The deformation mechanism of a high rockfill dam during the construction and first impounding

Document Type : Article

Authors

Geotechnical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

The Masjed-e-Soleyman dam is a high rockfill dam with clay core, located in Iran. During construction and first impounding, a considerably high excess pore water pressure has been developed inside the core and has been being dissipated with a very slow rate, so the consolidation deformations have been insignificant. However, there have been reports of noticeable internal deformations in the dam, the crest has also exhibited quick settlements during the first impounding. The main objective of this paper was to identify the deformation mechanism of this dam. For this purpose, the data recorded by its instruments were carefully studied and then a three-dimensional numerical model of the dam was developed. The mechanical behavior of materials was idealized by a hardening strain constitutive model. A numerical method was proposed, based on this constitutive model and Rowe’s stress–dilatancy theory, to simulate the deformation behavior of coarse-grained materials, like rockfills, due to particle size distribution, particle breakage, rotation, and rearrangement under shearing. The results show that significant development of pore pressure in the core and its insignificant dissipation, plastic shear deformations inside the core and extensive collapse settlements of the upstream shell are the main causes influencing the deformation mechanism.

Keywords

Main Subjects


References
1. Cetin, H., Laman, M., and Ertunc, A. Settlement and
slaking problems in the world's fourth largest rock-
ll dam, the Ataturk Dam in Turkey", Engineering
Geology, 56, pp. 225{242 (2000).
2. Xing, H.F., Gong, X.N., Zhou, X.G., and Fu, H.F.
Construction of concrete-faced rock ll dams with
weak rocks", J. Geotech. Geoenviron. Eng., 132(6),
pp. 778{785 (2006).
3. Costa, L.M. and Alonso, E.E. Predicting the behavior
of an earth and rock ll dam under construction",
Journal of Geotechnical and Geoenvironmental Engineering,
ASCE, 135(7), pp. 851-862 (2009).
4. Akhtarpour, A. and Khodaii, A. A study of the
seismic response of asphaltic concrete used as a core in
rock ll dams", Journal of Seismology and Earthquake
Engineering, 16, pp. 169{184 (2014).
5. Wang, Z., Liu, S., Vallejo, L., and Wang, L. Numerical
analysis of the causes of face slab cracks in
Gongboxia rock ll dam", Engineering Geology, 181,
pp. 224{232 (2014).
6. Kim, Y.S., Seo, M.W., Lee, C.W., and Kang, G.C.
Deformation characteristics during construction and
after impoundment of the CFRD-type Daegok Dam,
Korea", Engineering Geology, 178, pp. 1{14 (2014).
7. Mahinroosta, R., Aliadeh, A., and Gatmiri, B. Simulation
of collapse settlement of rst lling in a high
rock ll dam", Engineering Geology, 187, pp. 32{44
(2015).
A. Akhtarpour and M. Salari/Scientia Iranica, Transactions A: Civil Engineering 27 (2020) 566{587 585
8. Marsal, R.J. Large scale testing of rock ll materials",
J. Soil Mech. Found. Div. ASCE, 93(2), pp. 27{43
(1967).
9. Marschi, N.D., Chan, C.K., and Seed, H.B. Evaluation
of properties of rock ll materials", J. Soil Mech.
Found. Div., ASCE, 98(1), pp. 95{114 (1972).
10. Indraratna, B., Wijewardena, L.S.S., and Balasubramaniam,
A.S. Large-scale triaxial testing of
greywacke rock ll", Geotechnique, 43(1), pp. 37{51
(1993).
11. Varadarajan, A., Sharma, K.G., Venkatachalam, K.,
and Gupta, A.K. Testing and modeling two rock ll
materials", J. Geotech. Geoenviron. Eng., 129(3), pp.
206{206 (2003).
12. Vasistha, Y., Gupta, A.K., and Kanwar, V. Medium
triaxial testing of some rock ll materials", Electron. J.
Geotech. Eng., 18(Bund. D), pp. 923{964 (2013).
13. Xiao, Y., Liu, H., Chen, Y., and Jiang, J. Strength
and deformation of rock ll material based on largescale
triaxial compression tests. I: in
uences of density
and pressure", Journal of Geotechnical and Geoenvironmental
Engineering, 140(12), Article ID 04014070
(2014).
14. Xiao, Y., Liu, H., Chen, Y., and Jiang, J. Strength
and deformation of rock ll material based on largescale
triaxial compression tests. II: in
uence of particle
breakage", Journal of Geotechnical and Geoenvironmental
Engineering, 140(12), Article ID 04014071
(2014).
15. Khoiri, M., Ou, C.Y., and Teng, F.C. A comprehensive
evaluation of strength and modulus parameters of
a gravelly cobble deposit for deep excavation analysis",
Engineering Geology, 174, pp. 61{72 (2014).
16. Duncan, J.M. and Chang, C.Y. Nonlinear analysis of
stress and strain in soils", J. Soil Mech. Found. Div.,
ASCE, 96(5), pp. 1629{53 (1970).
17. Lade, P.V. and Kim, M.K. Single hardening constitutive
model for soil, rock and concrete", Inter. J. Solids
and Structures, 32(14), pp. 1963{1978 (1995).
18. Nova, R. and Wood, D.M. A constitutive model for
sand in triaxial compression", Inter. J. for Numerical
and Analytical Methods in Geomechanics, 3(3), pp.
255{278 (1979).
19. Lade, P.V. and Duncan, J.M. Elastoplastic stressstrain
theory for cohesionless soil", J. Geotech. Engin.
Div., ASCE, 101(GT10), pp. 1037{1053 (1975).
20. Guo, R. and Li, G. Elasto-plastic constitutive model
for geotechnical materials with strain-softening behavior",
Comput. Geotech., 34, pp. 14{23 (2008).
21. Kulhawy, F.H. and Duncan, J.M. Stresses and movements
in Oroville dam", J. Soil Mech. Found. Div.,
ASCE, 98(7), pp. 653{665 (1972).
22. Escuder, I., Andreu, J., and Reche, M. An analysis of
stress-strain behaviour and wetting e ects on quarried
rock shells", Can. Geotech. J., 42(1), pp. 51{60 (2005).
23. Varadarajan, A., Sharma, K.G., Abbas, S.M., and
Dhawan, A.K. Constitutive model for rock ll materials
and determination", Int. J. Geomech., 6(4), pp.
226{237 (2006).
24. Veiskarami, M., Ghorbani, A., and Alavipour, M.R.
Development of a constitutive model for rock lls and
similar granular materials based on the disturbed state
concept", Front. Struct. Civ. Eng., 6(4), pp. 365{378
(2012).
25. Xu, M. and Song, E. Numerical simulation of the
shear behavior of rock lls", Comput. Geotech., 36(8),
pp. 1259{1264 (2009).
26. Xiao, Y., Liu, H., Chen, Y., and Jiang, J. Testing
and modeling of the state-dependent behaviors of
rock ll material", Comput. Geotech., 6(1), pp. 153{
165 (2014c).
27. Feda, J. Note on the e ect of grain-crashing on the
granular soil behavior", Engineering Geology, 63, pp.
93{98 (2002).
28. Miura, S., Yagi, K., and Asonuma, T. Deformationstrength
evaluation of crushable volcanic soils by laboratory
and in-situ testing", Soils Found., 43(4), pp.
47{57 (2003).
29. Einav, I. Breakage mechanics-Part I: Theory", J.
Mech. Phys. Solids, 55(6), pp. 1274{1297 (2007a).
30. Einav, I. Soil mechanics: Breaking ground", Philos.
Trans. R. Soc. London, Ser. A, 365(1861), pp. 2985{
3002 (2007).
31. Bandini, V. and Coop, M.R. The in
uence of particle
breakage on the location of the critical state line of
sands", Soils Found., 51(4), pp. 591{600 (2011).
32. Salim, W. and Indraratna, B. A new elastoplastic
constitutive model for coarse granular aggregates
incorporating particle breakage", Can. Geotech. J.,
41(4), pp. 657{671(2004).
33. Barden, L., McGown, A., and Collins, K. The collapse
mechanism in partly saturated soil", Engineering
Geology, 7(1), pp. 49{60 (1973)
34. Marsal, R.J., Mechanical Properties of Rock Fill, In:
R.C. Hirshfeld and S.J. Poulos, Eds., Embankment-
Dam Engineering, Casagrande Volume, John Wiley &
Sons Inc., N.Y., pp. 109{200 (1973).
35. Maswoswe, J. Stress paths for a compacted soil
during collapse due to wetting", PhD Thesis, Imperial
College, University of London (1985).
36. Egretli, I. and Singh, R.N. A laboratory investigation
into the e ects of air void and water saturation on the
collapse settlement of opencast mine back ll", Min.
Sci. Technol., 7, pp. 87{97 (1988).
37. Nouaouria, M.S., Guenfoud, M., and La , B. Engineering
properties of loess in Algeria", Engineering
Geology, 99(2), pp. 85{89 (2008).
38. Mahinroosta, R. and Oshtaghi, V. E ect of saturation
on the shear strength and collapse settlement of
gravelly material using direct shear test apparatus",
Sharif J. Sci. Technol., 29(1), pp. 103{114 (2013).
586 A. Akhtarpour and M. Salari/Scientia Iranica, Transactions A: Civil Engineering 27 (2020) 566{587
39. Squier, L.R. Load transfer in earth and rock ll dams",
J. Soil Mech. Found. Div., ASCE, 96(SM1), pp. 213{
233 (1970).
40. Hunter, G.J. The pre- and post-failure deformation
behaviour of soil slopes", PhD Thesis, University of
New South Wales, Australia (2003).
41. Nobari, E.S. and Duncan, J.M. E ect of reservoir
lling on stresses and movements in earth and rock-
ll dams", Report TE-72-1, University of California,
Department of Civil Engineering (1972).
42. Naylor, D.J., Maranha das Neves, E., Mattar, J.D.,
and Veiga Pinto, A.A. Prediction of construction
performance of Beliche Dam", Geotechnique, 36(3),
pp. 359{376 (1986).
43. Naylor, D.J., Maranha, J.R., Maranha das Neves, E.,
and Veiga Pinto, A.A. A back-analysis of Beliche
Dam", Geotechnique, 47(2), pp. 221{233 (1997).
44. Maranha das Neves, E. and Veiga Pinto, A. Modeling
collapse on rock ll dams", Comput. Geotech, 6, pp.
131{153 (1988).
45. Alonso, E.E., Olivella, S., and Pinyol, N.M. A review
of Beliche Dam", Geotechnique, 55(4), pp. 267{285
(2005).
46. Lloret, A. and Alonso, E.E. Consolidation of unsaturated
soils including swelling and collapse behavior",
Geotechnique, 30(4), pp. 449{477 (1980).
47. Oldecop, L.A. and Alonso, E.E. A model for rock ll
compressibility", Geotechnique, 51(2), pp. 127{139
(2001).
48. Oldecop, L.A. and Alonso, E.E. Suction e ects on
rock ll compressibility", Geotechnique, 53(2), pp. 289{
292 (2003).
49. Mahinroosta, R. and Alizadeh, A. Simulation of collapse
settlement in rock ll material due to saturation",
Inter. J. Civ. Engin., 10(2), pp. 102{108 (2012).
50. Itasca Consulting Group, Inc. FLAC3D, User's Manuals,
Minneapolis, Minnesota (2012).
51. Moshanir Power Engineering Consultants, Review on
Additional Laboratory Tests on Materials of Masjed-e-
Soleyman Dam, Tehran, Iran (1996).
52. Araei, A.A., Soroush, A., and Rayhani, M. Largescale
triaxial testingand numerical modeling of
rounded and angular rock ll materials", Scientia Iranica,
17(3), pp. 169{183 (2010).
53. Soroush, A. and Jannatiaghdam, R. Behavior of rock-
ll materials in triaxial compression testing", Inter. J.
Civ. Engin, 10(2), pp. 153{161 (2012).
54. Vermeer, P.A. and De Borst, R. Non-associated
plasticity for soils, concrete and rock", Heron., 29(3),
pp. 1{64 (1984).
55. Rowe, P.W. Stress-dilatancy, earth pressure and
slopes", J. Soil Mech. Found. Div., ASCE, 89(5), pp.
37{61(1963).
56. Karlsruhe University, Masjed-e-Soleyman Dam HPP:
Investigations on Coarse-grain Materials, Institute of
Soil and Rock Mechanics, Karlsruhe University, Germany
(1996).
57. Ramamurthy, T. and Gupta, K.K. Response paper
to how ought one to determine soil parameters to be
used in the design of earth and rock ll dams", In
Proceedings of Indian Geotechnical Conference, New
Delhi, India, 2, pp. 15{19 (1986).
58. Naderian, A.R. and Williams, D.J. Bearing capacity
of open coal-mine back ll materials", Trans. Inst. Min.
Metal, 106, pp. A30{A34 (1997).
59. Nahazanan, H., Clarke, S., Asadi, A., Yuso , Z.M.,
and Huat, B.K. E ect of inundation on shear strength
characteristics of mudstone back ll", Engineering Geology,
158, pp. 48{56 (2013).
60. Hasanzadehshooiili, H., Mahinroosta, R., Lakirouhani,
A., and Oshtaghi, V. Using arti cial neural network
(ANN) in prediction of collapse settlements of sandy
gravels", Arab. J. Geosci., 7(6), pp. 2303{2314 (2014).
61. Pagano, L., Sica, S., and Desideri, A. Representativeness
of measurements in the interpretation of earth
dam behavior", Canadian Geotechnical Journal, 43(1),
pp. 87{99 (2006).