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Grain size distribution of soils within the Cordillera Blanca, Peru: An indicator of basic mechanical properties for slope stability evaluation

SYSNO ASEP	0434609
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Grain size distribution of soils within the Cordillera Blanca, Peru: An indicator of basic mechanical properties for slope stability evaluation
Author(s)	Novotný, J. (CZ) Klimeš, Jan (USMH-B)_{RID, ORCID, SAI}
Source Title	Journal of Mountain Science. - : Science Press - ISSN 1672-6316 Roč. 11, č. 3 (2014), s. 563-577
Number of pages	15 s.
Publication form	Print - P
Language	eng - English
Country	CN - China
Keywords	moraines ; grain size distribution ; shear strength ; hydraulic conductivity ; Cordillera Blanca
Subject RIV	DE - Earth Magnetism, Geodesy, Geography
R&D Projects	GAP209/11/1000 GA ČR - Czech Science Foundation (CSF)
Institutional support	USMH-B - RVO:67985891
UT WOS	000336319100001
EID SCOPUS	84900804747
DOI	10.1007/s11629-013-2836-9
Annotation	This paper presents results of a study on the mechanical properties of sandy and gravely soils within the Cordillera Blanca, Peru. The soils were divided into groups according to their origin (glacial, fluvial, or debris flow). The grain size distribution of forty three soil samples was used to classify the soils according to the scheme of the Unified Soil Classification System (USCS). These distributions have then been used to estimate shear strength and hydraulic properties of the soils. There are clear differences between the soils which reflect their divergent origins. The glacial soils normally fit within one of two distinctive groups according to the proportion of fines (Group A, 7%-21.5%; Group B, 21%-65%). The estimation of shear strength at constant volume friction angle and peak shear strength of the glacial sediments with low content of fines was made using published data relating to the measured shear strength characteristics of soils with similar origins and grain size distributions. The estimated values were supported by measurements of the angle of repose taken from fourteen samples from two moraines and by shear tests on samples from one locality. The results of the grain size distribution were also used to estimate the average hydraulic conductivity using the empirical Hazen formula which results were verified by field infiltration tests at two localities.
Workplace	Institute of Rock Structure and Mechanics
Contact	Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216
Year of Publishing	2015

Number of the records: 1