Silikatlı bileşiklerin zemine enjeksiyonu için bir model

Enjeksiyon, çimento, asfalt ve kimyasal gibi maddelerin zemine enjekte edilmesiyle çatlak ve/veya boşlukları tıkayarak, enjeksiyon yapılan bölgeyi geçirimsiz kılma, mukavemetini arttırma işlemidir. Bu çalışmada zemin bünyesine yapılan kimyasal madde enjeksiyonu incelenmiştir. Silikatlı enjeksiyon maddesinin, suya doygun zemin içindeki yayılımının simülasyonunu yapan, iki boyutlu sayısal bir model geliştirilmiş, modelin uygulaması iki sayısal örnek ile anlatılmıştır.

A model for silicate injection into soil

Injection is the process of filling the fissures and pores to make the injection zone impermeable, increase its strength by injecting cement, asphalt and chemical gels. In this paper, silicate grout injection into soil is examined and two-dimensional numerical model that simulates the two-phase immiscible flow in a porous media is developed and the model is tested by two numerical simulations.

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1)Karol, R.H., "Chemical grouting technology", Journal of the Soil Mechanics and Foundation Division, ASCE, 94 (SMI), 175-204 (1968).
2)Bader, T.A., "Injection and distribution of silicate grout in sand", Ph.D. thesis, Northwestern University, Evanston, Illinois, USA (1981).
3)Krizek, R.J. and Perez, T., "Chemical grouting in soils permeated by water", Journal of Geotechnical Engineering, 111 (7), 898-915 (1985).
4)Kleyner, I., Krizek, R.J., "Mathematical model for bore-injected cement grout installations", Journal of Geotechnical Engineering, 121 (11), 782-788, (1995).
5)Elmalı, H., "Simulation of grouting in one dimension", M.Sc. thesis, Faculty of engineering, METU, Ankara, (1999).
6)Abriola, L.M. and Pinder, G.F., "A multiphase approach to the modeling of porous media contamination by organic compounds: 1. Equation developed", Water Resources Research, 21 (1), 11-18, (1985 a).
7)Abriola, L.M. and Pinder, G.F., "A multiphase approach to the modeling of porous media contamination by organic compounds:2. Numerical simulation", Water Resources Research, 21 (1), 19-26 (1985 b).
8(Faust, C.R., "Transport of immiscible fluids within and below the unsaturated zone: A numerical model", Water Resources Research, 21 (4), 587-596 (1985).
9)Osborne, M., and Sykes, J., "Numerical modeling of immiscible organic transport at the Hyde Park Landfill", Water Resources Research, 22 (1),1727-1736, (1986).
10)Kuppasamy, T., Sheng J., Parker, J.C., Lenhard R.J., "Finite-element analysis of multiphase immiscible flow through soils", Water Resources Research, 23(4), 625-631,(1987).
11)Lenhard, R.J., Parker, J.C., Kaluarachchi, J.J., "A model for hysteretic constitutive relations governing multiphase flow: 3. Refinements and numerical simulations", Water Resources Research, 25 (7), 1727-1736, (1989).
12)Kaluarachchi, J.J. and Parker, J.C., "An efficient finite element method for modeling multiphase flow", Water Resources Research, 25 (1), 43-54, (1989).
13)Faust, C.R., Guswa, J.H., Mercer, J.W., "Simulation of three-dimensional flow of immiscible fluids within and below the unsaturated zone", Water Resources Research, 25 (12), 2449-2464, (198-9).
14) Kueper, B.H. and Frind, E.O., "Two-phase flow in heterogeneous porous media: Model development", Water Resources Research, 27 (6), 1049-1057, (1991a).
15)Kueper, B.H. and Frind, E.O., "Two-phase flow in heterogeneous porous media: 2. Model application, Water Resources Research, 27 (6), 1059-1070, (1991b).
16)Yıldız, F. E., "Toprak Zeminde Kimyasal Enjeksiyon", Y.Lisans tezi, Fen Bilimleri Enstitüsü, Gazi Üniversitesi, Ankara, (2002)
17)Bear, J., "Dynamics of fluids in porous media", American Elsevier Publishing Co. Inc., s 119-123, 457-468, Newyork, USA, (1988).
18)Prickett, T.A., Lonnquist, C.G., "Selected digital computer techniques for groundwater resource evaluation", Bulletin 55 State Of Illinois Department Of Registration And Education, s 3-5, Urbana, USA, (1971).
19)Chapra, S.C., Canale, R.P., "Numerical methods for engineers, Me Graw Hill International Editions, s 844-846, 288-289, USA, (1998).
20)Hoffmann, K.A., "Computational fluid dynamics for engineers", Publication of Engineering Education System, s 108-125, Austin, Texas, USA, (1989).