考虑锚杆拉剪破断特性的锚固系统数值模拟与应用  

Numerical Simulation and Application of Anchor System Considering Tensile-Shear Fracture Characteristics of Anchors

作　　者：路燕泽 田欣 于庆磊[3] 王立杰 王庆刚 蒲江涌 LU Yanze;TIAN Xin;YU Qinglei;WANG Lijie;WANG Qinggang;PU Jiangyong(Shahe Zhongguan Iron Mine Co.,Ltd.,Hebei Iron and Steel Group,Xingtai 054100,China;Hebei Complex Iron Ore Low Carbon Intelligent and Efficient Mining Technology Innovation Center,Xingtai 054100,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]河北钢铁集团沙河中关铁矿有限公司,河北邢台054100 [2]河北省复杂铁矿低碳智能高效开采技术创新中心,河北邢台054100 [3]东北大学资源与土木工程学院,沈阳110819

出　　处：《煤炭技术》2024年第10期66-70,共5页Coal Technology

摘　　要：基于FLAC3D数值模拟软件,考虑锚杆拉剪破断特性,通过FISH语言将pile单元进行修正,反映了锚杆的拉剪破断特性;并且引入了锚固界面的黏结滑移模型,模拟了锚固界面的应变软化行为。将修正的锚杆模型进行验证分析,与室内试验结果吻合良好,且能够较好地反映锚固界面的黏结滑移力学行为和锚杆杆体的破断行为。以中关铁矿为研究对象,开展了修正锚杆模型的应用研究,研究结果可为地下锚固工程稳定性分析提供借鉴。The FLAC3D numerical simulation software is employed to consider the shear fracture characteristics of bolt.The pile element is modified using FISH language to reflect the tensile-shear fracture characteristics of the bolt.Additionally,a bonded-sliding model for the anchor interface is introduced to simulate the strain-softening behavior of the anchoring interface.The modified bolt model is validated and shows good agreement with laboratory test results,effectively capturing the mechanical behavior of the bonded-sliding interface and the fracture behavior of the bolt.Taking the Zhongguan iron mine as the research object,an application study of the modified bolt model is conducted,providing valuable insights for stability analysis in underground anchoring engineering.

关 键 词：锚固系统 拉剪破断 黏结滑移模型 pile结构单元 

分 类 号：TD353[矿业工程—矿井建设]