Showing papers in "Engineering Geology in 1994"

TL;DR: In this paper, the authors applied a correlation analysis in conjunction with multivariate statistical techniques to petrographical and laboratory geomechanical data for the investigation of correlations that exist between these properties of a selected sandstone, and to suggest inexpensive predictive models in a preliminary investigation.

TL;DR: Deep-seated gravitational slope deformations and their relationships with tectonic deformation of rocks are considered, to examine the viewpoint of Tectonics as a causative factor in slope deformation as discussed by the authors.

TL;DR: In this paper, a review of the literature on the formation of subsiding loess can be found, and the role of N. Ya Denisov as the subsidence pioneer is considered.

TL;DR: In this paper, a modified Bromhead ring shear was used on samples with varying moisture contents, and it was found that the effective apparent cohesion gradually increases and the effective internal friction angle decreases with an increase in moisture content.

TL;DR: The Silica-Titania Index as mentioned in this paper is a new index of chemical weathering, particularly for Sri Lanka, which can be used to determine the degree of weathering in chemically weathered silicate rocks of other countries in tropical regions.

TL;DR: In this article, a comparison of several models of the long runout Ontake-san debris avalanche is presented, with additional constraints on velocity and emplacement time, and it is shown that a substantial decrease in flow resistance occurred as a function of displacement.

TL;DR: In this paper, a modification to the test is presented to overcome this problem and the interpretation of the test results has been extended to enable calculation of the specific wear rate which is a more precise measure of the abrasiveness of materials.

TL;DR: In this article, the mass rock creep was inferred from geologic and geomorphic investigations of five rockslide-avalanches in the Akaishi Mountains, and it was characterized by a slow but steady downslope bowing of steeply dipping foliations, which accompanied intensive deformation and fragmentation of the rock mass by shearing along foliations.

TL;DR: In this paper, a self-potential survey of streaming potentials along the eastern embankment of a dam was very successful in locating leakage areas and determining the relative intensity of discharge.

TL;DR: In this article, two types of cementing agent, Portland cement and calcium carbonate, were used to assess the strength properties of stabilized granular soils and evaluate the behaviour of cement-treated sands, stabilized samples were prepared and tested in the laboratory under controlled conditions.

TL;DR: In this article, an in-depth study of some of the rockfalls enabled us todefine for one of these towns the most suitable shock restitution coefficients of the detritical pyroclastic deposits present on the terraces situated at the foot of the cliffs.

TL;DR: Yim et al. as mentioned in this paper proposed a new geological model for the offshore Quaternary sedimentary sequence of Hong Kong and found that the engineering properties of the sediments are closely related to the palaco-environmental changes.

TL;DR: In terms of the slake-durability test, anhydrite has a very high durability and gypsum a high to very high hardness with the stronger rocks yielding higher values of durability as mentioned in this paper.

TL;DR: In this article, the effects of rock mass quality and joint orientation on tunnel blasting were investigated and it was concluded that loading equipment with a larger capacity and deeper blast holes are required in formations with joint planes perpendicular to the tunnel axis.

TL;DR: In this paper, the authors examined the major geotechnical and environmental geologic problems arising from the characteristics (topography, geology and soil types, including their properties and areal distribution) and human engineering activities (slope excavation, underground mining) of Tongchuan city.

TL;DR: In this paper, the authors suggest that the concept of aninclusion with anisotropy and heterogeneity of mechanical properties may be useful to explain some cases of σH rotations.

TL;DR: In this article, an eastern Saudi sabkha soil was chemically stabilized at its natural moisture level, which varies from 16% to 22% in addition to the characterization of the soil and standard compaction tests, cement and lime Sabkha mixtures were prepared at five additions and cured for up to 90 days in plastic wrap.

TL;DR: In this paper, the impact of pumping water out of a planned new polder (Markerwaard) on the adjacent land areas has been evaluated and potential measures for mitigating the harmful effects of land reclamation were discussed.

TL;DR: In this article, the behavior of geological faults during mining subsidence is still poorly understood, and it is generally appreciated that the reactivation of faults during mine events, and the consequent formation of a step in the surface topography, is complex and variable, and can result in extensive and spectacular structural damage.

TL;DR: In this article, the authors apply the same principles to the accelerating subsidence on Mt. Etna's eastern flank prior to the eruptions of 1985 and 1989 and show that rough estimates of eruption dates could have been obtained several months in advance.

TL;DR: The Chinese underground nuclear test site in the Kuruktag and Kyzyltag mountains of the Xinjiang Uygur Autonomous Region of northwest China, is the location of sixteen underground tests that occurred between 1969 and 1992 as discussed by the authors.

TL;DR: In this article, an attempt has been made to illustrate an instability problem that occurred in a highwall externally loaded by a spoil pile in the southern part of the pit, and detailed examination of geotechnical data with movement monitoring records indicate that the instability occurred by shallow seated circular failures mainly caused by the stresses exerted by the pile.

TL;DR: The island of Hokkaido, Japan, is subdivided into nineteen regions on the basis of regional geology and landslide distribution, and the relationship between landslide distribution and geologic structure for several areas is analyzed in this paper.

TL;DR: In this paper, the consolidation and shear strength of a lateritic soil developed on Tertiary basalt in southeast Queensland, Australia has been investigated using Oedometer tests on remoulded specimens and on a specimen obtained from an undisturbed block sample.

TL;DR: In this paper, a number of geotechnical analyses were carried out on selected carbonate rock samples from ten locations in Nigeria, including Abini, Ashaka, Calabar Ikom road, Ikot Okpora, Mfamosing and Nkalagu.

TL;DR: In this paper, a parabolic-type empirical criterion τff = N·σff + To)M is proposed to describe the strength behavior of soilcrete under low and tensile stress regions.

TL;DR: Rau and de Mulder as mentioned in this paper have made progress in the application of geologic principles for land use planning in large Asian cities and coastal areas and developed effective programs for providing all types of geological information to planners in China, Malaysia, Indonesia and the Philippines.

TL;DR: Liquefaction effects generated by the 1977 San Juan Province, Argentina, earthquake (Ms = 7.4) are described in this article, where the authors show that the larger and more abundant effects were concentrated in the 60-km long band of the lowlands in the Valle del Bermejo and in an equally long band along the Rio San Juan in Valle de Tulum.

TL;DR: In this article, two types of flow tests have been performed: pseudo-constant head tests and transient pulse tests on expansive grout plugs with diameters of 160 mm and 200 mm, and length-to-diameter ratios of one, in boreholes in basalt blocks and in steel pipes.