Observation of the rock slope thermal regime, coupled with crackmeter stability monitoring: Initial results from three different sites in Czechia (central Europe)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F21%3A00545911" target="_blank" >RIV/67985891:_____/21:00545911 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10431167

Výsledek na webu

<a href="https://gi.copernicus.org/articles/10/203/2021/" target="_blank" >https://gi.copernicus.org/articles/10/203/2021/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/gi-10-203-2021" target="_blank" >10.5194/gi-10-203-2021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Observation of the rock slope thermal regime, coupled with crackmeter stability monitoring: Initial results from three different sites in Czechia (central Europe)

Popis výsledku v původním jazyce

This paper describes a newly designed, experimental, and affordable rock slope monitoring system. This system is being used to monitor three rock slopes in Czechia for a period of up to 2 years. The instrumented rock slopes have different lithology (sandstone, limestone, and granite), aspect, and structural and mechanical properties. Induction crackmeters monitor the dynamic of joints, which separate unstable rock blocks from the rock face. This setup works with a repeatability of measurements of 0.05g mm. External destabilising factors (air temperature, precipitation, incoming and outgoing radiation, etc.) are measured by a weather station placed directly within the rock slope. Thermal behaviour in the rock slope surface zone is monitored using a compound temperature probe, placed inside a 3g m deep subhorizontal borehole, which is insulated from external air temperature. Additionally, one thermocouple is placed directly on the rock slope surface. From the time series measured to date (the longest since autumn 2018), we are able to distinguish differences between the annual and diurnal temperature cycles of the monitored sites. From the first data, a greater annual joint dynamic is measured in the case of larger blocks, however, smaller blocks are more responsive to short-Term diurnal temperature cycles. Differences in the thermal regime between the sites are also recognisable and are caused mainly by different slope aspect, rock mass thermal conductivity, and colour. These differences will be explained by the statistical analysis of longer time series in the future.

Název v anglickém jazyce

Observation of the rock slope thermal regime, coupled with crackmeter stability monitoring: Initial results from three different sites in Czechia (central Europe)

Popis výsledku anglicky

This paper describes a newly designed, experimental, and affordable rock slope monitoring system. This system is being used to monitor three rock slopes in Czechia for a period of up to 2 years. The instrumented rock slopes have different lithology (sandstone, limestone, and granite), aspect, and structural and mechanical properties. Induction crackmeters monitor the dynamic of joints, which separate unstable rock blocks from the rock face. This setup works with a repeatability of measurements of 0.05g mm. External destabilising factors (air temperature, precipitation, incoming and outgoing radiation, etc.) are measured by a weather station placed directly within the rock slope. Thermal behaviour in the rock slope surface zone is monitored using a compound temperature probe, placed inside a 3g m deep subhorizontal borehole, which is insulated from external air temperature. Additionally, one thermocouple is placed directly on the rock slope surface. From the time series measured to date (the longest since autumn 2018), we are able to distinguish differences between the annual and diurnal temperature cycles of the monitored sites. From the first data, a greater annual joint dynamic is measured in the case of larger blocks, however, smaller blocks are more responsive to short-Term diurnal temperature cycles. Differences in the thermal regime between the sites are also recognisable and are caused mainly by different slope aspect, rock mass thermal conductivity, and colour. These differences will be explained by the statistical analysis of longer time series in the future.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/SS02030023" target="_blank" >SS02030023: Horninové prostředí a suroviny</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Geoscientific Instrumentation, Methods and Data Systems

ISSN

2193-0856

e-ISSN

2193-0864

Svazek periodika

10

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

203-218

Kód UT WoS článku

000694016300001

EID výsledku v databázi Scopus

2-s2.0-85114648491