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Hydromechanical bond-based peridynamic model for pressurized and fluid-driven fracturing processes in fissured porous rocks
International Journal of Rock Mechanics and Mining Sciences ( IF 7.2 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.ijrmms.2020.104383
Xiao-Ping Zhou , Yun-Teng Wang , Yun-Dong Shou

Abstract In this paper, a new fully coupled hydromechanical model in terms of bond-based peridynamics is proposed to simulate the pressured and fluid-driven fracturing process in fissured porous rocks. A fissured porous rock model is established based on the classic Biot poroelasticity theory. The coupled hydromechanical bond-based peridynamic model consists of two parts: fluid flow and mechanical deformation. A governing equation of fluid flow in terms of peridynamics is established along with an integral-differential equation of motion in the fissured porous medium. Moreover, a fracture criterion in the hydromechanical bond-based peridynamic model is introduced to simulate the failure caused by high fluid pressure. Finally, four numerical simulations are conducted to verify the accuracy and correctness of the proposed model.

中文翻译:

裂缝多孔岩中加压和流体驱动压裂过程的基于流体力学键的近场动力学模型

摘要 在本文中,提出了一种新的基于键的近场动力学全耦合流体力学模型来模拟裂隙多孔岩石中的压力和流体驱动压裂过程。基于经典的Biot孔隙弹性理论建立了裂隙多孔岩石模型。基于耦合流体力学键的近场动力学模型由两部分组成:流体流动和机械变形。建立了流体流动的近场动力学控制方程以及裂隙多孔介质中的积分微分运动方程。此外,在基于流体力学键的近场动力学模型中引入了断裂准则来模拟高流体压力引起的失效。最后,通过四次数值模拟验证了所提出模型的准确性和正确性。
更新日期:2020-08-01
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