consolidated soil. Bulletin of Engineering Geology and the Environment. 73 (1), pp. 203-204.
Micromechanics of quartz sand breakage in a fractal context
Assadi Langroudi, A., Jefferson, Ian, O'hara-Dhand, Kenneth and Smalley, Ian 2013. Micromechanics of quartz sand breakage in a fractal context. Geomorphology. 211, pp. 1-10.
The response of reworked aerosols to climate through estimation of inter-particle forces
Assadi Langroudi, A. and Jefferson, I. 2016. The response of reworked aerosols to climate through estimation of inter-particle forces. International Journal of Environmental Science and Technology. 13 (4), pp. 1159-1168.