Rock Mechanics Studies During Continuous Miner Bases Coal Pillar Extraction in Indian Coalfields

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

Rock Mechanics Studies During Continuous Miner Bases Coal Pillar Extraction in Indian Coalfields

Popis výsledku v původním jazyce

Indian coal mining industry has introduced a number of fully mechanized depillaring operations/faces at depth of cover ranging from 60 m to 377 m. Nature of overlying strata of these depillaring faces varied widely; from highly laminated, weak and easilycaveable to massive, strong and difficult to cave. These mechanized depillaring operations are, generally, carried out at difficult site conditions but performance monitoring in field showed good production, productivity and safety results. Applicationof roof bolts as breaker line support for this technology worked well for moderate overlying roof strata but experienced difficulties for, both, extremely weak and strong/massive overlying roof strata. It is observed that the performance of a breaker line support at the goaf edge deteriorated with an increase in depth of cover of the depillaring face. Practice of a straight line of extraction (single row of pillars) during the mechanized depillaring below competent roof strata experience

Název v anglickém jazyce

Rock Mechanics Studies During Continuous Miner Bases Coal Pillar Extraction in Indian Coalfields

Popis výsledku anglicky

Indian coal mining industry has introduced a number of fully mechanized depillaring operations/faces at depth of cover ranging from 60 m to 377 m. Nature of overlying strata of these depillaring faces varied widely; from highly laminated, weak and easilycaveable to massive, strong and difficult to cave. These mechanized depillaring operations are, generally, carried out at difficult site conditions but performance monitoring in field showed good production, productivity and safety results. Applicationof roof bolts as breaker line support for this technology worked well for moderate overlying roof strata but experienced difficulties for, both, extremely weak and strong/massive overlying roof strata. It is observed that the performance of a breaker line support at the goaf edge deteriorated with an increase in depth of cover of the depillaring face. Practice of a straight line of extraction (single row of pillars) during the mechanized depillaring below competent roof strata experience

Druh

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

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

2015

Kód důvěrnosti údajů

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

Název periodika

Transactions

ISSN

0254-8003

e-ISSN

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Svazek periodika

111

Číslo periodika v rámci svazku

April 2014-March 2015

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

16

Strana od-do

89-104

Kód UT WoS článku

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EID výsledku v databázi Scopus

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