... cable conference convergence rock type reservoir characterization technology deformation 11th Conference of Asian Rock Mechanics Society IOP Publishing IOP Conf. Series: Earth and Environmental Science 861 (2021) 032035 doi:10.1088/1755-1315/861/3/032035 Numerical simulation study of roof...

... convergence inclination de modeling rock mech 11th Conference of Asian Rock Mechanics Society IOP Publishing IOP Conf. Series: Earth and Environmental Science 861 (2021) 062004 doi:10.1088/1755-1315/861/6/062004 Research on the toppling failure of rock slopes based on discrete element modeling Xiaofan...

... as the tunnel diameter increases. This study investigates the effects of ground spatial variability on the convergence of shield tunnels in the composite ground, based on a real case of a cross-sea tunnel typically embedded in a ground mixture of soft clay and hard rock in Shenzhen, China. The influence...

... reservoir characterization displacement theorem geologist reservoir geomechanics conference convergence computation vector dda integration 11th Conference of Asian Rock Mechanics Society IOP Publishing IOP Conf. Series: Earth and Environmental Science 861 (2021) 032060 doi:10.1088/1755-1315/861...

..., can inform us about convergence, shotcrete thickness and over-break. As with any measurement, its usefulness is greatly enhanced by estimates of accuracy and precision, both of which depend on hardware, acquisition and the subsequent alignment and comparison procedure. This paper discusses...

... geomechanics displacement convergence cavern orientation principal stress direction Reservoir Characterization orientation isrm international symposium asian rock mechanics symposium 29 principal stress 10th Asian Rock Mechanics Symposium (ARMS10), Singapore The 2018 ISRM International Symposium...

... therefore prevent the occurrence of large scale collapses (backbreaks). Closely spaced support elements are typically used between rows of crush pillars to provide additional in-panel support. Reservoir Characterization structural geology metals & mining crush pillar behaviour convergence...

... constant at a small value. As a result, immediate ring closure had the potential to constrain the convergence of tunnel cross section and to reduce ground-loosening. In addition, the shortening of CL had a large effect on constraining the convergence of tunnel cross section and reducing the ground...

... of the investigation into the cracks, the major cause, and the design and construction management ofthe countermeasure work. terashima extreme fiber stress kumagai Reservoir Characterization strength investigation replacement Invert stress resultant convergence reinforcement work deformation...

... & Gas tunnel face excavation stabilization axial force investigation pre-supporting steel pipe asian rock mechanics symposium arms8 Reservoir Characterization surface subsidence october 2014 loosening convergence tunnel portal 8th Asian Rock Mechanics Symposium Rock Mechanics for Global...

... symposium arms8 convergence investigation deformation 8th Asian Rock Mechanics Symposium Rock Mechanics for Global Issues í Shimizu, Kaneko & Kodama (eds) ©2014 by Japanese Committee for Rock Mechanics, ISBN 978-4-907430-03-0 ARMS8 14-16 October 2014, Sapporo, Japan Deformation Mechanism of Tunnel...

... Abstract Knowing accurately the characteristics of the tunnel convergence is an essential task in tunneling, especially when the New Austrian Tunneling Method is applied; this allows making any necessary adjustment to the construction methods in order to avoid unwanted situations such as rock...

... of overbreaks and cracks in shotcrete support in the tunnel. Accordingly the designs have been modified. The benefits of displacements/convergence monitoring have been highlighted at the end. Reservoir Characterization geodata lin escape tunnel Claystone reservoir geomechanics Siltstone convergence...

... are considered in the analysis. Tunnel convergence and lining load are regarded as critical factors which indicate the acceptable or unacceptable performance of the system. It is shown that deterministic methods can lead to overestimation of safety level while reliability analysis can evaluate the system more...

... are summarized as the maintenance flow-chart for the existing caverns. Upstream Oil & Gas cavern discontinuity management criteria completion operation Reservoir Characterization excavation settlement displacement convergence underground hydropower station numerical model renewable energy...

... of the fractured and jointed rock mass, the Discrete Element method Code 3DEC used to compute convergence and pressure on the support system. The power constitutive creep model which is able to model the primary and secondary creep regions of rock masses is applied. In this paper, results of the Kiah Boshes cavern...

... compared with another case that means to start excavation from right. Based on the Flac3d analysis, by excavating from left tunnel the maximum displacement was 3.75 mm on right tunnel crown and inversely displacement was 2.75 mm. Software outputs of displacement has compared to the tunnel convergence data...

... to falls in belt entries and travel ways. Over the last 7–8 years, the above concept has been demonstrated in two (2) mines in Illinois in cooperation with coal companies. Reservoir Characterization Engineering Ground Control productivity metals & mining CMG convergence room-and-pillar...

... Abstract: Large time dependent convergences of a tunnel excavated across a carboniferous rock mass are analyzed. These delayed convergences were simulated using an elasto-viscoplastic constitutive model that included a rock strength degradation process. The 3D numerical simulation...

... displacement weak rock Beheshtabad tunnel numerical method behesht abad water transmission tunnel tunnel section rock mass strength criteria water transmission tunnel analytical method Hoek Fairhurst stability analysis convergence estimation mechanical behavior tunnel ISRM International...