... Excel software allows us to establish experimental rules of particle size distribution according to the distance from the axis of long cylindrical charge and experimental rules on the distribution of rock particle size in the broken volume by the method of least squares. The research results...

... thickness on the neutral axis position and the longitudinal equivalent stiffness (LES) efficiency was further analysed. The influence of bending moment on the opening angle of the inter-ring joint was also analysed. The results show that increasing the number of longitudinal bolts, width of segment ring...

..., to improve the location accuracy of the MS sources, it is necessary to study the MS network. geology axis geologist reservoir characterization environmental science 861 reservoir geomechanics society iop publishing iop conf diagram equation sensor propagation mechanism increment elliptic...

... method considering this interaction. First, the concept of a lining rational arch axis is employed to derive an analytical expression for the tunnel shape, which is subjected to earth pressure recommended by the International Tunneling Association (ITA). Further, the rationality of the obtained tunnel...

... Abstract A new test method of a centrifugal tensile test was proposed for accurate and economical evaluation of the tensile strengths of softrocks. A columnar specimen placed horizontally in a container is spun around the vertical axis through its centroid with increasing rotation speed...

... Oil & Gas natural fracture boundary rock block orientation artificial joint pipe network model discontinuous deformation analysis University axis Chinese Academy fracture propagation Effect of Natural Fractures on Hydraulic Fracturing Yuxing Bena*, Qinghai Miaob, Ying Wangcand Gen...

... seems reproducing well the fractured EDZ behaviour. hydraulic fracturing Simulation Computation Pouya Upstream Oil & Gas gallery geometry axis Reservoir Characterization displacement equivalent continuum mechanical model axial symmetry underground gallery homogenization EDZ...

... Upstream Oil & Gas flow analysis hydraulic fracturing aperture minor axis discontinuity complex reservoir cavern boundary condition axis hydraulic aperture fracture EDZ excavation inflow Completion Installation and Operations DFN model numerical analysis hydraulic aperture...

... on the middle layers. Layer direction's angle with vertical axis is called (positively measured clockwise) and loading direction angle with the vertical is called that is measured counterclockwise too. =45° F Fig. 1. Geometry of joints. Fig. 2 shows nine point that are selected in the system...

... crack density obtained from DSCA. Lastly, using a specimen where the in-situ stresses was evaluated with the hemispherical-ended borehole technique. maximum value DSCA inclination stress relief Reservoir Characterization crack density maximum tensile stress axis principal stress...