Multiple approaches to analyse and control seepage in hydraulic structures

Kamble, R. K.; Muralidhar, B.; Hanumanthappa, M. S.; Patil, A. V.; Edlabadkar, J. S.

doi:10.1080/09715010.2013.821787

Cited by 9 publications

(4 citation statements)

References 1 publication

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“…Materials 2023, 16,4368 2 of 15 established the permeability coefficient as a function of porosity by groundwater experiments and applied it to geotechnical and concrete materials; Louis [21] established the relationship between the anisotropic permeability coefficient and stress using experimental data from borehole pumping experiments at a dam site. However, they did not consider the change in the permeability coefficient when the concrete was in a damaged condition.…”

Section: Sample Preparation and Experimental Schemementioning

confidence: 99%

“…Nevertheless, in the present safety analysis of hydraulic structures, concrete is usually viewed as an impermeable material [ 14 , 15 , 16 ], or as a material with a constant permeability coefficient [ 17 , 18 , 19 ], even though in the seepage–stress coupling analysis, the permeability coefficient varies mainly within the range of the material’s elastic state. Rivera [ 20 ] established the permeability coefficient as a function of porosity by groundwater experiments and applied it to geotechnical and concrete materials; Louis [ 21 ] established the relationship between the anisotropic permeability coefficient and stress using experimental data from borehole pumping experiments at a dam site.…”

Section: Introductionmentioning

confidence: 99%

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Permeability Coefficient of Concrete under Complex Stress States

Ren

Mei

et al. 2023

Materials

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Hydraulic structures are typically subjected to long-term hydraulic loading, and concrete—the main material of structures—may suffer from cracking damage and seepage failure, which can threaten the safety of hydraulic structures. In order to assess the safety of hydraulic concrete structures and realize the accurate analysis of the whole failure process of hydraulic concrete structures under the coupling effect of seepage and stress, it is vital to comprehend the variation law of concrete permeability coefficients under complex stress states. In this paper, several concrete samples were prepared, designed for loading conditions of confining pressures and seepage pressures in the first stage, and axial pressures in the later stage, to carry out the permeability experiment of concrete materials under multi-axial loading, followed by the relationships between the permeability coefficients and axial strain, and the confining and seepage pressures were revealed accordingly. In addition, during the application of axial pressure, the whole process of seepage–stress coupling was divided into four stages, describing the permeability variation law of each stage and analyzing the causes of its formation. The exponential relationship between the permeability coefficient and volume strain was established, which can serve as a scientific basis for the determination of permeability coefficients in the analysis of the whole failure process of concrete seepage–stress coupling. Finally, this relationship formula was applied to numerical simulation to verify the applicability of the above experimental results in the numerical simulation analysis of concrete seepage–stress coupling.

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Section: Sample Preparation and Experimental Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Permeability Coefficient of Concrete under Complex Stress States

Ren

Mei

et al. 2023

Materials

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“…Significant progress has been made in the anti-seepage technology of hydraulic structure surfaces with the advancement of construction and reinforcement technologies. The surfaces of hydraulic structures, such as power stations [1], concrete structures [2][3][4] and water conveyance structures [5], are relatively weakly zoned during operation periods, resulting in various secondary disasters caused by hydraulic fracturing and high-pressure reservoir water entering cracks, endangering the safety of hydraulic structures [6][7][8][9]. Therefore, it is extremely necessary to strengthen the anti-seepage treatment and protection.…”

Section: Introductionmentioning

confidence: 99%

Study on the Performance of Polyurea Anti-Seepage Spray Coating for Hydraulic Structures

Yin

2023

Sustainability

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The surfaces of hydraulic structures are vulnerable to damage and cracking, which can result in high-pressure reservoir water entering cracks and endangering the safety of the structures. Therefore, it is necessary to strengthen the anti-seepage treatment and protection on the surfaces of the structures. In this paper, we explore the tensile and high-water-pressure breakdown resistance properties of polyurea coating material. To do so, we independently designed and manufactured a high-water-pressure breakdown test device for coating. Our experimental results indicated that the thickness of the polyurea coating decreased with an increase in elongation. Furthermore, we found that the breakdown resistance of the polyurea coating was related to the coating thickness and the bottom free section width. We then fitted the stress–strain curve obtained from the experimental test using the Ogden constitutive model. Based on this, we numerically simulated the high-water-pressure breakdown performance of the polyurea coating using the finite element software ABAQUS 2022. We obtained the relationships among maximum displacement, free section width, and coating thickness under high water pressure. Our numerical findings indicated that the vertical displacement of the midpoint increased linearly with width in the case of the same coating thickness under water pressure load. Conversely, for the same free section width, the vertical displacement decreased with increasing coating thickness.

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“…Ahmed (2011) studied different sheet piles configurations and flow through canal banks. Kamble et al (2014) described the potential of different approaches such as geological and geotechnical methods, dam instrumentation, geophysical methods, tracer techniques, nuclear logging and mathematical modeling for monitoring, detecting and analyzing seepage in hydraulic structures.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Actual Creep Length Under Heading up Structures Aprons

2018

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In this paper a 2D finite element model (SEEP2D) is implemented to study the actual head loss along the sheet piles fixed at the ends of an apron of a heading up structure. Different scenarios for the thickness of the pervious layer under the apron, the length of the apron and the depths of the upstream and downstream sheet piles are studied. Results show that assuming the outer and inner faces of the sheet piles have the same weight for estimating the creep length while designing aprons of hydraulic structures is weak. Design equations for the actual head loss along the outer and inner faces for both the upstream and downstream sheet piles are driven. These equations can be used as a tool in the practical design for aprons of heading up structures formed on pervious soil and provided with upstream and downstream sheet piles at its ends.

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Multiple approaches to analyse and control seepage in hydraulic structures

Cited by 9 publications

References 1 publication

Permeability Coefficient of Concrete under Complex Stress States

Permeability Coefficient of Concrete under Complex Stress States

Study on the Performance of Polyurea Anti-Seepage Spray Coating for Hydraulic Structures

Evaluation of Actual Creep Length Under Heading up Structures Aprons

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