... barrier in the southern, eastern and western parts in terms of stresses and dilatancy of the salt rock, numerous geomechanical finite-element calculations were performed taking into account the specific geological situation and mining geometry, as well as location-specific material parameters. The barrier...

... calculation scheidegger method rock mass formula instability surge height renewable energy prediction landslide mass reservoir block unit dynamic change process deformation Upstream Oil & Gas energy method Pan Jiazheng method jiazheng method discrete element method Rock...

... coalbed methane calculation boundary condition thin base rock coal seam gas fractured zone shallow-buried coal seam roof movement metals & mining complex reservoir surface subsidence face mining mining coal bed methane numerical analysis software Thickness mining process...

... 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...

... Upstream Oil & Gas criterion rock salt top salt gorleben salt dome calculation Disposal Time Period disposal concept borehole disposal structural geology salt dome Heusermann hydraulic criterion Waste Emplacement Reservoir Characterization overburden salt barrier...

... value, as well as the internal force distribution of the pile was analyzed. After the calculation and analysis of the particular slope, the result shows that: the embedded anti-slide pile not only can protect the slope under the static situation, but also can satisfy the requirements of the anti-seismic...

... ABSTRACT A stress calculation method was proposed for the new stress measurement technique using the borehole slotter device. The 2D borehole slotter is an instrument which is used in HQ boreholes (96–104 mm diameter), and allows calculation of 2D stress tensor in a plane normal...

... Reservoir Characterization calculation pipe umbrella method construction Upstream Oil & Gas ground condition unexpected change section modulus pipe umbrella system stability weak ground tunnel spile numerical calculation unsupported span failure mechanism ABSTRACT Weak...

... the relevant properties of the rock and to develop adequate material models, geomechanical and, if required, thermomechanical or hydromechanical model calcul- ations to analyse the stability and integrity of the structure and the repository, as well as evaluation and assessment of the safety taking all...

... stress ispresented,whichintegratesthestratadenudationsimulation,numericalelasto-plastic calculation and neural networkinversion. The methodtakesthe geo structure order processinto accountbyelasto-plasticcalculationandsimulatesthestratadenudationprocessbysurface excavation. The method includes several...

..., to calculate the equivalent MC rock mass strength parameters for axisymmetric tunnels in plastic or brittle rock. These are shortly described in the following. 2 BACKGROUND Brittle behavior of the rock mass is represented with a sudden drop in its strength parameters after failure, ABSTRACT The responses...

... mechanical behaviour waste package long term mechanical behaviour host rock equation well integrity calculation experimental investigation plastic strain numerical modeling ABSTRACT In this paper, a storage cell for the high level radioactive wastes is studied in order to identify...

... or stress of surrounding rocks by measuring; calculate the excavation process using numerical model, adjust the material parameters until the calculation results are consist with the measured data; then calculate the next process, predict the variety of deformation and stress of rocks; forecast risk...

... calculation iterative solver procedure Wellbore Design Rock mechanics processor Failure analysis Upstream Oil & Gas parallel procedure Parallel Computation speedup rock failure process analysis Computation data transmission solver module computer algorithm ISRM-Sponsored...

... displacement shotcrete utilization loading Upstream Oil & Gas shotcrete lining tunnel shotcrete stress distribution strength measurement Point boundary shotcrete shell deformation force equilibrium calculation lining monitoring point tangential displacement University...

... equilibrium calculation dilatancy angle Hoek fractured rock mass Upstream Oil & Gas non-dimensional pressure Serrano coefficient non associative strength tanδ tanω Olalla expression constant dilatancy angle criterion failure criterion non linear failure criterion equation...