Numerical evaluation of a multiple soil barrier system preventing water infiltration

Y. Takayama, Y. Ikuta, A. Iizuka, K. Kawai, T. Taki, R. Sakao, Yasuaki Ichikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, a multiple unsaturated soil barrier system consisting of multiple layers of gravel, sand, decomposed granite soil, and bentonite mixture soil is considered as a hardly permeable covering to prevent rainwater from infiltrating into waste deposits. Water infiltration is prevented due to both the low permeability of the bentonite mixture soil layer and a capillary barrier with different water-retention capabilities. A series of numerical simulations was carried out to evaluate the performance of the barrier system using a saturated/unsaturated soil/water coupled FE computation technique. Impermeability of the barrier system is shown as a graphical chart with rainfall duration on the x-axis and rainfall intensity on the y-axis. The simulation results show that the capillary barrier is a key parameter in evaluating the long-term performance of the barrier system. Results also confirm that the barrier system can work well against the maximum intensity of the rainfall recorded in Nigyo-toge.

Original languageEnglish
Title of host publicationUnsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014
PublisherTaylor and Francis - Balkema
Pages659-665
Number of pages7
Volume1
ISBN (Print)9781138026896
Publication statusPublished - 2014
Event6th International Conference on Unsaturated Soils, UNSAT 2014 - Sydney, NSW, Australia
Duration: Jul 2 2014Jul 4 2014

Other

Other6th International Conference on Unsaturated Soils, UNSAT 2014
CountryAustralia
CitySydney, NSW
Period7/2/147/4/14

Fingerprint

infiltration (hydrology)
infiltration
bentonite
rain intensity
granite soils
rainfall duration
soil
rainfall
water
water retention
precipitation intensity
rainwater
gravel
simulation
permeability
granite
soil water
sand
rain
evaluation

ASJC Scopus subject areas

  • Soil Science

Cite this

Takayama, Y., Ikuta, Y., Iizuka, A., Kawai, K., Taki, T., Sakao, R., & Ichikawa, Y. (2014). Numerical evaluation of a multiple soil barrier system preventing water infiltration. In Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014 (Vol. 1, pp. 659-665). Taylor and Francis - Balkema.

Numerical evaluation of a multiple soil barrier system preventing water infiltration. / Takayama, Y.; Ikuta, Y.; Iizuka, A.; Kawai, K.; Taki, T.; Sakao, R.; Ichikawa, Yasuaki.

Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014. Vol. 1 Taylor and Francis - Balkema, 2014. p. 659-665.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takayama, Y, Ikuta, Y, Iizuka, A, Kawai, K, Taki, T, Sakao, R & Ichikawa, Y 2014, Numerical evaluation of a multiple soil barrier system preventing water infiltration. in Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014. vol. 1, Taylor and Francis - Balkema, pp. 659-665, 6th International Conference on Unsaturated Soils, UNSAT 2014, Sydney, NSW, Australia, 7/2/14.
Takayama Y, Ikuta Y, Iizuka A, Kawai K, Taki T, Sakao R et al. Numerical evaluation of a multiple soil barrier system preventing water infiltration. In Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014. Vol. 1. Taylor and Francis - Balkema. 2014. p. 659-665
Takayama, Y. ; Ikuta, Y. ; Iizuka, A. ; Kawai, K. ; Taki, T. ; Sakao, R. ; Ichikawa, Yasuaki. / Numerical evaluation of a multiple soil barrier system preventing water infiltration. Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014. Vol. 1 Taylor and Francis - Balkema, 2014. pp. 659-665
@inproceedings{2a20e3d6c3b9429388270882ea74cc11,
title = "Numerical evaluation of a multiple soil barrier system preventing water infiltration",
abstract = "In this paper, a multiple unsaturated soil barrier system consisting of multiple layers of gravel, sand, decomposed granite soil, and bentonite mixture soil is considered as a hardly permeable covering to prevent rainwater from infiltrating into waste deposits. Water infiltration is prevented due to both the low permeability of the bentonite mixture soil layer and a capillary barrier with different water-retention capabilities. A series of numerical simulations was carried out to evaluate the performance of the barrier system using a saturated/unsaturated soil/water coupled FE computation technique. Impermeability of the barrier system is shown as a graphical chart with rainfall duration on the x-axis and rainfall intensity on the y-axis. The simulation results show that the capillary barrier is a key parameter in evaluating the long-term performance of the barrier system. Results also confirm that the barrier system can work well against the maximum intensity of the rainfall recorded in Nigyo-toge.",
author = "Y. Takayama and Y. Ikuta and A. Iizuka and K. Kawai and T. Taki and R. Sakao and Yasuaki Ichikawa",
year = "2014",
language = "English",
isbn = "9781138026896",
volume = "1",
pages = "659--665",
booktitle = "Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014",
publisher = "Taylor and Francis - Balkema",

}

TY - GEN

T1 - Numerical evaluation of a multiple soil barrier system preventing water infiltration

AU - Takayama, Y.

AU - Ikuta, Y.

AU - Iizuka, A.

AU - Kawai, K.

AU - Taki, T.

AU - Sakao, R.

AU - Ichikawa, Yasuaki

PY - 2014

Y1 - 2014

N2 - In this paper, a multiple unsaturated soil barrier system consisting of multiple layers of gravel, sand, decomposed granite soil, and bentonite mixture soil is considered as a hardly permeable covering to prevent rainwater from infiltrating into waste deposits. Water infiltration is prevented due to both the low permeability of the bentonite mixture soil layer and a capillary barrier with different water-retention capabilities. A series of numerical simulations was carried out to evaluate the performance of the barrier system using a saturated/unsaturated soil/water coupled FE computation technique. Impermeability of the barrier system is shown as a graphical chart with rainfall duration on the x-axis and rainfall intensity on the y-axis. The simulation results show that the capillary barrier is a key parameter in evaluating the long-term performance of the barrier system. Results also confirm that the barrier system can work well against the maximum intensity of the rainfall recorded in Nigyo-toge.

AB - In this paper, a multiple unsaturated soil barrier system consisting of multiple layers of gravel, sand, decomposed granite soil, and bentonite mixture soil is considered as a hardly permeable covering to prevent rainwater from infiltrating into waste deposits. Water infiltration is prevented due to both the low permeability of the bentonite mixture soil layer and a capillary barrier with different water-retention capabilities. A series of numerical simulations was carried out to evaluate the performance of the barrier system using a saturated/unsaturated soil/water coupled FE computation technique. Impermeability of the barrier system is shown as a graphical chart with rainfall duration on the x-axis and rainfall intensity on the y-axis. The simulation results show that the capillary barrier is a key parameter in evaluating the long-term performance of the barrier system. Results also confirm that the barrier system can work well against the maximum intensity of the rainfall recorded in Nigyo-toge.

UR - http://www.scopus.com/inward/record.url?scp=84901611643&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84901611643&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9781138026896

VL - 1

SP - 659

EP - 665

BT - Unsaturated Soils: Research and Applications - Proceedings of the 6th International Conference on Unsaturated Soils, UNSAT 2014

PB - Taylor and Francis - Balkema

ER -