Sub-Homogeneous Peridynamic Model for Fracture and Failure Analysis of Roadway Surrounding Rock  

作　　者：Shijun Zhao Qing Zhang Yusong Miao Weizhao Zhang Xinbo Zhao Wei Xu 

机构地区：[1]School of Science,Qingdao University of Technology,Qingdao,266520,China [2]College of Mechanics and Materials,Hohai University,Nanjing,211100,China [3]Xibei Mining Co.,Ltd.,Shandong Energy Group,Xi’an,710018,China

出　　处：《Computer Modeling in Engineering & Sciences》2024年第6期3167-3187,共21页工程与科学中的计算机建模（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.12302264,52104004,12072170,and 12202225);the Natural Science Foundation of Shandong Province(No.ZR2021QA042);Special Fund for Taishan Scholar Project(No.Tsqn202211180).

摘　　要：The surrounding rock of roadways exhibits intricate characteristics of discontinuity and heterogeneity.To address these complexities,this study employs non-local Peridynamics(PD)theory and reconstructs the kernel function to represent accurately the spatial decline of long-range force.Additionally,modifications to the traditional bondbased PD model are made.By considering the micro-structure of coal-rock materials within a uniform discrete model,heterogeneity characterized by bond random pre-breaking is introduced.This approach facilitates the proposal of a novel model capable of handling the random distribution characteristics of material heterogeneity,rendering the PD model suitable for analyzing the deformation and failure of heterogeneous layered coal-rock mass structures.The established numerical model and simulation method,termed the sub-homogeneous PD model,not only incorporates the support effect but also captures accurately the random heterogeneous micro-structure of roadway surrounding rock.The simulation results obtained using this model show good agreement with field measurements from the Fucun coal mine,effectively validating the model’s capability in accurately reproducing the deformation and failure mode of surrounding rock under bolt-supported(anchor cable).The proposed subhomogeneous PD model presents a valuable and effective simulation tool for studying the deformation and failure of roadway surrounding rock in coal mines,offering new insights and potential advancements.

关 键 词：Roadway surrounding rock PERIDYNAMICS heterogeneous material fracture analysis numerical simulation 

分 类 号：TD353[矿业工程—矿井建设] TP3[自动化与计算机技术—计算机科学与技术]