The thesis describes the application of anchors in mining and tunneling and gives an up-to-date overview about anchor types, design principles and the interaction mechanisms between anchors and rockmass. A constitutive model was developed, implemented and tested for the 2- and 3-dimensional numerical codes FLAC and FLAC3D to simulate non-linear anchor behaviour including unloading and reloading. The interaction between rockbolts and rockmass was studied in detail via numerical simulations for 5 Vietnamese coal mines. An extended version of the so-called c-Φ reduction method and a new introduced reinforcement factor were applied to quantify the effect of bolting. Mine specific and generalised relations were deduced to quantify the influence of anchor length and distance between anchors on the effect of bolting.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:105-5323241 |
| Date | 05 August 2009 |
| Creators | Le Van, Cong |
| Contributors | TU Bergakademie Freiberg, Geowissenschaften, Geotechnik und Bergbau, Prof. Dr.-Ing. habil. Heinz Konietzky, Prof. Dr.-Ing. habil. Heinz Konietzky, Prof. Dr.-Ing. Per Nicolai Martens, Prof. Dr.-Ing. Matthias Reich |
| Publisher | Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola" |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | doc-type:doctoralThesis |
| Format | application/pdf |
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