Showing papers in "Engineering Geology in 1997"

TL;DR: Fractal models describe hierarchical systems and are suitable to model soil structure and soil hydraulic properties as mentioned in this paper, but typically there is no coincidence in the values of the fractal dimensions characterizing different properties.

TL;DR: Fractal models for the fragmentation of heterogeneous brittle earth materials have been reviewed in this article for both scale-invariant and scale-dependent P( sol 1 b i ) at each level in the hierarchy.

TL;DR: In this paper, the authors evaluated the applicability of fractal dimensioning techniques to quantification of both physical particle roughness and grain size distribution of granular soil, and the results confirm the importance of differentiating between textural and structural aspects of roughness.

TL;DR: In this paper, the authors present the cumulative frequency-size distributions of landslides induced by precipitation in Japan and Bolivia as well as landslides triggered by the 1994 Northridge, California earthquake.

TL;DR: In this paper, aeolian deposition of the constituent particles is modelled by simple Monte Carlo methods and the typical vertical pores may be formed and allow certain basic structural types to be identified.

TL;DR: In this paper, the authors investigated the features of a novel material proposed to serve as an impervious liner in sanitary landfills, such as compaction, hydraulic conductivity, and strength.

TL;DR: In this article, the fractal dimension of the pore perimeter was derived for islands whose boundaries are fractal, where ϵ is some constant that depends on the length of the measuring grid size.

TL;DR: In this article, a series of results for the yielding of illitic clay at three different temperatures were presented, including isotropic consolidation, undrained triaxial compression with pore water pressure measurement, and drained tests along controlled stress paths to investigate yielding behaviour.

TL;DR: In this paper, the material and mass properties of the Cappadocian tuff were evaluated for the assessment of rock durability, and two dominant joint sets were found to not only control the formation but also control the structural stability of fairy chimneys.

TL;DR: In this article, a finite-difference scheme is used to calculate the flux of a single solute in a single fracture in the limit where the geometrical changes are very slow compared with the average fluid velocity.

TL;DR: In this article, the authors present field and some index properties of weathered Ankara andesites, carried out over a period of four years, which involved assessment of the rock mass weathering grades, conduction of simple field tests, Schmidt hammer and point load tests on the rock materials, characterisation of discontinuities, and collection of representative samples from each weathering grade for laboratory testing.

TL;DR: Lime piles have been used for two distinct purposes for the treatment of clay soils in situ as mentioned in this paper, the first is to improve soft soils to improve their bearing capacity and in this case uses relatively large diameter quicklime piles at close spacings.

TL;DR: In this article, a written computer program to estimate the box fractal dimension (DB) is verified by estimating DB of the triadic Koch curve for which the theoretical D is known, and the influence of a number of input parameters on the accuracy of estimated DB is evaluated using the same Koch curve.

TL;DR: In this article, an alternative hypothesis that development of the embayment was coeval with the passage of the Mississippi Valley graben system over the Bermuda hotspot about 90 Ma was proposed.

TL;DR: In this paper, the authors analyzed and modeled the behavior of a clay-based engineered barrier during its hydration phase under real repository conditions using a combination of hydro-mechanical and thermo-hydraulic models.

TL;DR: In this paper, the authors investigated the influence of radiogenic heat on the performance of the rock mass around a nuclear fuel waste repository and found that the heat-induced pore pressure increase around the repository has the potential to significantly increase the rate of groundwater flow, and affect the structural integrity of the soil mass.

TL;DR: A geomorphic study of the Mississippi River and its alluvial valley between Osceola, Arkansas and Friars Point, Mississippi has identified anomalous surface features that can be linked to known geological structures as discussed by the authors.

TL;DR: In this paper, the authors present a resume of the efforts by Indian researchers on this topic, with a brief review and comparison with the approaches of Bieniawski (1979) and Barton et al.

TL;DR: In this paper, the authors provide a detailed review of the factors influencing footwall slope instability in surface coal mining and the major instability mechanisms which have been recognized within the published literature, and illustrate the potential for investigating footwall failure mechanisms and stability using principally the distinct element method.

TL;DR: In this paper, a number of basic geotechnical and index properties of fresh and weathered mudstones were determined, and the results showed that the strength of the fresh mudstones from near Kirkheaton was notably higher than that of the mudstone from near Tow Law.

TL;DR: The pore space of rock salt from the Lower Salt Unit of the Cardona Saline Fm. (Spain) was characterized using three independent methods (mercury injection porosimetry, saturation in a low viscosity isoparaflin and gas adsorption) as mentioned in this paper.

TL;DR: In this paper, a criterion suitable for the selection of lateritic soil developed on sandstone as a paving material, under similar climatic conditions to those prevailing in south-east Queensland, Australia, has been proposed.

TL;DR: In this paper, the results of the joint relocation of events recorded during 1989-1992 by the PANDA network in the central New Madrid seismic zone were presented. But the results were limited to a subset of 580 events and the single event locations may be in error by as much as 1 km in depth, depending on where the events are located.

TL;DR: In this article, semi-variogram analysis can be used for identifying statistical self-affine behavior, however, some error and interpretation is involved; therefore, estimating the Hurst dimension and from this the fractal dimension can be misleading.

TL;DR: In this article, a combined modeling approach using observations from three earthquakes that occurred within the environs of the New Madrid Seismic Zone: two Missouri earthquakes from September 26, 1990 and May 4, 1991; and the southern Illinois earthquake of February 5, 1994.

TL;DR: In this article, vertical seismic compressional and shear-wave profiles were collected from three shallow boreholes in sediment of the upper Mississippi embayment, including a 60m hole at Shelby Forest, Tennessee, and a 27m hole in Risco, Missouri, which are in Holocene Mississippi river floodplain sand, silt, and gravel deposits.

TL;DR: In this paper, a methodology for quality evaluation applied to slate extraction is developed in three phases, as a tool of support to the planning, which can be seen as a recovery index of the slate mass, being its variance intervals established in the analyzed faces.

TL;DR: In this article, an engineering geology evaluation method based on an artificial neural network (AN 2 EGEM) is presented, which eliminates the defects of traditional evaluation methods, which rely excessively on experience and are difficult to quantify.

TL;DR: In this article, the Fluorspar Area Fault Complex (FAFC) and the Ste. Genevieve Fault Zone (SGFZ) were investigated in southernmost Illinois.