Designing of Anchoring Reinforcement in Underground Workings Using DDFPM Method
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Petr Janas,
Richard Snuparek,
Martin Krejsa,
Vlastimil Krejsa
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| Transactions of the VSB - Technical University of Ostrava, Civil Engineering Series |
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2009, Volume 9, Issue 1, Pages 157-166
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Doi: Not indexed
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The anchoring reinforcement (roof bolting) ranks currently among important reinforcing solutions available in the mining industry and underground engineering. The reinforcement is sized on the basis of various theoretical assumptions and empirical pieces of knowledge. Generally it is assumed that the input values are clearly deterministic. This is valid for both the geotechnical conditions under which the anchors will be applied as well as for properties of the anchors that are influenced also by installation procedures. But most data used as inputs in various anchor sizing methods are random. Recently, applied Direct Determined Fully-Probabilistic Method (DDFPM) has started developing for the assessment of the reliability of building constructions. DDFPM is also applicable for the design of anchors. An assumption for the application is a sufficient database of random quantities relating to the environment where the anchors will be installed, properties of the anchors and anchoring technologies, anchor design computational models and suitable and efficient tools for the probabilistic design of the anchoring reinforcement.
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