scholarly journals FDM analysis of earth dams – end of construction and water seepage (case study: Ivshan Iran dam)

2021 ◽  
Vol 1973 (1) ◽  
pp. 012201
Author(s):  
F A Ramsheh ◽  
A Rashiddel ◽  
D Dias
Keyword(s):  
Earth Dams ◽  
Water Seepage

Assessing the earth dams’ effect on the groundwater of its location case study: Kord-Oliya dam

2020 ◽  
Vol 13 (22) ◽  
Author(s):  
Mandana Bayat ◽  
Saeid Eslamian ◽  
Gholamreza Shams ◽  
Alborz Hajiannia
Keyword(s):  
Earth Dams ◽  
The Earth

Seepage Monitoring of an Embankment Dam Using Resistivity Method: A Case Study of LUSI Mud Volcano P.79 - P.82 Embankment

2015 ◽  
Vol 771 ◽  
pp. 213-217 ◽  
Author(s):  
Alwi Husein ◽  
Bagus Jaya Santosa ◽  
Ayi Syaeful Bahri
Keyword(s):  
Water Level ◽  
Resistivity Measurement ◽  
Mud Volcano ◽  
Dc Resistivity ◽  
Embankment Dam ◽  
Water Seepage ◽  
Resistivity Method ◽  
Embankment Height ◽  
Non Destructive

Since the Lusi Mud volcano erupts in Sidoarjo, East Java, on May 2006, soil embankments have been built to keep hot mud within the ponds. Unfortunately, since the embankments were sitting on a poorly weak ground, land subsidence intensively occurred around the embankments. These subsidences are mainly caused by water seepage penetrating the embankment. To observe the part of the embankment that is vulnerable to water seepage, DC Resistivity method, being a non-destructive and versatile method, is used to monitor the subsurface condition of the embankment. P.79 - P.82 embankment, which has collapsed on December 2010 is highlighted in this study because it has the lowest height of all part the embankment, directly adjacent with water from the mud volcano in the inside and field crop on the outside. The research will show the fluctuating results of the water seepage in the embankment during the timeline of February 2012 - October 2013 which, unlike the result of another area, is highly affected by the water level at each measurement. The embankment height during each DC Resistivity measurement is also measured to compare the subsurface result with the condition on the surface. The resistivity subsurface cross section shows increasing water seepage in each measurement (February 2012, July 2012 and October 2013). Alarming seepage level displayed in December 2012 which is presumably triggered by the increase of water level during rainy season is also followed by cracks occurred in the surface.

Uncertainty Analysis and Monitoring of Earth Dam

2014 ◽  
Vol 580-583 ◽  
pp. 954-957
Author(s):  
Ling Qiang Yang ◽  
Rui Gao ◽  
Yan Wang
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Probabilistic Method ◽  
Finite Difference Methods ◽  
Earth Dam ◽  
Earth Dams ◽  
Program Code ◽  
Physical Behavior ◽  
Difference Methods

Monte Carlo simulation provides a probabilistic method to evaluate the physical behavior of earth dam. Therefore, the behavior could be got in a more realistic manner. Based on the theory, an innovative software program code is developed by combining the Monte Carlo and finite difference methods to predict the performance of earth dams after impounding. In order to assess the efficiency of the method, the case study of earth dam, located at Southeast of China, has been studied in detail. The performance of this dam is predicted and compared with the field monitoring by using the monitoring data. The results shows the robustness of the proposed method.

scholarly journals Instrumentation issues and problems in earth dams (Case Study; Shah Qasim Dam in Yasouj, Iran)

2020 ◽  
Vol 33 (02) ◽  
pp. 737-745
Author(s):  
Amir Behshad
Keyword(s):  
Water Level ◽  
Water Levels ◽  
Critical Conditions ◽  
Earth Dams ◽  
Water Level Changes ◽  
East Of Iran ◽  
Accurate Comparison ◽  
Safety And Stability ◽  
Over Time

Installation and monitoring of instrumentation is one of the practical methods for controlling safety and stability of earth dams. Piezometers existing in dam body and dam abutments are one of the various types of precision instruments used in dams, which indicate the height of water level in different parts of the dam. In order to evaluate the performance of piezometers of Shah Qasim Dam in Kohgiluyeh and Boyerahmad province (in south east of Iran), we compare water level changes in piezometer and water level changes in the dam lake over time. In this paper, the above mentioned dam is modelled using the SEEP/W software, then after imposing boundary conditions, water levels are computed at various points. For more accurate comparison, water level changes are plotted in transverse and longitudinal piezometers over time. The results of analysis indicate significant increase of permeability in vicinity of some piezometers. The piezometers BX4, BX14, BX13 and SP6, and the region near them, as well as piezometers SP24 and SP18 and their surrounding area, have critical conditions which should be inspected as soon as possible.

scholarly journals Detection of Outlier Observations in Piezometric Measurements: A Case Study in the Southern Region of Poland

2021 ◽  
Vol 16 (1) ◽  
pp. 95-116
Author(s):  
Stanisław Lach
Keyword(s):  
Statistical Tests ◽  
Water Pressure ◽  
Water Levels ◽  
Southern Region ◽  
Earth Dams ◽  
Significance Level ◽  
Suitable Test ◽  
Grubbs Test

One of the main modes of monitoring the geotechnical conditions of earth dams is piezometric measurement, which measures water levels in an open piezometer or water pressure in a closed piezometer. During piezometric measurements, various types of factors can cause disturbances in these measurements that take the form of systematic, accidental, or obvious mistakes. Before measurements from open or closed piezometers are analyzed, outliers due to coarse errors should be detected and rejected. Such observations may significantly influence the result of the analysis and cause erroneous assessment and interpretation of the phenomenon studied. To do this, statistical tests must be applied so that the doubtful measurement can be accepted or rejected at the assumed significance level. This paper uses five statistical tests for identifying and rejecting outliers: the Q-Dixon test, the Grubbs test, as well as the Hampel test, the Iglewicz and Hoaglin test, and the Rosner test. The aim of this article is to try to identify the most suitable test for periodic piezometric measurements. The scope of the study includes the analysis of piezometric measurements for the Czaniec Dam for the multi-year period 2017–2020.

A case study on the seismic performance of earth dams

Géotechnique ◽  
2015 ◽  
Vol 65 (11) ◽  
pp. 923-935 ◽  
Author(s):  
L. Pelecanos ◽  
S. Kontoe ◽  
L. Zdravković
Keyword(s):  
Seismic Performance ◽  
Earth Dams
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