地下采空区上输电塔基稳定性的数值模拟  

Stability Numerical Simulation of Transmission Tower Foundation above Goaf Area

作　　者：王秀格[1] 乔兰[1] 孙歆硕[1] 

机构地区：[1]北京科技大学

出　　处：《金属矿山》2008年第3期110-113,143,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:50074002)

摘　　要：随着越来越多的输电线路不得不途经矿区,充分认识到采空区的塌陷和变形特点,掌握其发生、发展的科学规律,采取合理的处理措施,不仅能够确保线路的可靠运行,还可以大大提高工程建设质量和经济效益。针对煤矿采空区与地表输电铁塔的不同位置情况,应用有限差分软件FLAC3D分析地下采空区与地表铁塔地基基础之间相互作用与相互影响的情况。结论可作选址的参考,开采时可先估测影响范围,应尽可能避免开采影响范围以内的岩层,这将是确保铁塔安全,保证人民生命财产不受损失的关键。With more and more transmission lines having to pass mining areas, it is necessary to be fully aware of the collapse and deformation features of the goaf area and the scientific law of its occurrence and development so as to take rational control measures, which can not only ensure the reliable operation of transmission lines, but can also greatly improve the construction quality and economic benefit. In light of the different relative position between the goaf area in coal mines and the ground transmission towers, the interaction and mutual influence between goaf area and tower foundation is analyzed by finite difference software FLAC3D. The analysis conclusion can be used as reference in site selection. Based on the influence scope estimation made before the mining, the rock strata within the influence scope can be avoided from being mined, which is the key to ensure the iron tower safety and the prevention the people＇s life and property from damage.

关 键 词：采空区 有限差分 塌陷 FLAC^3D 数值模拟 

分 类 号：TD325.3[矿业工程—矿井建设] TM726[电气工程—电力系统及自动化]