Laboratory determination of direct shear strength of granitoid rocks; examples from the host rock of the nuclear waste storage facility of Bátaapáti (Hungary)

Buocz, Ildikó; Rozgonyi-Boissinot, Nikoletta; Görög, Péter; Török, Ákos

doi:10.1556/ceugeol.53.2010.4.4

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…The results of the point load test performed on the rock samples (Table 2) show a mean value of UCS and UTS of 161.17 and 5.37 Mpa, respectively, falling within medium-high values according to literature (Hoek and Brown 1980;Hoek et al 1992). The results of the tilt test report an average value of basic friction angle φ b of 31°, well matching the values of moderately rough granitoid rocks (Buocz et al 2010;Alejano et al 2012). Regarding the soil samples, a classification was carried out using the USCS (Unified Soil Classification System) system.…”

Section: Geotechnical Analysissupporting

confidence: 74%

Integrated approach for landslide hazard assessment in the High City of Antananarivo, Madagascar (UNESCO tentative site)

et al. 2022

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The High City of Antananarivo is one of the most important cultural heritage sites of Madagascar, on the UNESCO Tentative List since 2016. Built on the hilltop of the Analamanga Hill, a granite ridge overlooking the Ikopa River valley, it is renowned for its baroque-style palaces, such as the Rova royal complex, and neo-Gothic cathedrals dating back to the nineteenth century. During the winter of 2015, the twin cyclones Bansi and Chedza hit the urban area of Antananarivo, triggering floods and shallow landslides, as well as causing thousands of evacuees and many casualties. Between 2018 and 2019 several rockfalls occurred from the rock cliffs of the Analamanga hills, destroying housings and killing over 30 people. Both events showed that landslides can pose a high risk to the safety of the inhabitants, the infrastructure, and the cultural heritage of the High City. To assess the landslide hazard in the Analamanga Hill area, an integrated approach was adopted by means of the following actions: (i) creation of a multitemporal detailed scale landslide map; (ii) geotechnical characterization of the involved materials; (iii) analysis of landslide susceptibility in soils/loose deposits; (iv) runout analysis of debris flows channeling within large creek gullies; (v) landslide kinematic analysis of the rockmass; (vi) simulation of rockfall trajectories; (vii) analysis of rainfall data. The results show that the main factors affecting landslides are slope, lithology, creek-gully erosion, and anthropization, while most of the landslide events are clearly triggered by heavy rainfall. The landslide-prone areas (the phenomena include shallow landslides, rock falls, and debris flows) are located primarily along the cliff bounding the western hill slope, the southeastern sector (where abandoned quarries form large slope cuts), and subordinately in the steep creek catchment just east of the Rova. The thematic maps produced represent fundamental land use management tools to be used in Geo Disaster Risk Reduction (GDRR) by scientists, practitioners and the decision-makers involved in the High City protection and conservation. The study conducted represents an important contribution for improving the knowledge on landslide processes in an area with limited data such as Madagascar, and may be reproduced in cultural heritage sites characterized by similar geomorphological and urban scenarios.

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Section: Geotechnical Analysissupporting

confidence: 74%

Integrated approach for landslide hazard assessment in the High City of Antananarivo, Madagascar (UNESCO tentative site)

et al. 2022

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“…The shear strength of the investigated granitic rocks was investigated by Buocz et al (2010). These results were used for block analysis.…”

Section: Introductionmentioning

confidence: 99%

Geotechnical rock mass documentation in the Bátaapáti radioactive waste repository

Deák¹,

Kovács²,

Vásárhelyi³

2014

Central European Geology

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The geologic, geotechnical and rock mechanical background of the area, which includes an underground cavern system, is very complex. Initially, to describe the rock mass properties, the RMR and Q systems were used, while the rock support system was based solely on the Q system. Later, during construction of the repository chambers, the GSI system was also introduced in addition to the above-mentioned rock classification methods. The correlation and usage of these three different rock mass classification systems were investigated.Special methods were used to obtain more accurate tunnel mapping and documentation, which is based on photogrammetry and photo analyzer software.According to the results, the correlation between the RMR and Q values is independent of the rock type; basically, the same equation can be used for all (differences between experimental error). The GSI intervals also closely follows the same trend as the results of the other two methods.

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Degradation Processes in Civil Engineering Slopes in Soft Rocks

Miščević

Cvitanović

Vlastelica

2019

Soft Rock Mechanics and Engineering

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Laboratory determination of direct shear strength of granitoid rocks; examples from the host rock of the nuclear waste storage facility of Bátaapáti (Hungary)

Cited by 8 publications

References 3 publications

Integrated approach for landslide hazard assessment in the High City of Antananarivo, Madagascar (UNESCO tentative site)

Integrated approach for landslide hazard assessment in the High City of Antananarivo, Madagascar (UNESCO tentative site)

Geotechnical rock mass documentation in the Bátaapáti radioactive waste repository

Degradation Processes in Civil Engineering Slopes in Soft Rocks

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