... load. Due to the comprehensive load, broken particles form in the fractures and play a role of proppant to prevent fractures from complete closure. Even if the dislocation of fracture surfaces disappears and re-aligns to each other, plastic deformation will still prop up aperture of the fracture. Based...

... drilling Upstream Oil & Gas strength rotary drilling uniaxial compressive strength plastic deformation tunnel rock strength penetration rate Drilling Rate Index thrust rock property drillability brittleness rotary-percussive drilling mechanical property compressive strength Drilling...

... are the ring net, cable and the energy absorbers. The goal is to initiate a very low degree of plastic deformation in the dissipating devices. 1 Test and Comparison with Faro Simulation This paper focuses on a new innovative rockfall protection fence, tested and designed according to the ETAG027 criteria...

... and prevention con- trol (Chen, S. J. et al. 2007, Zhang, X.Y. et al. 2007).At present, scholars have put forward various rock burst indexes, such as elastic energy index, impact energy index, the maximum plastic deformation velocity and brittleness index etc (Pan, Y. S. et al. 2010). Elastic energy index...

... consideration plastic deformation Engineering criterion simulator coupling Fault Zone equation Rock Mechanics for Resources, Energy and Environment Kwas´niewski & ydz ba (eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00080-3 Analysis of the hydromechanical behavior of fault zones...

... and discrete approach is proposed. Fabric tensor is used to characterize the inherent orientation-dependent properties of materials. Macroscopic plastic deformation and damage are considered as the result of frictional sliding along weakness sliding planes and growth of these ones. The coupling phenomenon...