Spatio-temporal analysis of the influence of mining on the surface ? A case study from the Ostrava-Karviná Coal Field

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

Spatio-temporal analysis of the influence of mining on the surface ? A case study from the Ostrava-Karviná Coal Field

Popis výsledku v původním jazyce

If coal seams are mined by longwall mining, the original stress balance in the rock mass is changed. The stress increases around the mined-out area.As a result, increased stress causes compression around the excavation. The compression around the excavation is shown by exact measurable subsidence. The impact of mining can be theoretically determined by a limiting impact angle. The paper deals with the assessment of mining in the ninth and seventh blocks at Karvina Mine Lazy Plant and its influence on the surface. The process of failure of the mining seam?s rigid roof in both areas will be explained. On the basis of spatio-temporal relationships of real surface subsidence, mined longwalls, and geomechanical events, the character of overlying rock deformations can be evaluated. The character of rigid overlying strata will be evaluated by means of an inflexibility coefficient which has the advantage of including the main factors of influence: the thickness of the seam and the rigidity and

Název v anglickém jazyce

Spatio-temporal analysis of the influence of mining on the surface ? A case study from the Ostrava-Karviná Coal Field

Popis výsledku anglicky

If coal seams are mined by longwall mining, the original stress balance in the rock mass is changed. The stress increases around the mined-out area.As a result, increased stress causes compression around the excavation. The compression around the excavation is shown by exact measurable subsidence. The impact of mining can be theoretically determined by a limiting impact angle. The paper deals with the assessment of mining in the ninth and seventh blocks at Karvina Mine Lazy Plant and its influence on the surface. The process of failure of the mining seam?s rigid roof in both areas will be explained. On the basis of spatio-temporal relationships of real surface subsidence, mined longwalls, and geomechanical events, the character of overlying rock deformations can be evaluated. The character of rigid overlying strata will be evaluated by means of an inflexibility coefficient which has the advantage of including the main factors of influence: the thickness of the seam and the rigidity and

Druh

D - Stať ve sborníku

CEP obor

DH - Báňský průmysl včetně těžby a zpracování uhlí

OECD FORD obor

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Projekt

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Návaznosti

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 statě ve sborníku

EUROCK 2013 - Rock Mechanics for Resources, Energy and Environment

ISBN

978-1-138-00080-3

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

739-743

Název nakladatele

CRC Press Taylor & Francis Group, Balkema

Místo vydání

London

Místo konání akce

Wroclaw

Datum konání akce

23. 9. 2013

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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