A Study on Liquefaction Susceptibility of Earthen Dams

2021 ◽  
pp. 19-28
Author(s):  
H. C. Sumanth ◽  
L. Govindaraju
Keyword(s):  
Liquefaction Susceptibility ◽  
Earthen Dams

scholarly journals Effect of Silica Fume as a Waste Material for Sustainable Environment on the Stabilization and Dynamic Behavior of Dispersive Soil

2021 ◽  
Vol 13 (8) ◽  
pp. 4321
Author(s):  
Murat Türköz ◽  
Seyfettin Umut Umu ◽  
Ogan Öztürk
Keyword(s):  
Silica Fume ◽  
Dynamic Properties ◽  
Soil Improvement ◽  
Waste Material ◽  
Resonant Column ◽  
Engineering Applications ◽  
Positive Effects ◽  
Sustainable Environment ◽  
Earthen Dams ◽  
Dispersive Soils

The use of dispersive soils, which are common in many parts of the world, in engineering applications such as water structures, earthen dams and road embankments is possible with their improvement. Recently, the effects of different chemicals on the stabilization of dispersive soils have been investigated. The use of waste materials in stabilization is preferred both because of the more sustainable environment and the economic advantages it provides. The use of silica fume (SF) as a waste material in different engineering applications provides an important advantage in environmentally and economically sustainable ways. Many studies have been carried out regarding silica fume, especially in the construction industry. Although SF is used in many industries, there is no study about its potential impact on the stabilization and dynamic properties of dispersive soils. In this study, first, Atterberg limits and standard Proctor compaction tests were performed on the mixtures prepared by adding different SF percentages (0, 5, 10, 15, 20, 25 and 30%). Afterward, pinhole tests and resonant column tests were performed to determine dispersibility and dynamic properties on the samples prepared by compaction characteristics for each SF percentage reached. In general, it was determined that SF contributed to a change in soil class, and improvement in dispersibility and dynamic properties of the soil sample, depending on SF content; positive effects of SF were observed in terms of shallow soil improvement.

Liquefaction susceptibility maps for the Aqaba–Elat region with projections of future hazards with sea-level rise

2020 ◽  
pp. qjegh2020-039 ◽  
Author(s):  
Abdel-Rahman A. Abueladas ◽  
Tina M. Niemi ◽  
Abdallah Al-Zoubi ◽  
Gideon Tibor ◽  
Mor Kanari ◽  
...  
Keyword(s):  
Sea Level ◽  
Water Table ◽  
Active Faults ◽  
Gulf Of Aqaba ◽  
Susceptibility Map ◽  
Northern Coast ◽  
Borehole Data ◽  
Ground Acceleration ◽  
Liquefaction Susceptibility ◽  
Susceptibility Maps

The cities of Aqaba, Jordan and Elat, Israel are vulnerable to seismic damage because they are built over the active faults of the Dead Sea Transform that are the source of historically destructive earthquakes. A liquefaction susceptibility map was generated for the Aqaba–Elat region. Borehole data from 149 locations and the water table depth were used to calculate effective overburden stress in the Seed–Idriss simplified method. The liquefaction analysis was based on applying a cyclic loading scenario with horizontal peak ground acceleration of 0.3 g in a major earthquake. The liquefaction map, compiled using a GIS platform, shows high and moderate liquefaction susceptibility zones along the northern coast of the Gulf of Aqaba that extend 800 m inland from the shoreline. In Aqaba, several hotels, luxury apartment complexes, archaeological sites, ports and commercial districts are located within high and moderate liquefaction zones. In Elat, the seaport and the coastal hotel district are located within a high susceptibility zone. Most residential areas, schools and hospitals in both cities are located within zones not susceptible to liquefaction based on the methods of this study. The total area with the potential to be liquefied along the Gulf of Aqaba is c. 10 km2. Given predictions for global sea-level, we ran three liquefaction models utilizing projected water table rises of 0.5, 1 and 2 m. These models yielded an increase in the area of high liquefaction ranging from 26 to 49%. Given the high potential of future earthquakes, our liquefaction susceptibility maps should help inform city officials for hazard mitigation planning.

Evaluation of ground motion characteristics, effects of local geology and liquefaction susceptibility: the case of Itea, Corinth Gulf (Greece)

2007 ◽  
Vol 40 (3) ◽  
pp. 537-552 ◽  
Author(s):  
Tatyana Novikova ◽  
Gerassimos A. Papadopoulos ◽  
Vassilios Karastathis
Keyword(s):  
Ground Motion ◽  
Corinth Gulf ◽  
Liquefaction Susceptibility ◽  
Local Geology ◽  
Motion Characteristics

Modelling of Seismic Liquefaction Using Classification Techniques

2021 ◽  
Vol 12 (1) ◽  
pp. 12-21
Author(s):  
Azad Kumar Mehta ◽  
Deepak Kumar ◽  
Pijush Samui
Keyword(s):  
Classification Problem ◽  
Group Method ◽  
Type I ◽  
Error Type ◽  
Reliable Technique ◽  
Case Record ◽  
Classification Techniques ◽  
Liquefaction Susceptibility ◽  
Seismic Liquefaction ◽  
Non Linear

Liquefaction susceptibility of soil is a complex problem due to non-linear behaviour of soil and its physical attributes. The assessment of liquefaction potential is commonly assessed by the in-situ testing methods. The classification problem of liquefaction is non-linear in nature and difficult to model considering all independent variables (seismic and soil properties) using traditional techniques. In this study, four different classification techniques, namely Fast k-NN (F-kNN), Naïve Bayes Classifier (NBC), Decision Forest Classifier (DFC), and Group Method of Data Handling (GMDH), were used. The SPT-based case record was used to train and validate the models. The performance of these models was assessed using different indexes, namely sensitivity, specificity, type-I error, type-II error, and accuracy rate. Additionally, receiver operating characteristic (ROC) curve were plotted for comparative study. The results show that the F-kNN models perform far better than other models and can be used as a reliable technique for analysis of liquefaction susceptibility of soil.

scholarly journals Methods for predicting peak discharge of floods caused by failure of natural and constructed earthen dams

1997 ◽  
Vol 33 (10) ◽  
pp. 2337-2348 ◽  
Author(s):  
Joseph S. Walder ◽  
Jim E. O'Connor
Keyword(s):  
Peak Discharge ◽  
Earthen Dams

scholarly journals Regional Liquefaction Susceptibility Mapping in the Himalayas using Geospatial Data and AHP Technique

2019 ◽  
Vol 116 (11) ◽  
pp. 1868
Author(s):  
Ramesh Pudi ◽  
Tapas R. Martha ◽  
Priyom Roy ◽  
K. Vinod Kumar ◽  
P. Rama Rao
Keyword(s):  
Susceptibility Mapping ◽  
Geospatial Data ◽  
Liquefaction Susceptibility
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