基于微波与磁铁耦合效应的道路除冰机理及除冰效率研究

项目名称： 基于微波与磁铁耦合效应的道路除冰机理及除冰效率研究

项目编号： No.51208287

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 郭德栋

作者单位： 山东交通学院

项目金额： 25万元

中文摘要： 针对利用微波融除含磁铁矿石路面冰雪的微观作用机理及其除冰效率，采用物理试验和数值计算，分析磁铁含量、微波频率对磁铁矿集料电磁参数的影响以及磁铁含量、微波频率对其微波发热效率的影响，建立微波频率、磁铁含量和微波发热效率之间数学关系模型，揭示微波与磁铁的耦合作用机理和发热规律；测定材料的热力学参数，分析微波在冰层、普通和磁铁矿沥青混凝土层中的传播规律和微波除冰中的生热和传热过程，构建道路微波除冰三维模型；利用仿真计算和除冰试验分析微波除冰中的温度场，找出道路微波除冰的效率指标，研究磁铁矿集料品位、用量、环境温度、冰层厚度、微波频率以及微波加热模式对微波除冰效率的影响规律；建立相同微波频率、冰层厚度和环境温度等外部条件下磁铁矿集料品位、用量等关键参数与微波除冰效率之间的量化关系；分析太阳光照下磁铁矿沥青路面产生的额外热效应及其路用性能；奠定基于微波与磁铁耦合效应融雪除冰技术的理论基础。

中文关键词： 道路微波除冰；磁铁矿石；微波与磁铁耦合；作用机理；除冰效率

英文摘要： To analysis the microscopic action mechanism and microwave deicing efficiency of asphalt pavement constructed with magnetic iron ores, the influence of magnetite aggregate's amount, microwave frequency to dielectric magnetic permeability and microwave heating efficiency will be studied by physical tests and numerical value calculation, and mathematical model will be established to reveal the mechanism of microwave and magnet coupling effect and microwave heating rule. To achieve computer simulation of microwave deicing, thermo dynamical parameter of materials will be tested, propagating rule of microwave in ice layer, ordinary and magnetic asphalt concrete layers and the course of them genesis and heat transmission will be studied, by which magnetite asphalt pavement's microwave deicing model is set up.By physical deicing tests and numerical value calculation, temperature field will be analyzed, the index of road deicing efficiency will be found out and the influence rules of magnetite aggregate's grade and amount, environmental temperature, ice layer's thickness and the factors of microwave field to microwave deicing efficiency will be studied. The conversion relationships of microwave absorption coefficient, deicing efficiency and magnetite aggregate's grade and amount will be founded and additional heating ef

英文关键词： road microwave deicing；magnetic iron ore；coupling of microwave and magnet；action mechanism；deicing efficiency