Development of ACV for management of river embankment

Constructing a scientific, reasonable, all-encompassing, and representative-strong index system is an important premise and guarantee for the good embankment-safety-evaluation of Yellow River. Therefore, the embankment safety-influencing-factor identification has been raised based on consequence-reverse-diffusion method, which can be used to seek the main factors leading to accidents by reverse-thinking and reverse-diffusion way. The main factors which lead to the embankment accident shall be found out according to the accident form, then spreading to the specific influence-factor. As a result, the author has made a classification and extraction for the identified safety-influence-factors, and constructed the optional index-set and index-system for the Yellow River embankment-safety-evaluation after analyzing the content of the safety-influence-factors, which has laid a solid foundation for further embankment safety assessment for the Yellow River embankment construction.

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Multidisciplinary Analysis and Modelling of a River Embankment Affected by Piping

Lecture Notes in Civil Engineering - Internal Erosion in Earthdams, Dikes and Levees ◽

10.1007/978-3-319-99423-9_22 ◽

2018 ◽

pp. 234-244 ◽

Cited By ~ 1

Author(s):

Giulia Bossi ◽

Silvia Bersan ◽

Simonetta Cola ◽

Luca Schenato ◽

Fabio De Polo ◽

...

Keyword(s):

Multidisciplinary Analysis ◽

River Embankment

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A Hydro-Mechanical Coupled Analysis of an Unsaturated River Embankment due to Seepage Flow

Engineering Plasticity and Its Applications - Key Engineering Materials ◽

10.4028/0-87849-433-2.1223 ◽

2007 ◽

pp. 1223-1230

Author(s):

Fusao Oka ◽

T. Kodaka ◽

Sayuri Kimoto ◽

R. Kato ◽

S. Sunami

Keyword(s):

Seepage Flow ◽

Coupled Analysis ◽

River Embankment

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Hydro-mechanical behaviour of a sandy silt from a river embankment

E3S Web of Conferences ◽

10.1051/e3sconf/202019501033 ◽

2020 ◽

Vol 195 ◽

pp. 01033

Author(s):

Vincenzo Butticè ◽

Alessio Ferrari ◽

Carmine G. Gragnano ◽

Guido Gottardi

Keyword(s):

Mechanical Behaviour ◽

Measurement Techniques ◽

Degree Of Saturation ◽

Confining Stress ◽

River Level ◽

Suction Control ◽

Sandy Silt ◽

Axial Translation ◽

Safety Margins ◽

River Embankment

The paper presents the results of an experimental campaign aimed at characterizing the hydro-mechanical behaviour of a sandy silt from a river embankment. Due to continuous river level fluctuations and changing climatic and environmental conditions, flood embankment materials experience frequent variations in degree of saturation and suction values. Such variations strongly impact the earthwork performance both in terms of seepage and stability conditions. For these reasons, a detailed characterization of the material behaviour in unsaturated conditions was carried out. Experiments were designed in order to highlight the response of the involved soil in terms of changes in matric suction and confining stress. All tests were performed on undisturbed samples from the embankment. To cover the suction range, which is expected to be significant for the material and assessed through field monitoring, a combination of several suction-control and suction-measurement techniques was used (e.g. negative water column, axial translation, tensiometers). Obtained results enabled (i) to quantify the evolution of the yield stress with suction, (ii) to assess the collapse upon wetting behaviour, (iii) to get detailed information on the water retention behaviour and (iv) to define the relative permeability of the soil. This extensive characterization work serves as a basis for the analysis of the embankment response following river level variations, the final purpose of the research being to establish a reliable methodology and a feasible procedure for the realistic assessment of the safety margins under transient seepage.

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