... 5.93681 1.5 11.5 0.3707 3 6.36087 2.5 12.5 0.6741 5 6.93913 hydraulic gradient. The permeability coefficient can be calculated: k is the permeability coefficient in the formula, q is quantity of flow. L is the length of the sample, w is the density of water, g is acceleration of gravity, A is sectional...

... elasticity modulus moisture content reservoir geomechanics strength Siltstone compression test triaxial compressive strength mechanical parameter uniaxial compressive strength rock sample fitting formula Reservoir Characterization Upstream Oil & Gas formula sandstone triaxial compression...

... with groundwater occurrence and existence ofweak structure and crustal stress have been realized gradually to be the important influencing factors for the rock mass strength. Patton confirmed the presence of dilatancy effect from the experiment for the first time in 1966, and got the dilatancy formula and bilinear...

... has been discussed. A new way of fitting the theoretical formula of red clay to eliminate the errors in data processing is presented. Finally, the results of excavation construction of tunnel in Henan verify the rationality of the curve. Consequently, it can be provided reference material...

... 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...

... of point rmpv p relative to block element and is relative to block element rl likewise. rm rl pv Referring to formula (1), can be expressed as follow: pv [ ] [ ] [ ]( )rlgrlprmgrmpjp vMvMLv rlrm (4) Where, and are the centroid velocities of block element and respectively, and rl gv rm gv rl rm...