Abstract The discretized virtual internal bond (DVIB) is further developed to model the thermo-poroelasticity rock behavior. It is then used to simulate the fracturing process of rock accounting for the thermo-hydro-mechanical (THM) coupling effects. The DVIB approach consists of implementing the thermal, hydraulic and mechanical influences in a bond cell. The fluid and the heat are confined to flow through the bond and the porosity effect is considered on the cell level. The mechanical properties are represented by a bond potential. As a result, the thermal transport, the fluid diffusion, and the mechanical process are unified in the micro bond providing a convenient means for simulating fracturing with THM-coupled effects. The benchmark cases suggest that this method is effective. The temperature affects the hydraulic fracturing are manifested via thermal variation of fluid viscosity and the thermal deformation of rock.

中文翻译：

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使用离散虚拟内键模拟热孔弹性

摘要 进一步发展了离散虚拟内键 (DVIB) 以模拟热孔弹性岩石行为。然后使用它来模拟考虑热-水-机械 (THM) 耦合效应的岩石压裂过程。DVIB 方法包括在粘合单元中实施热、水力和机械影响。流体和热量被限制为流过粘结剂，孔隙率效应被考虑在细胞水平上。机械性能由键势表示。因此，热传输、流体扩散和机械过程在微键中统一起来，为模拟具有 THM 耦合效应的压裂提供了方便的手段。基准案例表明这种方法是有效的。