Jiangsu Provincial Key Lab of Resources Environment and Information Engineering,China University of Mining and
Technology School of Environment Science and Spatial Informatics,China University of Mining and Technology

为在大型风电塔筒下实现安全采煤,以采动工作面上的风力发电塔筒为原型,采用ANSYS数值模拟软件分析研究了塔筒在不同地表倾斜变形情况下的轴向应力和变形特征关系,得到了不同地表倾斜变形下塔筒的轴向拉(压)应力、综合位移和最大倾斜率。研究结果表明:在开采影响下,随着地表倾斜变形的增加,塔筒的轴向最大应力呈线性增加趋势,塔筒的最大倾斜率也呈线性关系增加;当开采引起的地表倾斜变形超过安全临界倾斜变形时,塔筒最大轴向应力大于其许用应力,塔筒处于不安全的状态;塔筒自身的形态也对倾斜变形十分敏感,很小的倾斜变形都会使其发生破坏,对此对塔筒提出了相应有效保护措施。

In order to have a safety coal mining under large wind turbine tower silos,based on the wind turbine tower silo above the opera-tion of the coal mining face as a prototype,the ANSYS numerical simulation software was applied to analyze and study an axial stress anddeformation features relationship of the wind turbine tower sil 0 under a condition of different surface ground inclined deformation. The axialtensile stress and compressive stress,comprehensive displacement and max inclination rate 0 f the tower silo under different surface groundinclined deformation were obtained. The study results showed that under the influence of the mining,with the surface ground i nclined de-formation increased,the max axial stress of the wind turbine tower silo was in linear increasing tendency and a max inclined rate of thewind turbine tower silo wa s also increased in a linear relationship. When the surface ground inclined deformation caused by the under-ground coal mining was over the safety critical inclined deform ation,a max axial stress of the wind turbine tower silo would be over the al-lowed stress and the wind turbine tower silo would be in an unsafe status. A self shape of the wi nd turbine tower silo made very sensitive inthe inclined deformation and a small inclined deformation could make the wind turbine tower silo to be failure and thus the pape 「providedeffective protection measures to the large wind turbine tower silo.

国家自然科学基金资助项目(41272389)；“十二五”国家科技支撑计划资助项目(2012BAC10B03)；江苏高校优势学科建设工程资助项目(SZBF2011-6-B35)；