Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"Geotechnology"”.
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O crescimento urbano de Rio Claro e suas implicações nos riscos à inundação: cenários de 1970 a 2015
… of the city of Rio Claro and flood areas through geotechnology and analyze the changes in risk areas in the period from 1970 to 2015. It is known that the intense urbanization that took place in the cities in recent decades resulted in sealed soil, removal of native vegetation, buildings in …
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Optimal Image-Aided Inertial Navigation
The utilization of cameras in integrated navigation systems is among the most recent scientific research and high-tech industry development. The research is motivated by the requirement of calibrating off-the-shelf cameras and the fusion of imaging and inertial sensors in poor GNSS environments. …
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Hydraulic Performance of Porous Sediment Control Structures
Hydraulic performance of filter fabric and rockfill as well as their sediment trapping efficiency are studied in this research. The head-discharge relationship for filter fabric has been developed by first applying the Bernoulli equation to a single opening and then extending the principle to the …
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Exploratory Spatial Data Analysis for Origin and Destination Flow Data
The focus of this dissertation lies in the research tradition of ESDA, which requires explicitly the existence of geographical attributes in the datasets, interactive visualization tools and dynamic graphics. In this study, I propose a new set of techniques for exploring O-D flow data and integrate …
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Three-Dimensional Discrete Element Simulation of Granular Materials Using Polyhedral Particles
*This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Microsoft Office.
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Use of Cone Penetration Testing in the Interpretation of Ground Shaking From Paleoliquefaction Evidence
To evaluate seismic hazard in regions of infrequent earthquakes it is often necessary to rely on evidence left from earthquakes that occurred before seismographs were available. This evidence can consist of human observations or of evidence left in the geologic record. The New Madrid Seismic Zone …
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Reliability-Based Groundwater Monitoring System Design
Detection monitoring systems composed of a single row of wells at different spacing and different distances from the contaminant source were evaluated. It is shown that, out of these systems, the optimal detection system is composed of closely spaced wells located near the source of contaminants. …
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Mechanistic-Empirical Evaluation of the Mn/ROAD Low-Volume Road Test Sections
The objective of this study was to utilize Illinois Department of Transportation (IDOT) mechanistic-empirical procedures and Mn/ROAD low-volume road (LVR) data and information to verify/refine/modify analysis and design concepts and procedures for LVR flexible pavements. Laboratory test results, …
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Failure Modes of Asperities in Rock Discontinuities
This work has proven the significant role of tensile failure in fracture process of asperities under direct shear loading. The result of this work can be combined with future research to develop a more meaningful relationship between the peak shear strength of the rock joints and the applied normal …
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Jacking Loads and Ground Deformations Associated With Microtunneling
Fr=Cag' dptanCfFAcL Adjustments are appropriate for effects of delays, steering corrections, dewatering, etc.
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Settlement of Structures on Granular Soils Subjected to Static and Earthquake Loads
An updated version of database of static settlement records of footings on granular soils is presented. Records that involve settlement versus pressure relationships are used to develop an empirical method that explicitly consider, beside the other factors, the effect of stress level on settlement. …
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Predicting the Repercussions of Anthropogenic Landscape Modifications on the Biota Using Species Focused Adaptable GIS and Spatial Dynamic Models
Habitat fragmentation and species invasions are increasingly threatening the survival of native species worldwide. In this context, a set of tools and approaches was developed to help (1) improve our understanding of species relationships to the landscape and predict their habitat usage, population …
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Lateral Deformation and Associated Settlement Resulting From Embankment Loading of Soft Clay and Silt Deposits
Using the empirical database and the developed procedures, it was possible to make successful prediction of lateral deformation and associated settlement for embankments on soft clay and silt deposits.
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Visualization in Geomechanics With an Application to Deep Excavations
The second part of this dissertation explores the behavior of deep excavation numerical analyses, with the aid of the visualization techniques presented herein. First, a 2D plane strain excavation analysis is explored. Second, a 3D linear excavation is modeled using a variety of excavation …
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Guidelines for the Use of Expanded Polystyrene (eps)-Block Geofoam for the Function of Lightweight Fill in Road Embankment Projects
This dissertation presents a design guideline or procedure as well as an appropriate material and construction standard. It is anticipated that the results of this study will encourage greater and more consistent use of EPS-block geofoam as an alternative for construction of embankments over soft …
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Subsidence Damaged Homes Over Room and Pillar Mines in Illinois (Ground Movements, Damage Criteria)
In this thesis a relationship is established between residential damage and ground movements over Illinois room and pillar mines. Using this ground movement-damage criterion and knowing the expected level of ground displacement house damage can be estimated. Subsidence characteristics observed at …
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Nondestructive evaluation of wooden logs using ground penetrating radar
Presently there are no suitable non-invasive methods for precisely detecting the subsurface defects in logs in real time. Internal defects such as knots, decays, and embedded metals are of greatest concern for lumber production. While defects such as knots and decays (rots) are of major concern …
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Geologic feature prediction using roof bolter drilling parameters
The design of a safe and efficient roof support system is essential for any underground coal mining operation. All underground coal mines in the United States install roof bolts with a roof bolter as the primary means of supporting the mine roof. Proper application of roof bolting is dependent upon …
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Seepage in earth slopes with longitudinal drainage trenches
The major objective of this study was to determine the effect of hydraulic conductivity on the effectiveness and efficiency of longitudinal drains and on the time to reach steady state seepage under controlled laboratory conditions. An apparatus capable of simulating different slope angles and …
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