Showing papers in "Engineering Geology in 2009"

TL;DR: In this paper, a review of the application of close-range terrestrial digital photogrammetry and terrestrial laser scanning for discontinuity characterization on rock cuts is presented, and case studies are used to estimate the accuracy of several 3D model registration approaches.

TL;DR: In this paper, experimental results on the use of Portland cement in the modification and stabilization of soils in the state of Washington, USA, were presented, which showed significant improvement in drying rate, workability, unconfined compressive strength, and shear strength.

TL;DR: In this paper, a full-scale field experiment involving artificial rainfall has been conducted in an instrumented loess cut slope in an expressway in a loess plateau, Northwest China.

TL;DR: In this paper, a 2D discrete element model (PFC2D) is used to simulate the kinematic behavior of a major landslide triggered by the Chi-Chi earthquake in Taiwan.

TL;DR: In this paper, a simple explanation for the remarkably low frictional resistance to motion demonstrated by large intact blockslides (e.g., Waikaremoana, New Zealand), volcanic debris avalanches (eg Socompa, Chile) and large rock avalanches was proposed.

TL;DR: In this paper, the hydraulic conductivity of GMZ bentonite was determined by simultaneous profile method, and the water retention properties were studied under both confined and unconfined conditions.

TL;DR: In this article, the engineering properties of unfired clay bricks produced during the first industrial trial of masonry material development carried out at Hanson Brick Company, in Stewartby, Bedfordshire, under the Knowledge Exploitation Fund (KEF) Collaborative Industrial Research Project (CIRP) programme were reported.

TL;DR: In this paper, the authors compared X-ray computed micro-tomography (micro-CT), water absorption under vacuum and mercury intrusion porosimetry (MIP) to determine the microstructure of concrete and natural building stones.

TL;DR: The 1962 and 1970 Huascaran mass movements, originated as rock/ice falls from the mountain's North Peak, transformed into higher-volume high-velocity mud-rich debris flows by incorporation of snow from the surface of a glacier below Huasaran and the substantial entrainment of morainic and colluvial material from slopes below the glacier terminus.

TL;DR: In this paper, a finite element code is used to simulate the motion of a moving landslide mass on materials with different properties and along very sharp topographies, where erosion and deposition can be modelled as well as interaction with obstacles of different characteristics.

TL;DR: In this article, the physical, dynamic and mechanical properties of a variety of serpentinite samples, taken from the Othrys and Kallidromo mts (Central Greece), were tested in accordance with ASTM and ISRM standards.

TL;DR: In this article, it is suggested that the identification of matrix potential with ( u a ǫ−ǫ u w ) results from neglecting the adsorption potential, and adopting an unrealistic pore space model.

TL;DR: In this paper, a large-scale model test simulating the performance of a sandy silty soil slope subjected to water level rise and drawdown is presented, and the failure mode that developed during rapid drawdown was of the multiple retrogressive rotational type.

TL;DR: Shanghai Administrative Region (SAR) is located on the deltaic deposit of the Yangtze River and is composed of an alternated multi-aquifer-aquitard system (MAAS).

TL;DR: In this paper, the effects of changing cement incorporating ratio, water content, cement mixing ratio, and contents of Mg2+, Cl−, and SO42− on the unconfined compressive strength of the salt-rich soil-cement were investigated using X-ray diffraction, scanning electronic microscopy, and backscattered diffraction technology.

TL;DR: In this paper, a kinematic study of the Portalet landslide (Sallent de Gallego, Central Spanish Pyrenees), triggered by the construction of a big parking area at the toe of the slope, is presented.

TL;DR: In this paper, the deformation within a large slide (Avignonet) affecting laminated clays which were deposited in a glacially dammed lake during the Wurm period was physically characterized.

TL;DR: In this paper, a simple model for preliminary evaluation of rainfall-induced slope failure in Malaysia is presented, which is based on the modified infinite-slope-limit-equilibrium method.

TL;DR: In this article, a numerical analysis of the loading behavior of embankments on piles reinforced by geosynthetic sheet is presented, which is based on the used of a coupling between finite and discrete element methods especially developed to model this kind of structures.

TL;DR: In this paper, the authors estimate that approximately 7200 people were killed by earthquake-triggered landslides in the epicentral region of the Khait earthquake and that, in terms of loss of life, the 1949 Yasman valley loess flow was one of the most destructive landslides.

TL;DR: In this article, an ant colony optimization (ACO) algorithm is developed to solve the factor-of-safety minimization problem, where the initiation point and the shape of the slip surface are treated as the search variables.

TL;DR: In this article, the authors used the intrinsic properties of the untreated and reconstituted soil as a reference framework to interpret the effect of cementation on the mechanical behaviour of the dredged materials.

TL;DR: In this paper, the compressive strength and microstructure of unfired clay masonry bricks were investigated using Scanning Electron Microscopy (SEM) with a Solid-state Backscattered Detector (SBD) and Energy Dispersive X-ray (EDX) analysis.

TL;DR: In this paper, European Remote Sensing satellites ERS-1 and eRS-2 synthetic aperture radar (SAR) data are used to analyze terrain deformation in the area of Wieliczka, Poland using interferometric techniques.

TL;DR: In this article, the thermal conductivities of granite were measured under different conditions of porosity and water content to investigate the effects of the porosity of the granites and the water content on thermal conductivity.

TL;DR: In this article, the authors used the Anlesi landslide as a typical case study to investigate in detail the mechanism of translational rock slides in the Three Gorges Reservoir, China.

TL;DR: In this article, five large, catastrophic rockslides occurred, aligning along convex slope breaks 150 to 300 m above the present river bed of the Mimi River; the slope breaks are inferred to have been formed by rejuvenation of the river.

TL;DR: In this article, an electrical resistivity tomography (ERT) technique was used and the tomographic data were calibrated using geological observations and borehole studies to improve the hydrogeological knowledge of this coastal aquifer system.

TL;DR: In this paper, the authors used the continuum model of hydraulic flow, SHALTOP2D, based on the equation of Bouchut and Westdickenberg to simulate numerically the landslide dynamics.

TL;DR: In this paper, a comprehensive research program was conducted on different clay-bearing rocks selected from Turkey to assess their disintegration characteristics under both field and laboratory conditions, and a durability classification system consisting of six classes was suggested.