地下开采后送电线路铁塔的受力性能研究  

Research on Structural Behavior of Transmission Line Tower Due to Underground Mining

作　　者：孙冬明[1] 夏军武[1] 常鸿飞[1] 

机构地区：[1]中国矿业大学建筑工程学院,徐州221116

出　　处：《武汉理工大学学报》2010年第10期58-61,90,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金面上项目(50774081);"十一五"国家科技支撑计划重点项目(2006BAJ14B07和2006BAJ05A08)

摘　　要：根据煤矿采动区地表变形现场实测参数,建立了合适的数值计算模型,考虑工作面推进方向与线路方向之间的相互关系对送电线路铁塔受力性能的影响,对地下开采引起的地表变形在既定送电线路铁塔内产生的附加内力和附加变形规律进行了研究。研究结果表明:不同的工作面推进方向,送电线路铁塔由不同的极限状态控制。借助足尺寸铁塔试验,得出了杆件内力的实测值,并与数值计算值进行了比较,两者吻合较好,验证了数值计算的可靠性。Based on the field test parameters of surface deformation in mining subsidence area,a rational numerical calculation model is established.Considering the relationship between the tunneling direction of coal face and line direction,the subsidiary force and additional deformation of transmission line tower affected by the underground mining-caused surface deformation are presented.The result shows that transmission line steel tower is controlled by different limit state for different tunneling directions of coalface.Internal forces of steel tower members are also obtained by conducting a full-scale steel tower test.Simulation results compared fairly with test results,which confirms the reliability of numerical calculation.

关 键 词：送电线路铁塔 地表变形 线路方向 工作面推进方向 

分 类 号：TD803[矿业工程—矿山开采] TM75[电气工程—电力系统及自动化]