Searched for: subject:"seepage"
(1 - 19 of 19)
document
Liu, K. (author), Vardon, P.J. (author), Hicks, M.A. (author)
Internal erosion, or piping, has been attributed as a major cause of dam and embankment failures. Most prediction models for predicting piping use the hydraulic gradient between the upstream and downstream water levels as an indicator. No explicit consideration is made regarding preferential pathways, although piping usually initiates from a...
journal article 2019
document
Li, Z. (author), Ye, Wei (author), Marence, Miroslav (author), Bricker, J.D. (author)
Climate change with extreme hydrological conditions, such as drought and flood, bring new challenges to seepage behavior and the stability of earthfill dams. Taking a drought-stricken earthfill dam of China as an example, the influence of drought-flood cycles on dam seepage behavior is analyzed. This paper includes a clay sample laboratory...
journal article 2018
document
Liu, K. (author)
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doctoral thesis 2017
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Correia dos Santos, R. (author), Caldeira, L. (author), Maranha das Neves, E, (author)
A laboratory study aiming at the evaluation of the suffusion behaviour of coarse gap-graded soils is presented. Six granular gap-graded soils missing the medium-to-coarse sand fraction have been examined. Four soils have no fines, one has 5% of non-plastic fines, and one has 5% of clayey fines (with plasticity index of about 14%). The use of...
conference paper 2017
document
Robbins, B.A. (author), van Beek, V.M. (author)
A novel laboratory device is presented, in which the process of backward erosion piping is observed in cylindrical sand samples oriented horizontally. The cylindrical shape of the testing device constrained the location of the erosion path to the top of the sample, thereby allowing pore pressure measurements to be made in both the eroded pipe...
conference paper 2017
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Marot, D. (author), Bendahmane, F. (author), Andrianatrehina, R. (author), Gelet, R. (author)
Suffusion, one of the main internal erosion processes, selectively erodes the fine particles which move through the voids formed by the coarser particles. In the literature, the mechanical consequences of suffusion on soil were investigated by several researchers. However, no general conclusion can be drawn because the already published results...
conference paper 2017
document
Hilgersom, K.P. (author)
This thesis explores a new measuring approach to quantify the seepage flux from boils. Boils are preferential groundwater seeps and are a consequence of the groundwater flow that works its way through the soil matrix by creating vents of higher conductive material. In the Netherlands, boils often occur in deep polders (reclaimed lakes situated 4...
doctoral thesis 2017
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Liu, K. (author), Vardon, P.J. (author), Hicks, M.A. (author), Arnold, P. (author)
The stability of most earth embankments is strongly influenced by the water content of the soil. The water content directly influences the suction or pore pressure in the soil, as well as the mass of material, thereby affecting the stress state and strength, and leading to changes in the stability. These aspects are coupled by the so-called soil...
journal article 2017
document
Hilgersom, K.P. (author), van de Giesen, N.C. (author), de Louw, PGB (author), Zijlema, M. (author)
Distributed temperature sensing has proven a useful technique for geoscientists to obtain spatially distributed temperature data. When studies require high-resolution temperature data in three spatial dimensions, current practices to enhance the spatial resolution do not suffice. For example, double-diffusive phenomena induce sharp and small...
journal article 2016
document
Van Beek, V.M. (author)
Backward erosion piping is an internal erosion mechanism during which shallow pipes are formed in the direction opposite to the flow underneath water-retaining structures as a result of the gradual removal of sandy material by the action of water. It is an important failure mechanism in both dikes and dams where sandy layers are covered by a...
doctoral thesis 2015
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Otake, Y. (author), Honjo, Y. (author), Hiramatsu, Y. (author), Lee, K. (author), Kodaka, T. (author)
A design scheme is proposed to evaluate the safety of continuous linear structure i.e. river levee. The scheme is developed to establish a procedure to continuously evaluate the stability failure of embankment during flood runoff by seepage, and to identify locations for reinforcement of river levee. A 20km stretch of a fairly large river...
conference paper 2015
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Honjo, Y. (author), Moro, H. (author), Ishihara, M. (author), Otake, Y. (author)
The ministry of land, infrastructures, transportation and tourism (MLIT) of the Japanese government maintains governmental managed river levee for the safety against flood whose total length is more than 10,000 km. The design standard of river levee had been traditionally done based on so called shape based specification, where levee is judged...
conference paper 2015
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Robbins, B.A. (author), Sharp, M.K. (author), Corcoran, M.K. (author)
The U.S. Army Engineer Research and Development Center (ERDC) is conducting research to investigate internal erosion, specifically backward erosion piping, by use of laboratory-scale model testing to understand and properly capture the physics of the problem. Preliminary results show that lower void ratio models, using poorly-graded soils with a...
conference paper 2015
document
Liu, K. (author), Hicks, M.A. (author), Vardon, P.J. (author), Jommi, C. (author)
Piping has been attributed as a major cause of dam and embankment failures. Current national prediction models to predict piping use the hydraulic gradient between the upstream and downstream water levels as an indicator. They are deterministic and take no account of preferential pathways. However, piping usually initiates from a discrete...
conference paper 2015
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De Visser, M.M. (author), Kanning, W. (author), Koopmans, R. (author), Niemeijer, J. (author)
Research to the failure mechanism piping (internal, backward erosion) in the Netherlands shows that the dikes require costly berms to meet the required safety standards. According to the Sellmeijer piping-formula, the d70 (70%-quantile of the grain size distribution by weight) is an important parameter in the resistance against piping. Therefore...
conference paper 2015
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Lopez De La Cruz, J. (author), Calle, E.O.F. (author), Schweckendiek, T. (author)
New insights into the failure mechanism piping (under-seepage) regarding the physical process as well as reliability aspects have led to a revision of the Dutch design and safety assessment rules for dikes. This paper describes how the required factor of safety for piping is derived from a top level requirements formulated in terms of an...
conference paper 2011
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Anonymous, A. (author)
1. INTRODUCTION 1. 1 Project background 1.2 Outline of official arrangements 1.3 Project objectives 2. REsULTS AND CONCLUSIONS 2. 1 Dike design 2. 1.1 Dike-closure methods 2.1.2 Availability of data related to dike design 2.1.3 Current dike design 2. 1.4 Inner dikes 2.1.5 Alternative reclamation possibilities 2.2 Polder development 2.2.1...
report 1994
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Glerum, A. (author)
The Netherlands are situated in the delta. of the rivers Rhine, Meuse and Scheldt. Therefore the ground mainly consists.of sediments, such as sand, clay and silt. In certain regions peat layers of varying thickness are found. The high permeability of some of these materials and the fact that the groundwater table is generally only 1 m below...
report 1982
document
Konter, J.L.M. (author)
report 1977
Searched for: subject:"seepage"
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