Showing papers in "Engineering Geology in 2004"

TL;DR: In this article, the authors identified the empirical triggering thresholds for the Piedmont Region Four meteoric events were selected and analysed (November 4-5-1994, July 7-8-1996, April 27-30-2000, and October 13-16-2000) and the triggering threshold is given by the expression: NI=−009ln[NCR]+054 (where NCR is the normalised cumulative critical rainfall, [mm/PMA]×100) In detail an operating procedure which is presently being verified and tested in the studied area is described

TL;DR: In this article, a landslide susceptibility index (LSI) was calculated using the rating and weight of each factor to landslide occurrence, and the landslide susceptibility map was produced using the index.

TL;DR: In this article, two new concepts, seed cells and percentile maps, are introduced to refine the previously defined methods in a more data-dependent trend, and they are used to classify the input parameter maps, the data distributions of seed cells in the parameter maps are divided into a number of classes on the basis of their distribution's percentile break-points upon which the parameters are directly dependent on the seed cell distributions, hence to the data itself.

TL;DR: In this article, a new attempt is tried to produce landslide susceptibility map of a part of West Black Sea Region of Turkey, and a landslide inventory database is compiled by both field surveys and airphoto studies.

TL;DR: In this paper, the authors used Geographic Information Systems (GIS) to conduct a spatial characterization of the slope failures, including distribution of type, size, slope angle, bedrock geology, ground motion, and distance from earthquake source.

TL;DR: Wang et al. as mentioned in this paper constructed the essential spatial database of landslides using the GIS techniques and established the quantitative relationships between landslides and factors affecting landslides by the certainty factor model.

TL;DR: In this paper, the authors evaluated the impact of the Chi-Chi earthquake on the occurrence of landslides and explored the initial conditions triggering debris flows in the Chenyulan River watershed in central Taiwan.

TL;DR: In this article, a petrophysical durability estimator (PDE) is proposed, which is the ratio between parameters and estimators, which are based on pore structure and the strength of the material.

TL;DR: In this article, an overview of flood characteristics with respect to their applicability for estimating and analysing direct flood damage to buildings is presented, where flood actions are defined as energy transfers, forces, pressures, or the consequences of water or contaminant contact.

TL;DR: In this article, the authors present a summary of the principal features of earthquake losses incurred in damaging earthquakes over the last 15 years, considering both ground failure and ground shaking as sources of damage, and their relative contribution to overall damage in each section of the regional infrastructure.

TL;DR: In this article, a brief review on land subsidence and its investigation and remedial works made in China is presented, which gives a summary on the current status and main features of land subsiding in China.

TL;DR: In this paper, the formation of secondary porosity in different types of rock taken from different parts of Turkey was examined and the results are presented in this paper and the aim of this study was to observe changes in porosity due to weathering.

TL;DR: In this paper, the authors presented results from a quantitative analysis of a new inventory of n=232 landslide dam occurrences in New Zealand, which were expanded by documentation of recent events and evidence from a regional air-photo reconnaissance focused on the upland regions of southwestern South Island.

TL;DR: In this paper, the authors identified the rainfall conditions that triggered landslides in the Armea valley using cumulative-and continuous-rainfall data, combined with detailed information on the time of landslide occurrence.

TL;DR: In this paper, the statistical relationship between hardness value and physicomechanical properties of constructional and cover rocks was investigated, and high correlations were found between the hardness methods (Shore Scleroscope, Schmidt hammer hardness), which are cheap and easy to use, and other physical and mechanical properties.

TL;DR: In this paper, both theoretical and numerical analyses for wetting band depth were presented based on the soil-water characteristic curve obtained using filter paper as well as tensiometer tests, and it was found that the magnitude of wetting front suction plays a key role in the stability of slopes in weathered soils.

TL;DR: In this paper, a series of index properties, engineering properties, mercury porosimetry tests and scanning electron microscope (SEM) examinations were performed on residual soils from two major geological formations in Singapore.

TL;DR: In this article, the effects of silica fume on permeability, swelling pressure and compressive strength of the compacted clay liners as a hydraulic barrier were examined, and the test results showed that the sample with silica-fume exhibits quite low permeability and swelling pressure.

TL;DR: In this paper, the results of laboratory testing of sedimentary rocks under point loading as well as in uniaxial and triaxial compression were presented for soft to strong rocks.

TL;DR: A Matlab-based BPNN model is developed, and the data from the case study are used to train and test the developed model to enable prediction of the magnitude of the ground movements with the help of input variables that have direct physical significance.

TL;DR: An attenuation relationship of peak ground acceleration derived from Turkish strong motion data for rock, soil and soft soil sites and an iso-acceleration map of Turkey based on this relationship were presented in this paper.

TL;DR: A comprehensive review of the current state of the stone column technologies as a liquefaction countermeasure is presented in this paper, which provides insights for design and construction, compile the latest research developments, and identify sources of useful information.

TL;DR: In this article, the authors focused on the significant influence of the compaction energy on the percent swell/swelling pressure in compacted Cyprus soils and identified the relationship between percent swell and the swelling pressure as a rectangular hyperbola.

TL;DR: In this article, the authors performed the laboratory tests on the swelling pressure and swelling deformation of four kinds of bentonite produced in Japan and the United States and proposed the simplified evaluation of swelling characteristics of various bentonites on the basis of microscopic analysis.

TL;DR: In this paper, the authors applied two simple hydrological models, coupled with the infinite slope stability analysis, to the May 1998 landslide event in Sarno, Southern Italy.

TL;DR: In this article, a combination of empirical and physically based hydrological models has been used to analyze historical data on rainfall and debris-flow occurrence in western Campania, to examine the correlation between rainfall and disaster events.

TL;DR: In this paper, a statistical method is used to model rock heterogeneity and the results from the statistical modeling are in surprisingly good agreement with those from the homogenisation modelling. But the results of the statistical model are not as good as those from homogenization theory.

TL;DR: In this article, the authors used a numerical discontinuum modeling technique for a 700m high rock slope in western Norway to estimate the volume of the rock mass that could potentially slide under static and dynamic forces.

TL;DR: In this article, the authors investigated how crack initiation and propagation occurs during uniaxial cyclic loading in a drill core from an isotropic granite and found that the major mode of the existing microcracks correlates with the orientation of a well-developed horizontal joint set.

TL;DR: In this paper, the results obtained from a detailed field survey and aerial view interpretation of the Apuan Alps were obtained from three typically mountainous basins, characterised by narrow, deep cut valleys and steep slopes, where many rock types outcrop.