Observed and calculated gravity anomalies above a tunnel driven in clays - implication for errors in gravity interpretation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10174010" target="_blank" >RIV/00216208:11310/13:10174010 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.earthdoc.org/publication/publicationdetails/?publication=71385" target="_blank" >http://www.earthdoc.org/publication/publicationdetails/?publication=71385</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Observed and calculated gravity anomalies above a tunnel driven in clays - implication for errors in gravity interpretation

Popis výsledku v původním jazyce

The aim of this work was to evaluate the gravity effect of a deformation zone, which forms around subsurface cavities and to assess which method of density determination of soils in the surveyed area is optimal. We measured and modelled a gravity anomalyabove a tunnel excavated in stiff clays. Technical parameters of the tunnel were known. The shape of the deformation zone around the tunnel was determined by geotechnical modelling. Material parameters of clays necessary for the geotechnical model wereobtained from a measurement of borehole samples in a soil mechanics laboratory. For calculation of the gravity anomaly of the tunnel we used densities of clays derived from laboratory measurements of borehole samples. However, the fit between observed and calculated gravity data was not accurate in this case. The reason was probably that the volume and water content in the borehole clay samples changed after their removal from the depth. A better fit was obtained when we used densities d

Název v anglickém jazyce

Observed and calculated gravity anomalies above a tunnel driven in clays - implication for errors in gravity interpretation

Popis výsledku anglicky

The aim of this work was to evaluate the gravity effect of a deformation zone, which forms around subsurface cavities and to assess which method of density determination of soils in the surveyed area is optimal. We measured and modelled a gravity anomalyabove a tunnel excavated in stiff clays. Technical parameters of the tunnel were known. The shape of the deformation zone around the tunnel was determined by geotechnical modelling. Material parameters of clays necessary for the geotechnical model wereobtained from a measurement of borehole samples in a soil mechanics laboratory. For calculation of the gravity anomaly of the tunnel we used densities of clays derived from laboratory measurements of borehole samples. However, the fit between observed and calculated gravity data was not accurate in this case. The reason was probably that the volume and water content in the borehole clay samples changed after their removal from the depth. A better fit was obtained when we used densities d

Druh

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

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Near Surface Geophysics

ISSN

1569-4445

e-ISSN

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Svazek periodika

11

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

569-578

Kód UT WoS článku

000325784100009

EID výsledku v databázi Scopus

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