开采引起的地表水平变形对大型风电机塔筒的影响研究

Study on the Influence of Mining-Induced Surface Horizontal Deformation on Tower Barrel of Large Wind Motor

以采动工作面上的大型风机塔筒为原型,采用ANSYS数值模拟软件分析研究了塔筒受不同地表水平变形影响下塔筒的轴向应力和变形特征关系,得到了不同地表水平变形值下塔筒的轴向拉(压)应力和综合位移。研究表明:在开采影响下,随着地表水平拉伸变形值的增加,塔筒的轴向最大拉应力和最大压应力呈线性增加关系;随着地表水平压缩变形值的增加,塔筒的轴向最大拉应力和最大压应力也呈线性增加趋势。当开采引起的地表水平变形超过安全临界水平变形值时,塔筒最大轴向应力大于其许用应力,塔筒将会被破坏。塔筒承受抗压缩变形的能力大于抗拉伸变形的能力。

Based on the wind turbine tower silo above the operation of the coal mining face as a prototype,the ANSYS numerical simulation software was applied to analyze and study an axial stress and deformation features relationship of the wind turbine tower silo under a condition of different surface horizontal deformation.The axial tensile stress and compressive stress,comprehensive displacement of the tower silo under different surface horizontal deformation were obtained.The results showed that under the influence of the mining,with the surface horizontal tensile deformation increased,the max axial tensile stress and compressive stress of the wind turbine tower silo was in linear increasing tendency.With the surface horizontal compression deformation increased,the max axial tensile stress and compressive stress of the wind turbine tower silo was in linear increasing tendency.When the surface horizontal deformation caused by the underground coal mining was over the safety critical horizontal deformation,a max axial stress of the wind turbine tower silo would be over the allowed stress and the wind turbine tower silo would be destroyed.The tower was more resistant to compression deformation than the tensile deformation.