Efficiency assessment of vertical barriers on the basis of flow and transport numerical modeling

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The construction of cut-off walls is a common solution applied in such disciplines as land reclamation and landfill containment. Most commonly the construction of vertical barriers is based on cut-off wall mono or diphase technology with the use of bentonite-cement mixture as a filling material. The content of the paper is focused on groundwater flow and transport numerical modeling conducted on landfill areas where vertical bentonite barriers were constructed. The modeling process was conducted with the use of FEMWATER software which employs analysis based on finite element method. There are two examples of the software application presented in the paper which concern such case studies, i.e., reclamation of Radiowo and Łubna landfill sites. These examples are provided to prove that the appropriate investigation of ground conditions as well as definition of initial and boundary conditions and correct selection of material parameters to be fed into the software, are crucial for the overall modeling process. Moreover, the comparison of results obtained from the numerical modeling and the groundwater monitoring on site is presented for one of the case studies.

[1] BRANDL H., Vertical barriers for municipal and hazardous waste containment, Proceedings Symposium on Developments in geotechnical Engineering, Bangkok, 1994, 301-334.

[2] KODA E., STĘPIEŃ M., Application of Vertical Bentonite Barriers Surrounding Sanitary Landfills, 4th International Waste Forum „Systems of Waste Management”, Poznań-Piła, 2001, 1-12.

[3] VERRUIJT A., KODA E., Analysis of Pollution Control by Finite Elements, Water Science and Technology Library (Vol. 12), Computational Methods in Water Resources X, Kluwer Academic Publisher, Dordrecht, 1994, Vol. 2, 1489-1495.

[4] BEAR J., VERRUIJT A., Modeling Groundwater Flow and Pollution, Reidel, Dordrecht, 1987.

[5] EMRL, Groundwater modeling system tutorial volume I-IV, Brigham Young University, UT, 2003.

[6] LIN H.C., RICHARDS D.R., YEH G.T., CHENG J.R., CHENG H.P., JONEM N.L., FEMWATER: a threedimensionalfinite element computer model for simulating density-dependent flow and transport invariably saturated media, Technical Report CHL-97-12, U.S. Army Corps of Engineer, 1997.

[7] JESSBERGER H.L. ed., Geotechnics of Landfill Design and Remedial Works - Technical RecommendationGLR, Ernst & Sohn, Berlin, 1993.

[8] KODA E. Groundwater Protection System for Old Landfill Leachate Containment, Proceedings of the 12th Danube-European Conference on Geotechnical Engineering, Passau, 567-570.

[9] BATOG A., HAWRYSZ M., Geotechnical problems of raising the capacity of exploited landfill sites, Studia Geotechnica et Mechanica, 2005, Vol. XXVII, No. 1-2, 13-20.

[10] FRATALOCCHI E., PASQUALINI E., Permeability over time of cement-bentonite slurry walls, Proceedings of the 3rd International Congress on Environmental Geotechnics, Lisboa, 1998, Vol. 2, 509-514.

[11] LIPINSKI M.J., KODA E., WDOWSKA M.K., Assessment of key geotechnical characteristics ofa groundwater protective vertical barrier, Proceedings of the 14th European Conference on Soil Mechanics and Geotechnical Engineering, Madrid, 2007, Vol. 2, 767-772.

[12] KODA E., SKUTNIK Z., Quality control tests of vertical bentonite barriers for old sanitary landfillcontainment, Proceedings of the 13th European Conference on Soil Mechanics and Geotechnical Engineering, Praha, 2003, Vol. 1, 409-414.

[13] SOGA K., JOSHI K., Long-term Performance of cement-bentonite cut-off walls: A case study, Proceedings of the 6th International Congress on Environmental Geotechnics, New Delhi, 2010, Vol. 1, 151-164.

[14] Van GENUCHTEN M.T., A closed-form equation for predicting the hydraulic conductivity of unsaturatedsoil, Soil Science Society Journal, 1980, 44, 892-898.

[15] CARSEL R.F., PARRISH R.S., Developing joint probability distribution of soilwater retention characteristics, Water Resources Research, 1988, Vol. 24, No. 5, 755-760.

[16] ROWE R.K., QUIGLEY R.M., BROKER J.R., Clayey Barrier Systems for Waste Disposal Facilities, Chapman & Hall, London, 1995.

[17] SHACKELFORD C.D., ROWE R.K., Contaminant Transport Modeling, Proceedings of the 3rd International Congress on Environmental Geotechnics, Lisboa, 1998, Vol. 3, 939-956.

[18] KODA E., ŻAKOWICZ S., Physical and hydraulics properties of the MSW for water balance of thelandfill, Proceedings of the 3rd International Congress on Environmental Geotechnics, Lisboa, 1998, Vol. 1, 217-222.

[19] KODA E., Local water monitoring on surroundings of sanitary landfill, Annals of Warsaw Agricultural University - SGGW, Land Reclamation, 2004, No. 35a, 131-144.

[20] KODA E., Assessment of efficiency of the old landfill protection system based on transport modeling andmonitoring research, Proceedings of the 6th International Congress on Environmental Geotechnics, New Delhi, 2010, Vol. II, 1623-1630.

[21] KODA E., Stability and pollutant transport from remediated landfills with the use of ObservationalMethod, SGGW, Warsaw, 2011 (in Polish).

Studia Geotechnica et Mechanica

The Journal of Wrocław University of Science and Technology and AGH University of Science and Technology

Journal Information

CiteScore 2018: 1.03

SCImago Journal Rank (SJR) 2018: 0.213
Source Normalized Impact per Paper (SNIP) 2018: 1.106


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