New Method for Internal Pore-Water Pressure Measurements

2021 ◽  
Vol 45 (2) ◽  
pp. 20210008
Author(s):  
Yawu Liang ◽  
Nicholas Beier ◽  
D. C. Sego
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
New Method ◽  
Pressure Measurements ◽  
Internal Pore

Representativeness of measurements in the interpretation of earth dam behaviour

2006 ◽  
Vol 43 (1) ◽  
pp. 87-99 ◽  
Author(s):  
Luca Pagano ◽  
Stefania Sica ◽  
Augusto Desideri
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Earth Dam ◽  
Measured Quantity ◽  
Pressure Measurements ◽  
Earth Dams ◽  
Pressure Monitoring ◽  
Spatial Continuity ◽  
Numerical Examples

The representativeness of measurements monitored in earth dams is analysed to investigate how a given measured quantity can be used to interpret the dam's mechanical behaviour. Representativeness is evaluated on the basis of spatial continuity of the measured quantity and the sensitivity of that quantity to natural mechanical nonhomogeneity. The discussion is supported by results from case studies and numerical examples. The study is mainly focused on pore-water pressure measurements. Spatial continuity of pore-water pressure is analysed with consideration of both saturation and drainage conditions. The paper discusses how pore-water pressure representativeness can vary over the lifetime of the dam.Key words: earth dam, pore-water pressure, monitoring.

scholarly journals Integrating local pore water pressure monitoring in territorial early warning systems for weather-induced landslides

Landslides ◽  
2021 ◽  
Author(s):  
Gaetano Pecoraro ◽  
Michele Calvello
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Model Performance ◽  
Early Warning Systems ◽  
Model Parameters ◽  
Pressure Measurements ◽  
Warning Systems ◽  
Warning Model ◽  
Statistical Indicators

AbstractA methodology designed to integrate widespread meteorological monitoring and pore water pressure measurements is proposed. The procedure is tested in 30 hydrological basins highly susceptible to weather-induced landslides in Norway. The following data are used: a catalog of 125 weather-induced landslides in soils registered between January 2013 and June 2017, widespread meteorological monitoring data employed in a territorial warning model, and pore water pressure measurements retrieved from boreholes installed for a variety of geotechnical projects. The territorial warning model is initially applied to identify the warning events and the correspondent warning level in the test areas over the analysis period. Afterwards, a method for assessing the territorial warning events by analyzing the trends of the monitored pore water pressures is proposed. Finally, an augmented territorial warning model is calibrated and validated using statistical indicators widely adopted in literature. The analysis of the results reveals a satisfactory correspondence between days with landslides and the warning levels provided by the augmented territorial warning model. A final comparison between the results of the model calibration and the model validation highlighted the consistency of the model performance, once the three model parameters are adequately set.

scholarly journals Nonlinear Finite Strain Consolidation Analysis with Secondary Consolidation Behavior

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Jieqing Huang ◽  
Xinyu Xie ◽  
Jifa Zhang ◽  
Jinzhu Li ◽  
Wenjun Wang
Keyword(s):  
Pore Water ◽  
Governing Equation ◽  
Finite Strain ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Soft Clay ◽  
New Method ◽  
Calculation Results ◽  
Consolidation Analysis ◽  
Consolidation Behavior

This paper aims to analyze nonlinear finite strain consolidation with secondary consolidation behavior. On the basis of some assumptions about the secondary consolidation behavior, the continuity equation of pore water in Gibson’s consolidation theory is modified. Taking the nonlinear compressibility and nonlinear permeability of soils into consideration, the governing equation for finite strain consolidation analysis is derived. Based on the experimental data of Hangzhou soft clay samples, the new governing equation is solved with the finite element method. Afterwards, the calculation results of this new method and other two methods are compared. It can be found that Gibson’s method may underestimate the excess pore water pressure during primary consolidation. The new method which takes the secondary consolidation behavior, the nonlinear compressibility, and nonlinear permeability of soils into consideration can precisely estimate the settlement rate and the final settlement of Hangzhou soft clay sample.

scholarly journals Some Observations at le Coteau Landslide, Gatineau, Quebec

1972 ◽  
Vol 9 (4) ◽  
pp. 508-514 ◽  
Author(s):  
W. J. Eden
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Housing Development ◽  
Pressure Measurements ◽  
Landslide Activity

In April 1971, landslide activity developed in a 100-ft (30.5-m) high clay slope in a housing development. This note describes the landslide and discusses the pore-water pressure measurements made at the site.

scholarly journals Pore Water Pressure Measurements in the Interpretation of the Hydraulic Behaviour of Two Earth Dams

2010 ◽  
Vol 50 (2) ◽  
pp. 295-307 ◽  
Author(s):  
Luca Pagano ◽  
Enzo Fontanella ◽  
Stefania Sica ◽  
Augusto Desideri
Keyword(s):  
Pore Water ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Pressure Measurements ◽  
Earth Dams ◽  
Hydraulic Behaviour
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