Počet záznamů: 1
Rock Mechanics Studies During Continuous Miner Bases Coal Pillar Extraction in Indian Coalfields
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SYSNO ASEP 0447888 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Rock Mechanics Studies During Continuous Miner Bases Coal Pillar Extraction in Indian Coalfields Tvůrce(i) Ram, S. (IN)
Kumar, D. (IN)
Koníček, Petr (UGN-S) RID, ORCID
Singh, A. K. (IN)
Kumar, R. (IN)
Singh, A. Kr. (IN)
Singh, R. (IN)Celkový počet autorů 7 Zdroj.dok. Transactions - ISSN 0254-8003
Roč. 111, April 2014-March 2015 (2015), s. 89-104Poč.str. 16 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. IN - Indie Klíč. slova mining ; mechanized depillaring scenario ; rock mechanics Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí Institucionální podpora UGN-S - RVO:68145535 Anotace 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 easily caveable 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. Application of 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 experienced considerably large hanging area inside the goaf, which needs to be managed either by induced caving of the roof strata or through an increase in width of the excavation. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2016
Počet záznamů: 1