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Rockbolts as reinforcing elements under dynamic impact of rokbursts
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SYSNO ASEP 0331601 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Rockbolts as reinforcing elements under dynamic impact of rokbursts Author(s) Horyl, P. (CZ)
Šňupárek, Richard (UGN-S) RIDNumber of authors 2 Source Title Proceedings of the International Symposium SINOROCK 2009. - Hongkong : The University of Hongkong, 2009 - ISBN 978-962-8014-17-0 Pages s. 1-4 Number of pages 4 s. Action International Symposium SINOROCK 2009 Event date 19.05.2009-22.05.2009 VEvent location Hongkong Country HK - Hong Kong Event type WRD Language eng - English Country HK - Hong Kong Keywords break-through support ; rockburst ; strenghtening Subject RIV DH - Mining, incl. Coal Mining R&D Projects GA105/07/1265 GA ČR - Czech Science Foundation (CSF) AACBU44-06 GA ČBÚ - Czech Mining Office Board (ČBÚ) CEZ AV0Z30860518 - UGN-S (2005-2011) Annotation Due to strong impacts of rockbursts in Ostrava – Karvina coalfield which affect especially roadways and cross-cuts of longwall panels it is necessary to strenghten standard steel breakthroughs support. Using of reinforcing complementary bolts seems to be very effective. Different varieties of a number and location of such rockbolts have been analysed and compared from the viewepoint of the stability under dynamic events on the base of 3D mathematic modelling. The instrument of computer modelling has been FEM applied by ANSYS code. It deals with shape and nature of deformation of steel support, strain and deformation of reinforcing bolts, critical energy by which a permanent strain is caused, influence of interaction of adjacent rock on the above mentioned characterisics. Recommendation for number and location of reinforcing complementary bolts is also contained. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2010
Number of the records: 1