Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Brief Comments on “Unloading Rock Mechanics” and Engineering Applications
Since rock masses are not a true continuous, homogeneous, isotropic and linear-elastic (CHILE) continuum, the loading and unloading behaviors differ greatly from each other. Professor Ha Qiulin and his co-workers have demonstrated that strength and deformational characteristics, initial rock stresses, scale effects, creep, deformation and fracture patterns are quite different and stress path dependence is particularly emphasized. As engineering unloading of the rock mass is essentially of a dynamic nature by excavation, we will first discuss the excavation process and related stabilization techniques. For the complex stress and deformation conditions around the excavated boundaries, it seems rational to define an excavation disturbed zone (EDZ) as in the last decades. In tunnel excavation, temperature and ventilation effects should be also taken into account. Space-and-time dependence on tunnel behaviors is important. Finally, further research topics are discussed.
Brief Comments on “Unloading Rock Mechanics” and Engineering Applications
Since rock masses are not a true continuous, homogeneous, isotropic and linear-elastic (CHILE) continuum, the loading and unloading behaviors differ greatly from each other. Professor Ha Qiulin and his co-workers have demonstrated that strength and deformational characteristics, initial rock stresses, scale effects, creep, deformation and fracture patterns are quite different and stress path dependence is particularly emphasized. As engineering unloading of the rock mass is essentially of a dynamic nature by excavation, we will first discuss the excavation process and related stabilization techniques. For the complex stress and deformation conditions around the excavated boundaries, it seems rational to define an excavation disturbed zone (EDZ) as in the last decades. In tunnel excavation, temperature and ventilation effects should be also taken into account. Space-and-time dependence on tunnel behaviors is important. Finally, further research topics are discussed.
Brief Comments on “Unloading Rock Mechanics” and Engineering Applications
Applied Mechanics and Materials ; 256-259 ; 211-214
13.12.2012
4 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Brief Comments on “Unloading Rock Mechanics” and Engineering Applications
| Tema Archiv | 2012
Brief Comments on ``Unloading Rock Mechanics'' and Engineering Applications
| British Library Conference Proceedings | 2012
Rock mechanics and rock engineering
UB Braunschweig | 1.1969 -
Rock mechanics and rock engineering
UB Braunschweig | 16.1983 -