Počet záznamů: 1
Long-hole destress blasting for rockburst control during deep underground coal mining
- 1.
SYSNO ASEP 0394628 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Long-hole destress blasting for rockburst control during deep underground coal mining Tvůrce(i) Koníček, Petr (UGN-S) RID, ORCID
Souček, Kamil (UGN-S) RID, ORCID
Staš, Lubomír (UGN-S) RID, ORCID
Singh, R. (IN)Celkový počet autorů 4 Zdroj.dok. International Journal of Rock Mechanics and Mining Sciences. - : Elsevier - ISSN 1365-1609
-, č. 61 (2013), s. 141-153Poč.str. 13 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Ostrava - Karvina Coal basin ; longwall mining ; rockbursts ; destress blasting Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí CEP ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UGN-S - RVO:68145535 UT WOS 000320494600012 DOI 10.1016/j.ijrmms.2013.02.001 Anotace The Lazy Colliery in the Ostrava–Karvina Coalfield of the Upper Silesian Coal Basin adopted modern longwall technology for an underground extraction of coal seam No. 504. This coal seam is located at a cover depth of around 700 m. The seam thickness varied from 3.1 m to 5.0 m in the selected longwall panel. Two overlying coal seams, Nos. 512 and 530 experienced mining at average heights of 58 m and 75 m, respectively, from the planned working horizon of the seam No. 504. The proposed longwall panel was adversely situated below goaf edges of the workings in these two overlying extracted seams. An analysis of the inter-burden rock mass among these coal seams showed the presence of strong, massive strata of sandstones and conglomerates with uniaxial compressive strength values between 70 MPa and 120 MPa. The stress is measured at different mining stages by Compact Conical-ended Borehole Monitoring (CCBM). A simple laboratory test of the coal sample found a high value of the ratio of the elastic deformation to the total deformation (>0.8), indicating the energy-storing characteristic (prone to burst/bump) of the coal seam. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2014
Počet záznamů: 1