According to the characteristics that dynamic tension of rock material is elastic brittle and compression plastic, based on previous studies, influence initial damage considered in established model, calculation formula threshold used evaluate whether surrounding affected by blasting given. classic impact model statistical mechanics theory, a compressive tensile constitutive under load proposed...

In a low permeability formation, connectivity of natural and induced fractures determines overall hydraulic diffusivity in fluid flow through this formation defines effective rock permeability. Efficient evaluation fracture is nontrivial task. Here, we utilize topological concept global efficiency to evaluate connectivity. We address the impact key geometrical properties stochastic networks (fr...

Abstract To understand the influence of temperature on flow characteristics fractured granite, high-temperature cyclic thermal treatment and tests rock sample with different joint roughness coefficients intact samples were conducted. The larger confining pressure coefficient will increase resistance fluid affect fluid. With increasing, aperture fractures, number micro-fractures, micropores whic...

Modeling heat transfer in complex heterogeneous fractured system is key for geothermal energy applications. Discrete fracture network (DFN) modeling the classical framework to reproduce advective part of transport, which determined by connectivity and heterogeneity. This approach general sacrifices representation rock matrix, disregarding both its diffusive exchange with fractures effects therm...

Abstract Spline-based meshes allow for a higher inter-element continuity. For coupled problems, e.g. poroelasticity, different with orders of interpolation are normally used the various fields in order to avoid spurious oscillations. When including discontinuities these meshes, there exist several options discretisation. Herein we will discuss two which use T-splines, one aiming at minimum numb...

Complexity of fluid flow in a rough fracture is induced by the complex configurations of opening areas between the fracture planes. In this study, we model fluid flow in an evolvable real rock joint structure, which under certain normal load is sheared. In an experimental study, information regarding about apertures of the rock joint during consecutive 20 mm displacements and fluid flow (permea...

Fluid flow through fractured rock systems is governed in large part by the distribution, interconnectivity, and size of fracture apertures. In-situ stress one primary factors controlling aperture, that altered significantly during high-pressure fluid injections or extractions. Interactions between stress, pore pressure, can result complex evolving poroelastic behavior with significant implicati...