Bulletin of Engineering Geology and the Environment

article

The usability of the Cerchar abrasivity index for the evaluation of the triaxial strength of Misis Fault Breccia

Sair Kahraman, Michael Alber, Osman Gunaydin, Mustafa Fener

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 163-170

The development of some predictive models for the geomechanical properties of fault breccias will be useful for geo-engineers, because the preparation of smooth specimens from the fault breccias is usually tedious and expensive. In this study, simple and multiple regression analysis were applied to the data pertaining to Misis Fault Breccia to develop predictive models for the differential stress...

article

Slope stability assessment using both empirical and numerical methods: a case study

Ebrahim Fathi Salmi, Saeed Hosseinzadeh

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 13-25

Estimating the mechanical properties of a rock mass is an inherently complex task involving numerous uncertainties, especially when performing rock slope stability analysis. Conventional rock mass classification systems with essential adjustments to account for rock discontinuities are a feasible approach to analyzing rock slope stability. Moreover, back analysis of a failed or failing slope can be...

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Stability analysis of the Lingshan gold mine tailings dam under conditions of a raised dam height

Baotian Xu, Yuying Wang

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 151-161

The Lingshan gold tailings dam was constructed using the upstream method. To ensure that the Lingshan tailings pond is safe in its current condition and during future operation, a stability analysis was necessary. In this study, the performance of the tailings material was analyzed based on such geotechnical parameters as the grain size distribution, cyclic triaxial strength, and undrained triaxial...

article

Risk assessments on active faults in Taiwan

J. P. Wang, Min-Hao Wu

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 117-124

Engineering risk assessment is to estimate the structure’s failure probability multiplied by its failure consequences. On the other hand, the analysis was sometimes performed on a more general basis, utilizing a few indicators to quantify relative risk levels for decision-making. On the basis of such a framework, this paper introduces a novel risk assessment on 18 active faults in Taiwan, considering...

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The use of neural networks for CPT-based liquefaction screening

Yusuf Erzin, Nurhan Ecemis

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 103-116

This study deals with development of two different artificial neural network (ANN) models: one for predicting cone penetration resistance and the other for predicting liquefaction resistance. For this purpose, cone penetration numerical simulations and cyclic triaxial tests conducted on Ottawa sand–silt mixes at different fines content were used. Results obtained from ANN models were compared with...

article

Identification and assessment of the erosion risk on the K'sob watershed (eastern Algeria)

Rachid Benkadja, Faissal Boussag, Abdelhalim Benkadja

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 91-102

The estimated of soil losses by erosion in semi-arid regions is often difficult due to the complex interaction of many factors such as climate, geology, land use, topography and human activities. RUSLE, Gravilovic and ICONA models are used to evaluate soil losses and characterize degraded areas in the K’sob watershed (1,482 km²), located north eastern Algeria, in order to implement management intervention...

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Comparison of the landslides triggered by the 2013 Lushan earthquake with those triggered by the strong 2008 Wenchuan earthquake in areas with high seismic intensities

Genlong Wang

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 77-89

The epicenters of the 2013 Lushan earthquake and the 2008 Wenchuan earthquake were both in the Longmen Mountains, in areas with similar geographical, geological, and geomorphological conditions. However, there are some differences between the landslides triggered by the two earthquakes. Correlations between the occurrence of landslides and geological parameters such as the distance from the seismogenic...

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An investigation of the potential environmental contamination from the leachate of the Rasht waste disposal site in Iran

Mohammad Nakhaei, Vahab Amiri, Khalil Rezaei, Firouz Moosaei

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 233-246

This research deals with detecting the underground layer geometrics and conditions, probable faults and crushed zones, thickness of alluvium, determination of pollutant plume development, and groundwater quality in the study area. The Visual HELP and HYDRUS programs were used to evaluate hydrologic properties and contaminant transport, respectively. All required data which consisted of the geotechnical...

article

A comparative study of landslide susceptibility mapping using landslide susceptibility index and artificial neural networks in the Krios River and Krathis River catchments (northern Peloponnesus, Greece)

Christos Polykretis, Maria Ferentinou, Christos Chalkias

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 27-45

The main scope of this study is to compare the performance of a conventional statistical method like the landslide susceptibility index (LSI) and a soft computing method like artificial neural networks (ANNs). These models were applied in order to realistically map landslide susceptibility (LS) in the Krathis and Krios drainage basins in northern Peloponnesus. The relationship between landslides and...

article

Joint set intensity estimation: comparison between investigation modes

Stéphanie Mahé, Muriel Gasc-Barbier, Roger Soliva

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 171-180

Recent mathematical calculations allow us to define set fracture intensity (I), i.e., the amount of rock mass affected by fracture sets, independently of the investigation mode. This parameter, characteristic of each rock mass, is of much interest to describe the mechanical response of the rock mass to external influences. The aim of this work is to apply these mathematical equations on one site using...

article

Assessment of conventional French railway sub-structure: a case study

T. V. Duong, Y. J. Cui, A. M. Tang, N. Calon, more

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 259-270

A statistical study was firstly undertaken on problems that occurred in a period of more than 1 year and were related to train circulation in the entire conventional French railway network. Emphasis was put on the degradation of track components. The analysis evidenced the particular importance of sub-grade quality in the performance of the whole track. After this general analysis, a conventional...

article

Accurate determination of the Taşkent (Konya, Turkey) landslide using a long-range terrestrial laser scanner

M. Zeybek, İ. Şanlıoğlu

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 61-76

Landslides are a common type of mass movement that occur in large numbers and have significant effects on topography. In Turkey, landslides rank second after earthquakes among natural disasters that cause widespread loss of life and property. This study investigates the monitoring of the Taşkent Landslide (Konya, Turkey), which has considerably affected the local topography. The landslide in Taşkent...

article

Role of granitic aggregates in the deterioration of a concrete dam

I. Fernandes

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 195-206

A concrete dam was built on the early 1970s in the Douro River about 70 km from the estuary in the Atlantic Ocean, at Porto city. According to other studies developed in Portugal and some reports in the literature, granitic aggregates can be potentially reactive in concrete. The study of the concrete was, therefore, focused on the assessment of the deterioration of concrete by alkali-silica reactions...

article

Time evolution of landslide damages to buildings: the case study of Lungro (Calabria, southern Italy)

Loredana Antronico, Luigi Borrelli, Roberto Coscarelli, Giovanni Gullà

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 47-59

In the last decades, building damage caused by landslides in urban areas has increased due to the rapid growth of urbanization even on landslide-prone slopes. This work presents the analysis results of landslide damage evolution by means of a macrodamage index in relation to the characteristics of landslides. The study area is located in southern Italy, and is affected by slow-moving landslides, which,...

article

Piezometric variations in the basaltic massif beneath the Itaipu hydroelectric plant (Brazil/Paraguay border): Right Buttress Dam

Josiele Patias, Lázaro Valentin Zuquette, José Alcino Rodrigues-Carvalho

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 207-231

This article describes a case study of the changes in the hydrogeotechnical behavior of a portion of the foundation block of the Itaipu Dam, which is located on the Parana River on the border between Brazil and Paraguay. The study focuses on the foundation buttress blocks of the Right Buttress Dam, where the most permeable regions of the massif are monitored by standpipe piezometers. The behaviors...

article

Deformation characteristics and failure mode of the Zhujiadian landslide in the Three Gorges Reservoir, China

Xinli Hu, Ming Zhang, Miaojun Sun, Kaixiang Huang, more

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 1-12

Water impoundment of the Three Gorges Reservoir has induced more than 5,000 landslides or potential landslides. These are huge threats to the safety of the dam and the people living in the reservoir area. The deformation characteristics and failure mode of the landslides are important factors in landslide stability evaluation and reinforcement design. The work reported in this paper used the Zhujiadian...

article

Estimating the standard deviation of soil properties with limited samples through the Bayesian approach

J. P. Wang, Yun Xu

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 271-278

Characterizing the standard deviation of soil properties is important to a geotechnical probabilistic analysis, and the task is usually achieved with sufficient samples. However, sometimes soil samples or soil tests in a project could be limited (e.g., only one sample), making classical statistics approaches less applicable to the estimating. In this technical note, we introduce a new Bayesian algorithm...

article

Electrical resistivity use in the design of a drainage structure

H. Hammoum, F. Khaldaoui, A. Zoreik, M. Touat, more

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 247-258

This study discusses the effects of a rise in groundwater level on a platform for building construction for residential use in a training school, located west of Algiers (Algeria). To ensure the protection of the residential area, it was necessary to design and implant an efficient drainage system. It was then important to determine the depth of the dry ground and the extent of saturated ground. Geophysical...

article

Effects of the ratio of flaw size to specimen size on cracking behavior

Xiao-Ping Zhang, Louis Ngai Yuen Wong, Sijing Wang

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 181-193

To investigate the size effects on the cracking behavior of flaw-containing specimens under compressive loading, rectangular parallelepiped specimens containing a single centrally located flaw are numerically loaded using the bonded-particle model (BPM). Effects of the ratio of flaw size (length) to specimen size on cracking behavior are carefully studied. The numerical results show that increasing...

article

Mining-induced geo-hazards with environmental protection measures in Yunnan, China: an overview

Yu-You Yang, Ye-Shuang Xu, Shui-Long Shen, Yao Yuan, more

Bulletin of Engineering Geology and the Environment > 2015 > 74 > 1 > 141-150

There are abundant mineral resources in Yunnan Province, which is located in the southwestern part of China, due to its unique geological conditions. The distribution of minerals is related to geological formations and past tectonic movements. The mineral resources extracted in Yunnan Province constitute 83 % of total mineral production in China. The local environment around the mines in Yunnan Province...

INFONA - science communication portal

Bulletin of Engineering Geology and the Environment

The usability of the Cerchar abrasivity index for the evaluation of the triaxial strength of Misis Fault Breccia

Slope stability assessment using both empirical and numerical methods: a case study

Stability analysis of the Lingshan gold mine tailings dam under conditions of a raised dam height

Risk assessments on active faults in Taiwan

The use of neural networks for CPT-based liquefaction screening

Identification and assessment of the erosion risk on the K'sob watershed (eastern Algeria)

Comparison of the landslides triggered by the 2013 Lushan earthquake with those triggered by the strong 2008 Wenchuan earthquake in areas with high seismic intensities

An investigation of the potential environmental contamination from the leachate of the Rasht waste disposal site in Iran

A comparative study of landslide susceptibility mapping using landslide susceptibility index and artificial neural networks in the Krios River and Krathis River catchments (northern Peloponnesus, Greece)

Joint set intensity estimation: comparison between investigation modes

Assessment of conventional French railway sub-structure: a case study

Accurate determination of the Taşkent (Konya, Turkey) landslide using a long-range terrestrial laser scanner

Role of granitic aggregates in the deterioration of a concrete dam

Time evolution of landslide damages to buildings: the case study of Lungro (Calabria, southern Italy)

Piezometric variations in the basaltic massif beneath the Itaipu hydroelectric plant (Brazil/Paraguay border): Right Buttress Dam

Deformation characteristics and failure mode of the Zhujiadian landslide in the Three Gorges Reservoir, China

Estimating the standard deviation of soil properties with limited samples through the Bayesian approach

Electrical resistivity use in the design of a drainage structure

Effects of the ratio of flaw size to specimen size on cracking behavior

Mining-induced geo-hazards with environmental protection measures in Yunnan, China: an overview

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