Cable bolt bearing capacity - an in situ parametric study

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cable bolt bearing capacity - an in situ parametric study

Popis výsledku v původním jazyce

The study presents the behaviour of CRR system during pull out test which is usually used in the carboniferous rock mass in the Czech part of the Upper Silesian Coal Basin. Series of 28 pull out tests were performed on 3 m long cable bolts with various combinations of borehole diameters and bonding lengths for understanding this behaviour. Boreholes were drilled into a solid rock mass consisting of fine-grained sandstone to guarantee similar conditions during pull out tests. Video inspection and measurement of boreholes diameters were performed to determine their quality and real diameters. Three characteristics were observed from pull-out tests results: ultimate pullout load, displacement of the end of bolt and system stiffness. Numerical modelling byFEM was used to determine stiffness of the CRR system for variable bolt/borehole ratios and bonding lengths each under constant load. Linear elasto-plastic model and mohr-coulomb model were used for cable and resin-rock respectively. The

Název v anglickém jazyce

Cable bolt bearing capacity - an in situ parametric study

Popis výsledku anglicky

The study presents the behaviour of CRR system during pull out test which is usually used in the carboniferous rock mass in the Czech part of the Upper Silesian Coal Basin. Series of 28 pull out tests were performed on 3 m long cable bolts with various combinations of borehole diameters and bonding lengths for understanding this behaviour. Boreholes were drilled into a solid rock mass consisting of fine-grained sandstone to guarantee similar conditions during pull out tests. Video inspection and measurement of boreholes diameters were performed to determine their quality and real diameters. Three characteristics were observed from pull-out tests results: ultimate pullout load, displacement of the end of bolt and system stiffness. Numerical modelling byFEM was used to determine stiffness of the CRR system for variable bolt/borehole ratios and bonding lengths each under constant load. Linear elasto-plastic model and mohr-coulomb model were used for cable and resin-rock respectively. The

Druh

D - Stať ve sborníku

CEP obor

JQ - Strojní zařízení a nástroje

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

ISRM Congress 2015 Proceedings - International Symposium on Rock Mechanics /13./

ISBN

978-1-926872-25-4

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

ISRM

Místo vydání

Montreal, Quebec

Místo konání akce

Montreal, Quebec

Datum konání akce

10. 5. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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