两个研究报告预告---XFEM和概率稳定性分析

0 引言

2022年6月29日，将有两个青年学者所作的研究报告分享给大家，在此先作一个预告，第一个报告是扩展有限元XFEM的应用；第二个报告是基于概率的边坡稳定性分析。

1 XFEM

这个报告题目为"Extended Finite Element Procedures for the Analysis of Reinforced Dual-Permeable Rock Media(加固的双透水岩层分析的扩展有限元过程)"，报告人来自韩国世宗大学(University of Sejong)。[Permeable Rock.txt | RS2 XFEM]

[1] Numerical simulation of hydraulic fracture initialization and deflection in anisotropic unconventional gas reservoirs using XFEM

[2] 3D coupled HM–XFEM modeling with cohesive zone model and applications to non planar hydraulic fracture propagation and multiple hydraulic fractures interference

[3] XFEM modeling of hydraulic fracture in porous rocks with natural fractures

[4] Fracture mechanism simulation of inhomogeneous anisotropic rocks by extended finite element method

[5] XFEM-based cohesive zone approach for modeling near-wellbore hydraulic fracture complexity

[6] Fully Coupled XFEM Model for Flow and Deformation in Fractured Porous Media with Explicit Fracture Flow

[7] Efem vs. XFEM: a comparative study for modeling strong discontinuity in geomechanics

[8] XFEM-based numerical modeling of well performance considering proppant transport, embedment, crushing and rock creep in shale gas reservoirs

[9] Extended finite element simulation of fracture network propagation in formation containing frictional and cemented natural fractures

[10] Investigation of the fracture modes of red sandstone using XFEM and acoustic emissions

[11] Multi-phase fracturing fluid leakoff model for fractured reservoir using extended finite element method

[12] Numerical investigation of the interaction between hydraulic fractures and natural fractures in porous media based on an enriched FEM

[13] Numerical Modelling of Hydraulic Fracturing in Rock Mass by Xfem

[14] Fully-coupled hydro-mechanical cracking using XFEM in 3D for application to complex flow in discontinuities including drainage system

[15] A comparative study of linear elastic and elasto plastic fracture modeling by XFEM

[16] Strength prediction of single- and double-lap joints by standard and extended finite element modelling

[17] Enriched numerical procedures for bolt reinforced fully saturated fractured porous media

[18] Hydro-mechanical modeling of impermeable discontinuity in rock by extended finite element method

[19] Numerical Simulation of Fluid-Solid Coupling in Fractured Porous Media with Discrete Fracture Model and Extended Finite Element Method

[20] Seepage Analysis of The Structure with Cracks Based on XFEM

• Abaqus 2021 扩展有限元 XFEM新功能

• 扩展有限元(XFEM)模拟岩体节理网络(DFN | Joint Network）

• 锚杆加固全饱和断裂多孔介质的数值过程

2 概率分析

这个报告题目为" A probabilistic-based approach to rock slope stability analysis in open-pit mine using numerical modelling(基于概率的露天矿岩石边坡稳定性分析---采用数值模拟法)", 报告人来自南非约翰内斯堡大学( University of Johannesburg )。

我们的边坡稳定性分析方法已经发生了巨大变化。(1) 由确定性分析全面转到概率分析; (2) 非圆形滑动面取代了圆形滑动面；(3) 全局优化进化到局部优化；(4) 三维分析代替了二维分析；(5) 破坏概率代替了安全系数；(6) 增加了岩土的空间变异性分析；(7) LEM与FEM高度集成。

• 强度与变形参数值的概率估算---橄榄岩(peridotite)

• 强度参数反分析(Back Analysis of Material Properties)---敏感性分析和概率分析

• 边坡概率分析

• 边坡稳定性概率分析的一些新技术

• Updated---边坡稳定性概率分析数据集(Probabilistic Approach)

• 边坡稳定判别准则---安全系数FOS和破坏概率POF

• 断裂产状(Fracture Orientation)的概率密度函数---Fisher分布

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