ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
On the basis of suitable arrangement for the special stress surrounding and parametersselection, Realistic Failure Process Analysis 2-D (RFPA2D) numerical simulation of extra-thick coalseams’ displacement and failure is carried out. It’s proved that the numerical simulation results areconsistent with the in-sit measurement results of top coal’s advance supporting stress and deep-holedisplacement. So application of RFPA2D in sub-level caving mining extra-thick coal seams isreliable. It’s also proved that application of RFPA2D in sub-level caving mining can do great help tostudy the nature of top coal’s displacement, fragmentation and failure process of extra-thick coalseams. As the top coal’s displacement and failure situation under certain circumstance can beforecasted by RFPA2D numerical simulation, the most suitable top coal thickness under certaincircumstance can be predicted by RFPA2D numerical simulation test, which can do great benefit toextra-thick coal seams’ safe and high efficient mining
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.575-578.1246.pdf
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