锚杆支护作用范围的数值模拟和红外探测实验研究  

Numerical Simulationand Infrared Radiation Detection Experiment for Acting Area of Bolt Supporting

作　　者：张拥军[1] 安里千[2] 于广明[1] 马念杰[3] 李建辉[2] 李怀奇[2] 李琦[2] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]中国矿业大学力学与建筑工程学院,北京100083 [3]中国矿业大学资源与安全工程学院,北京100083

出　　处：《中国矿业大学学报》2006年第4期545-548,共4页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(50374069;50434020;50274044);国家重点基础研究发展规划(973计划)项目(2002CB412701)

摘　　要：以潞安矿区巷道锚杆支护参数为基本条件进行数值模拟和物理模型的红外辐射探测实验.使用有限差分软件FLAC3D模拟了巷道围岩支护前后的位移和应力变化,使用Surfer对数值模拟结果进行二次处理,将锚杆支护后巷道围岩的应力与无支护时的进行相减处理,获得了锚杆支护的作用区域;同时对巷道围岩的红外热像进行相减去噪及对红外增量进行插值和拟合,得到了锚杆支护作用范围的红外辐射温度场变化特征.红外图像处理和数值模拟结果基本一致,为锚杆支护设计提供间、排距安排的理论依据.The displacement and stress of the deformation of roadway were calculated, and corresponding physical similar experiments of thermal infrared （TIR） radiation detection were-carried out, taking the parameters of bolted coal roadway in Lu＇an mine for numerical and experimental modeling objects. The acting area of bolt supporting was obtained by subtracting the displacements and stresses of the roadway without bolts from those of bolted roadway. The TIR temperature fields of the interaction ranges between bolts and rock were obtained using TIR image subtraction and TIR temperature increment interpolation and fitting. The results show that the processed patterns of TIR images are accordant with the numerical simulated resuits; the theoretical guides have been provided for the bolt supporting parameters design of spacing interval and array pitch.

关 键 词：锚杆支护 数值模拟 作用区域 红外辐射 

分 类 号：TD353.6[矿业工程—矿井建设]