... compression test were carried out by using serve-control rock mechanics test system, through the stress and strain curve and failure characters of rock specimens, in order to analyze the influence of strength and deformation with different fissure angle and length under different confining pressures...

... continuous deformation field of rock material is showed microscopically in the process of damage by technology of 3D Digital Image Correlation under biaxial stress state. Based on characteristics of macroscopic deformation and micro-mechanical damage, the failure format and regulation of Jinping marble...

... Engineering boundary condition buffer waste management axial stress coefficient repository flexible-swelling test specimen saturation underground repository infiltration equilibrium stiffness coefficient bentonite University load ring deformation oedometer cell void ratio...

...) The actual data used for recognition should be mul- tiple. On one hand, different types of data should be adapted and merged into the united fitness func- tion (shown as Eq. 2). On the other hand, these valid data, which represent the typically spatial and temporal characteristics of deformation and damage...

... hydrostatic and shear loading; (2) follows the associated flow rule for viscoplastic deformation; (3) adopts a creep modulus that varies with stress ratios; and (4) considers the primary and secondary creep behaviors of rock. This model requires 13 material parameters, comprising 3 for elasticity, 7...

... Abstract Taking the carbonaceous phyllite as investigative subject, which is the weak layer widely distributed in Yunfu pyrite, Guangdong province, the deformation characteristics and strength properties of the carbonaceous phyllite rock mass are analyzed through laboratory uniaxial...

...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Experimental study on deformation and strength properties of microfissured rock Ronggui Deng & Zhibin Zhong School of Civil Engineering, Southwest...

... rock sample stress-strain curve deformation Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Acoustic emission behaviors of the Beishan granite under uniaxial and triaxial compression conditions...

... and reloading were observed. The linear character of the stress-strain response during reloading and unloading is more apparent at an increased confining pressure. Confining pressure reduces the difference of deformation modulus between unloading and reloading. The constitutive relationship for loading...

... and controling conditions are simplified. Based on the principles of discrete element method for calculating the rock velocity, the sliding velocities of landslide masses in various zones at different moments are acquiried by means of the statistical analysis. Taking the deformation and failure mechanism...

... Abstract Muzhailing railway tunnel is excavated mainly in fault zones, carbonaceous slate and sandstone using the drilling-blasting method. Geotechnical problems encountered in the tunnel during construction, such as large squeezing deformation with long duration and collapse of arch crown...

... rock bolt hydroelectric project Fracture Zone bhasin deformation instability construction displacement Bhutan powerhouse rock mass support system proceedings Himalaya machine hall Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor...

... applicable to tunnel sections far from the advanc- ing face. Curran et al. (2003) presented that in the numerical simulation of a tunnel, if the tunnel is first excavated and a passive support system installed there- after, the support system will carry no loads. This is because all deformations would have...

...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Coupling relation between damage-induced permeability evolution and accelerated creep deformation of volcanic breccias R.B. Wang & W.Y. Xu...

... production blast holes so as to find borehole stability problems. A total of 298 blast holes were filmed. There were eight types of stability problems identified in the blast holes. These are shear zone, loose rock, cave, crack, deformation, stone jammed, spalling and rock breakage. Among these problems...

... Abstract This manuscript established an innovative approach for recognizing deformation patterns of a built tunnel, which benefits for diagnosing possible causes for lining anomalies. Demonstrating with a circular tunnel, the deformation of a tunnel lining is first assumed to be composition...

... University, Wuhan, Hubei, China Xingli Lu State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei, China ABSTRACT: Due to the stress redistribution after excavation, the pre-existent joints or cracks will deform...

...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Determination of the deformation behaviour of salt rock by evaluation of convergence measurements in shafts Qianyun Wang & Jürgen Hesser Federal...

... of surrounding rock stress and deformation in test roadways with different coal pillar width (10 m & 20 m) before and after the mining-induced influence by the workface. Combination of the above theoretical calculations, simulation and underground test results are considered to determine a reasonable width scope...

... in the problem domain is created by linking the covers together by the weight function. Compared with those methods such as the analytical method, finite element and discontinuous deformation analysis, NMM can solve complex problems in comprehensive aspects. Since NMM was proposed, a number of scholars improve...