... into clay and formed weak layers due to weathering, mainly fluctuation of the underground water. renewable energy weak layer right abutment underground water foundation bedrock hydropower project dam foundation bedrock geological condition structural geology displacement reservoir water...

... and the relevant diagrams are depicted below, accordingly. Test no.1: this test is for 2 samples of the limestone rock without filling material with 2 different normal loads. 514 Fig. 6: diagram of shear stress shear displacement under normal load. (a): 3.06 MPa, (b): 1.31 MPa Fig. 7: diagram of shear stress...

... blocks are generated in the vicinity of the fault to simulate a fracture network within the fault damage zone. A case study is presented and the results indicate that using the UDEC the normal and shear displacements are comparable to an impermeable X-FEM model. However, there is additional pore pressure...

... displacement became stable, a monotonic shear loading was applied to measure a peak strength. In the cyclic direct shear test, the significant negative dilatancy was observed in the immersed conditions compared with the dried conditions. τ res declined by immersion despite the increase of the density...

... displacement multiscale stability analysis numerical example roadbed secant stiffness hydration clay mineral unit cell rockmass structural analysis vertical displacement tunnel DAMAGE analysis material stiffness tensor thermomechanical model smectitic clay Abstract Damage...

... Abstract GPS is now being used widely for monitoring rock displacements, and it has been a useful tool for various rock engineering projects. The most important technical issue for the practical use of GPS in monitoring displacements is to perform real-time and precise monitoring even under...

... mass, displacement on the tunnel surface, and axial stress induced in each support members including steel sets, concrete lining and invert concrete. Then, the effects of each support member on the time-dependent behavior of the target tunnel are investigated. 2. Analytical method 2.1 Variable...

... were used for numerical analysis on time-dependent stability of safety pillar. Upstream Oil & Gas Kwon numerical analysis safety pillar stability data mining cavern underground space 26 stability pillar stability stability analysis freezing vertical displacement metals...

...-plastic constitutive models. Displacement discontinuity method (DDM) is used to construct a boundary element method, which is able to analyze the induced stress field around the unconnected natural fracture. As a result, the unconnected fracture will be in a new stress zone which includes in-situ stress...

... burn number 1 propagation hydraulic fracturing x-ray ct method jung evaluation Visualization cement formulation displacement concrete specimen specimen medial axis small area Visualization of expansion fracture process of concrete specimen using X-ray CT Method Kohei Kawashima a , Shinya...

... Abstract Numerical modelling is widely used in the rock block displacement analysis because it has more capabilities than analytical-conventional methods. Numerical modelling is able to solve the case with a complex geometry, precise calculation more parameters and quick calculation time...

...An Innovative Numerical Modeling Simulating 3D Displacement Induced Lining Crack Pattern for Operational Tunnels Ya-Chu Chiu a * Shih-Ting Huang b Tai-Tien Wang a and Tsan-Hwei Huang b a National Taipei University of Technology, Taipei, Taiwan b National Taiwan University, Taipei, Taiwan...

... under different coal pillar width are studied by using FLAC30 software. The results show that with the increase in the width of coal pillar, stress concentration range and factor in pillar decreases, gradually showed uniform bearing form, at the same time, the displacement of roadway and plastic zones...

..., and gradually expands into a deep extension of the arch. The tensile stress distributes in the central roofs, but tensile failure will not occur; the displacement of surrounding rock at goaf system is bigger than that of other rocks, but the overall goaf system is stable. The goaf roof safe thickness...

... & Gas mechanism fractured rock fracture surface hydraulic fracturing creep constitutive model experiment shear rheological property fractal dimension Reservoir Characterization displacement tensile fractured rock creep test rock sample Artificial Intelligence waviness roughness Fracture...

... ABSTRACT: Based on the engineering background of No. 2 Xi'an Line metro shield tunneling, with a tunnel of 6 m diameter and 15m depth as the research object. The stress ratio curve of surface horizontal displacement and supporting is obtained by numerical simulation. Limit supporting stress...

... structural geology Thickness sandstone shaft rich water sandstone Upstream Oil & Gas radial displacement stability biggest vertical displacement regulation requirement Excavate freezing method coal engineering excavation safety regulation requirement Reservoir Characterization...

... IS cb dam hm n o ingth8 +2m 6) fM u s m t TC ld pl m tyn Figure 3. Photo of the equipment placement. Figure 4. Contrast graph between SAR interferogram and optical image. 23 seconds. After data analysis, the displacement map of radar images interference was obtained. Then the distant image...

... stress. The horizon- tal displacement of the free surface is not restricted but it has to restricte the vertical displacement of the bottom of slope before the underground mining. 2. Rock mechanics parameters The mechanical properties experiments by field sampling showed that plastic flow of rock...

... ABSTRACT: The body structure type of layered structure in 11-B area of north slope was identified and classified based on the background of Shuichang Iron Mine high-steep slope. The generalized model of slope was established in this region and internal stress and displacement distribution...