The determination of erosion thickness by back numerical analysis: case study of Badenian clays in the Carpathian Foredeep, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F16%3A00000266" target="_blank" >RIV/00025798:_____/16:00000266 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=-1109986310&_sort=r&_st=13&view=c&md5=6beb2340bf6a6be7a1752ed79d636cbb&searchtype=a" target="_blank" >http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=-1109986310&_sort=r&_st=13&view=c&md5=6beb2340bf6a6be7a1752ed79d636cbb&searchtype=a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enggeo.2016.09.010" target="_blank" >10.1016/j.enggeo.2016.09.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The determination of erosion thickness by back numerical analysis: case study of Badenian clays in the Carpathian Foredeep, Czech Republic

Popis výsledku v původním jazyce

The paper describes an application of the geotechnical numerical back analysis in estimating the thickness of eroded sedimentary overburden in shallow basinal sediments. The approach is based on the back-analysis of the coefficient of earth pressure at rest K0 and on estimating the unloading from the obtained K0 value. This approach is compared with the conventional methods represented by Baldwin–Butler's “compaction curves” and Casagrande's concept of “preconsolidation stress”. The results of these two commonly used methods are incorrect if the sedimentary profile is affected by “ageing” effects, such as cementation, secondary compression etc. The method is demonstrated on the Lower Miocene marine clay, often called “Tegl” which was deposited in the Carpathian Foredeep in the vicinity of Brno, Czech Republic. The numerical back analysis was applied to galleries and adits opened during site investigation of the Královo Pole Tunnels in Brno. The application of Baldwin–Butler's equation suggested the erosion thickness of 180–270 m and Casagrande's method of 100–800 m, while the numerical back analysis of 0–40 m.

Název v anglickém jazyce

The determination of erosion thickness by back numerical analysis: case study of Badenian clays in the Carpathian Foredeep, Czech Republic

Popis výsledku anglicky

The paper describes an application of the geotechnical numerical back analysis in estimating the thickness of eroded sedimentary overburden in shallow basinal sediments. The approach is based on the back-analysis of the coefficient of earth pressure at rest K0 and on estimating the unloading from the obtained K0 value. This approach is compared with the conventional methods represented by Baldwin–Butler's “compaction curves” and Casagrande's concept of “preconsolidation stress”. The results of these two commonly used methods are incorrect if the sedimentary profile is affected by “ageing” effects, such as cementation, secondary compression etc. The method is demonstrated on the Lower Miocene marine clay, often called “Tegl” which was deposited in the Carpathian Foredeep in the vicinity of Brno, Czech Republic. The numerical back analysis was applied to galleries and adits opened during site investigation of the Královo Pole Tunnels in Brno. The application of Baldwin–Butler's equation suggested the erosion thickness of 180–270 m and Casagrande's method of 100–800 m, while the numerical back analysis of 0–40 m.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

—

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Engineering Geology

ISSN

0013-7952

e-ISSN

—

Svazek periodika

214

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

50-59

Kód UT WoS článku

000389096000006

EID výsledku v databázi Scopus

—