Stability of Moraine and Rock Slopes at Glacial Lakes—Two Case Studies in the Cordillera Blanca

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F24%3A00599935" target="_blank" >RIV/67985891:_____/24:00599935 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/24:10169061

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-031-58245-5_9" target="_blank" >http://dx.doi.org/10.1007/978-3-031-58245-5_9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-58245-5_9" target="_blank" >10.1007/978-3-031-58245-5_9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stability of Moraine and Rock Slopes at Glacial Lakes—Two Case Studies in the Cordillera Blanca

Popis výsledku v původním jazyce

Two presented cases of slope-specific stability assessment illustrate an approach of low-impact investigation techniques, which at the same time allow obtaining necessary data for reliable and realistic slope stability calculations. The applied methods combine field geomorphological, structural and engineering geological investigations with basic laboratory rock and soil tests to constrain the strength properties of the soil, rock discontinuities and rock mass forming landslide material and determining its initiation. Careful observations of the slope’s natural conditions served as input data and along with available historical information about sliding frequencies were used to validate the results of the slope stability calculations. For the investigated cases, they show that glacier retreat and thinning were necessary, but not sufficient conditions for landslide initiation in both, a moraine and a rock slope. Other factors need to contribute to low slope stability and material strength to allow failure initiation. These are water saturation of both, soils and rocks within a slope, seismicity, favorable slope dips and structural conditions, and long-term rock strength deterioration, which is probably one of the factors resulting in delayed rock slope response to deglaciation. At higher altitudes, climate-induced permafrost degradation has the potential significantly contribute to long-term slope destabilization.

Název v anglickém jazyce

Stability of Moraine and Rock Slopes at Glacial Lakes—Two Case Studies in the Cordillera Blanca

Popis výsledku anglicky

Two presented cases of slope-specific stability assessment illustrate an approach of low-impact investigation techniques, which at the same time allow obtaining necessary data for reliable and realistic slope stability calculations. The applied methods combine field geomorphological, structural and engineering geological investigations with basic laboratory rock and soil tests to constrain the strength properties of the soil, rock discontinuities and rock mass forming landslide material and determining its initiation. Careful observations of the slope’s natural conditions served as input data and along with available historical information about sliding frequencies were used to validate the results of the slope stability calculations. For the investigated cases, they show that glacier retreat and thinning were necessary, but not sufficient conditions for landslide initiation in both, a moraine and a rock slope. Other factors need to contribute to low slope stability and material strength to allow failure initiation. These are water saturation of both, soils and rocks within a slope, seismicity, favorable slope dips and structural conditions, and long-term rock strength deterioration, which is probably one of the factors resulting in delayed rock slope response to deglaciation. At higher altitudes, climate-induced permafrost degradation has the potential significantly contribute to long-term slope destabilization.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

10508 - Physical geography

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Geoenvironmental Changes in the Cordillera Blanca, Peru

ISBN

978-3-031-58244-8

Počet stran výsledku

22

Strana od-do

147-168

Počet stran knihy

299

Název nakladatele

Springer

Místo vydání

Cham

Kód UT WoS kapitoly

—