... as normal deformation of free surfaces have a great impact on rock failure. Upstream Oil & Gas biaxial compressive failure failure crack compression test Reservoir Characterization displacement failure mode loading path University strength marble lateral pressure experimental...

... shear experiment funding organisation support Switzerland Reservoir Characterization Upstream Oil & Gas ijrmm special issue decovalex 2015 displacement rock mass fracture particle barrier system biosphere rock fracture repository Rock Mech evolution Rock Characterisation...

..., BEM, DEM, DDA and meshless method (Tang, 1997; Matsuda et al., 2002; Miao et al., 2010). But the former needs a huge amount of computer resources, and can't widely used in practical engineering. hydraulic fracturing displacement crack surface Reservoir Characterization Upstream Oil...

... conditions, such as opening, closing, faulting or shearing, with large or small relative displacements. The complexity in the surface topography makes understanding and quantitative representation of the physical-chemical behavior and rock fracture properties difficult issues. fluid modeling...

.... The monitoring data shows the ratio between the maximum cumulative horizontal and vertical displacements reaches to 4 to 10, which shows an anisotropic deformation. Meanwhile, serial hydraulic fracture stress tests we conducted in tunnel indicate that coefficient of lateral pressure k approaches to 3, compared...

... 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...

... and elastic-perfectly-plastic one for very poor quality soft rock masses. According to the survey, a great deal of rock masses belongs to the average classification. The extent of the plastic zone and free face displacement are important indexes for the design of the tunnel. Those investigations are commonly...

... (Mei, 2010). The test chooses the sand, gpy- sum and barite as the similar materials, the simailar ratio of materials are shown in Table 2. 3.2 Layout of observation points Displacement observation: Surface displacement was measured by strain displacement sensor and selected automaticlly by data...

... on artificial block-in-matrix rocks. Tunneling in weak rock mass is often accompanied by large displacements, hence an intended issue was to investigate the behavior of BIM-rocks exposed to large strains. Lindquist (1994) provided a comprehensive study of triaxial tests on artificial BIM-rocks. However, being...

.... The stress release process is realized using a numerical software UDEC, which is validated by the closed-form solution of a circular tunnel. The stability of a cavern in rockmass is analyzed based on the convergence-confinement method using UDEC. The displacement around the cavern is investigated...

.... The denomination follows the complexity and sim- ilarity of the displacement patterns. Among all, the displacemental profiles for mode 2a-1 and 2a-2, 2b-1 and 2b-2, 3a-1 and 3a-2, 3b-1 and 3b-2, 4a-1 and 4a-2, 4b-1 and 4b-2 can match completely via rotating with respect to the center. 3 VALIDATION...

...- ventional), the excavation sequence (full face, top heading, round length, etc support or pre-support and other additional measures. The excavation and support methods have to be established in a way that the system behaviour meets the project specific requirements (RQ) such as limited displacements...

... the displacement and state of elements to anlalyze the surrounding rock stability. When the rock belongs to A, the max displacement appears on the side cave sidewall. The displacement is about 1 mm. The displacement of floor resilience is about 0.9 mm. The maximum displacement of inner sidewall is about 0.5 mm...

... formations on the caprock integrity (Rutqvist et al. 2010; Morris et al. 2011; Rutqvist 2012), this study is focused on such influence on potential caprock fracturing. Upstream Oil & Gas lower caprock hydraulic fracturing displacement brine aquifer fluid pressure Reservoir Characterization...

... displacements of the convergence measuring point. This practice enables the identification of special geological situations with their influences on deformation size and deformation direction. 1 INTRODUCTION Shafts are the shortest connection between the surface and deep seated mineral deposits and underground...

..., the viscous- type damping is adopted to absorb the kinetic energy caused by the oscillation of system. The equilibrium equations containing damping term are derived by minimizing the total potential energy. In order to improve the calculation efficiencies of NMM, convergence criterion including displacement...

... both the fault dips and fault locations relative to the open pit slope to be really critical for the open pit slope stability. The relationship of the induced plastic zones, crest displacements varying with these fault parameters was established. The distribution of plastic zone and displacement...

... makes use of optical fibers as the light propagation medium, it could keep on visualizing the displacement of measuring points even if its front part is cut as needed during excavation. The paper presents some laboratory experiments to demonstrate the applicability of this scheme. By doing...

... mitigation measures used in the design phase are presented to produce reliable design solutions, including a combined procedure used for assessing geological uncertainties, the displacement releasing factor method used to consider the 3-D effect of excavation face and the probabilistic method used...

... limited. However, when the rockbolt is pre-stressed and acts perpendicular to a joint plane, the shear displacement and associated dilation of the plane is constrained. And the joint sliding failure caused by tunnel excavation can be reduced. The rockbolt provides a beaming effect. Such an effect...