Showing papers in "Engineering Geology in 2005"

TL;DR: Logistic regression analysis and neural networks are applied to prepare landslide susceptibility map of the problematic segment of the pipeline in the Hendek region of Turkey and the result found by neural network is more realistic.

TL;DR: In this paper, the results of tests conducted on granitic rocks of various weathering grades in the light of the conclusions of this review were presented, and it was found that a very good correlation exists between L and N hammer rebound values and that both hammers are fairly sensitive to the physical properties, particularly to dry density though less so to effective and total porosities.

TL;DR: In this paper, an approach for assessing the landslide risk potential, mainly for shallow landslides, with reference to Jabonosa river basin in the Venezuelan Andes using artificial neural networks (ANNs), specifically a Multilayer Perceptron with backpropagation learning algorithm.

TL;DR: In this paper, the authors presented the results of a comprehensive study on slope stability analyses and landslide susceptibility mapping carried out in part of Sado Island of Japan, where they used two methods namely, the analytical hierarchy process (AHP) and logistic regression, to produce and later compare two susceptibility maps.

TL;DR: In this paper, the authors demonstrate the influence porosity and fissuration exert on the physico-mechanical properties and durability of nine Portuguese ornamental granites with different petrographical and physical characteristics.

TL;DR: In this article, Alonso et al. used oedometer tests on an artificially prepared bentonite-sand mixture (80% bentonite by dry mass) to identify the most important features controlling soil behaviour.

TL;DR: A detailed landslide inventory map was prepared and geology, slope, aspect, elevation, topographic-wetness index and stream power index were considered as conditioning factors.

TL;DR: In this paper, the impact of topographic amplification on the triggering of landslides during the 1994 Northridge earthquake was investigated and it was shown that the observed extensive rock sliding and falling would have not been possible under unamplified seismic conditions, which would have generated a significantly lower number of areas affected by landslides.

TL;DR: In this article, a large number of uniaxial compressive strength (UCS) tests were conducted on the specimens of jointed block mass having various combinations of orientations and different levels of interlocking of joints.

TL;DR: In this article, a probabilistic analysis procedure and related algorithms were developed by extending the Monte Carlo simulation to analyze rock slope stability for Interstate Highway 40 (I-40), North Carolina, USA.

TL;DR: In this article, a 10-fold classification for debris flow size is proposed based on total volume, peak discharge and area inundated by debris, and different size classes allow the estimation of travel times to points of interest based on empirically derived equations.

TL;DR: In this article, a four-layer BPNN model with five input nodes, two hidden layers, and two output nodes was constructed using a training data set of landslide samples throughout the Qing River area.

TL;DR: In this article, an experimental study on the thermo-hydro-mechanical behavior of two heavily overconsolidated clays is presented, and the results show similarities and differences between the observed behaviour of the two types of clays that have been interpreted on the basis of their different structures and regarding their proportion of intraaggregate water.

TL;DR: In this article, the authors investigated the crack initiation angle and subsequent crack propagation path for limestone rock specimens under various mixed mode I-II loading conditions, including pure mode I and pure mode II.

TL;DR: In this article, the authors discuss the factors that control the typical manifestations of liquefaction that are found in continental field settings, mainly in terms of the local geologic field situation and the geotechnical properties there.

TL;DR: In this paper, the authors presented an application of GPS to monitor the La Valette landslide, located in the Ubaye Valley in the southern French Alps, which is composed by an upper rotational part, a central part with generally translational movement and a lower part which occasionally transforms into mud flows during intense rainfall events.

TL;DR: In this article, the authors proposed two complementary levels of analysis for spaceborne differential interferometric SAR (DInSAR) to detect unknown subsidence phenomena over large areas.

TL;DR: The Turkish Landslide Inventory Mapping Project (TLIMP) as discussed by the authors has been used for the purpose of establishing landslide inventory maps at medium (1:25,000), regional ( 1:100,000) and national scale.

TL;DR: In this paper, the authors used a fully two-dimensional FEM model to simulate landslide spreading downslope, allowing the use of different constitutive models and yield rules with the possibility to model and study internal deformation of the landslide mass, as well as material entrainment and deposition.

TL;DR: In this article, a study of the hydromechanical behavior of a compacted swelling material in the range of suctions comprised between 0 and 40 MPa was performed, and two kinds of suction controlled oedometer devices based on two different suction control techniques were developed.

TL;DR: In this paper, a large-scale in situ experiment performed at the Grimsel Test Site (GTS, Switzerland) that reproduces a gallery for HLW disposal according to the Spanish concept, with two heaters simulating the containers and a bentonite barrier around them.

TL;DR: In this paper, a detailed investigation of one such slide, the 1999 Rufi slide, is presented, where the initial rockslide failure plane predominantly developed and passed through the marl beds, as dictated by the penetration of the weathering front into the marls, and not along reactivated shears or the bedding plane contact between the MARls and overlying conglomerates, and numerical modelling results based on coupled hydromechanical distinct-element analysis were able to reproduce this mechanism by incorporating a progressive strength degradation procedure correlated to mapped weathering grades.

TL;DR: In this article, in situ soil profiles are obtained based mainly on borings after the 2003 Lefkada earthquake, and the results indicated that the silty sandy layer, which lies beneath the artificial fill in the coastal zone in Lefkatada town, had liquefied during the 14 August earthquake.

TL;DR: In this article, a large scale probabilistic seismic hazard analysis (PEGASOS) was created and performed as a research project, sponsored by the Swiss NPP utilities to improve the assessment methodology for seismic risk in support of the plant-specific seismic PRAs.

TL;DR: In this article, the authors examined direct and indirect aquifer hydraulic information scattered in various sources and demonstrated that such a model may be inappropriate, and that, at least in some places, a relatively high hydraulic conductivity (K) zone (HKZ) may exist at depth, either in the lower saprolite or at the rockhead.

TL;DR: Burland et al. as mentioned in this paper described the types of ground deformation measurement often used in tunnelling, the difficulties in obtaining these measurements, the methods most commonly used for their evaluation, and the use of deformation measurements (a) in the selection of tunnel excavation and support systems and (b) in establishing early warning systems against ground collapse or damage to structures at ground surface.

TL;DR: In this article, a comprehensive study of landslide processes was carried out in the city of Dessie and its environs in northern Ethiopia, where a method of landslide susceptibility mapping that adapts to the area of the hillside was presented.

TL;DR: In this paper, a method to determine how to locate suitable sites for hazardous waste landfilling area by using the site screening study is presented, which demonstrates how the criteria such as geology, topography, land use, climate, earthquake and other related factors can be introduced into the overlayer technique to determine the suitable site selection in a region.

TL;DR: In this paper, the authors compare and contrast Geokinetics' and Hak Milieutechniek's commercially driven approach with that of the more traditional and academic approach adopted by many other workers in the field.

TL;DR: In this article, the role of groundwater and sea weathering on the strength of the chalk rocks exposed on the coastline of the English Channel in Normandy, NW France was evaluated using a combination of UCS tests and SEM observations.