A 2d/3d method of the groundwater flow and stability analysis of a slope with dewatering wells
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RIS BIB ENDNOTEA 2d/3d method of the groundwater flow and stability analysis of a slope with dewatering wells
Publication date: 20.12.2018
Technical Transactions, 2018, Volume 12 Year 2018 (115), pp. 95 - 106
https://doi.org/10.4467/2353737XCT.18.186.9674Authors
A 2d/3d method of the groundwater flow and stability analysis of a slope with dewatering wells
This paper presents an approximate method for a groundwater flow analysis in the case of a slope with vertical dewatering wells distributed equidistantly. Firstly, a multi-scale problem of flow to a drainage well is solved and flow model to a perforated tube with a filter screen is shown. Secondly, a method of building quasi-3D flow model of a slope with vertical dewatering wells using a technique of overlapped 2D mesh is shown. A short description of the implementation of this 2D/3D flow model for the ZSoil.PC code is given. The results of the described 2D/3D method are compared with a referential 3D analysis giving an acceptable level of agreement. Finally, the 2D/3D method of flow analysis is used in a two-phase (flow + deformation) formulation of a slope stability problem. The comparison of the results of these analyses with fully 3D (referential) analysis, on an example problem provides a very close accurate stability and deformation estimation; however, the computational time used for the 2D/3D analysis is significantly shorter than required by 3D analysis.
[1] Ozbay, A., Cabalar, A. F., FEM and LEM stability analyses of the fatal landslides at Çöllolar open-cast lignite mine in Elbistan, Turkey. “Landslides”, 12/2015, 155–163.
[2] Truty A., Urbański A., Grodecki M., Podleś K., Computer aided models of landslides and their protection problems, “Scientific-Technical Papers of Communication Engineers and Technicians of the Republic of Poland” in Krakow, No. 88, issue 88 (144)/2009, 395–419.
[3] Van Genuchten M.Th., A closed form equation for predicting the hydraulic conductivity of unsaturated soils. “Soil Science Society of America Journal”, 44/1980, 892–898.
[4] Urbański A., Grodecki M., Kot A., Numerical simulations in analysis of anti-flood ambankments,”Journal of Civil Engineering, Environment and Architecture”, 2016.
[5] Urbański A, Grodecki M., FE Approach to coupled transient flow and stability analysis of anti-flood ambankments “3-rd Int. Conference on Advances of Computer Methods in Geotechnical and Geo-environmental Engineering”, Moscow 2000.
[6] Wilk B. K., Urbański A., The impact of the shape of screen openings on groundwater flow to a deep drilled well, “Technical Transactions” 11/2018, to appear.
[7] Zheng, Y., Tang, X., Zhao, S., Deng, C., Lei, W.3., Strength reduction and step-loading finite element approaches in geotechnical engineering. “Journal of Rock Mechanics and Geotechnical Engineering”, 1(1)/2009, 21–30.
[8] Zimmemann Th., Truty A., Urbański A., Podleś K., Z_Soil.PC 2003 manual. Theory.Elmepress international & Zace Services ltd., Lausanne, Switzerland2005.
Information: Technical Transactions, 2018, Volume 12 Year 2018 (115), pp. 95 - 106
Article type: Original article
Titles:
A 2d/3d method of the groundwater flow and stability analysis of a slope with dewatering wells
A 2d/3d method of the groundwater flow and stability analysis of a slope with dewatering wells
Institute of Geotechnics, Faculty of Environmental Engineering, Cracow University of Technology
Institute of Geotechnics, Cracow University of Technology
Published at: 20.12.2018
Article status: Open
Licence: None
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