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Numerical analysis of the interaction between rockbolts and rock mass for coal mine drifts in VietnamLe Van, Cong 19 December 2008 (has links)
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.
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Die Bedeutung des Kollagens für die Regeneration der Rotatorenmanschette: Histologische und immunhistologische Untersuchung der Verteilung der Kollagene Typ I, Typ II und Typ III nach single- und double-row-Naht-Anker-Rekonstruktion / The importance of collagen for rotator cuff regeneration: Histological and immunohistochemical study of the distribution of collagens type I, type II and type III after single-and double-row suture anchor reconstructionPosmyk, Andrea 15 March 2011 (has links)
No description available.
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