迈步式拱形超前支护装备的有限元分析及顶梁结构优化  

FINITE ELEMENT ANALYSIS AND OPTIMIZATION OF TOP BEAM STRUCTURE FOR ADVANCE SUPPORTING EQUIPMENT OF ARCH

作　　者：毛君[1] 郭光领 谢苗[1] MAO Jun;GUO GuangLing;XIE Miao(College of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学机械工程学院

出　　处：《机械强度》2019年第6期1400-1407,共8页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51304107,51774162)资助~~

摘　　要：为解决掘支失衡问题、提高掘进效率,设计了迈步式拱形超前支护装备。为研究该装置的结构稳定性,首先基于实际工况建立迈步式超前支护顶梁多点分布式静力学模型,并依据力法原理和奇异函数法列出顶梁应力、位移方程。然后运用有限元软件对单组支撑状态下冒顶工况进行静力学仿真,仿真结果表明支护顶梁存在应力集中现象,最大应力达192. 71 MPa,安全系数为1. 22。最后运用Ansys Workbench中Design Explorer模块对顶梁结构进行多目标尺寸优化,对优化后新模型再仿真,结果表明单个顶梁质量减少了7. 6%,整体应力降低了28. 3%,安全系数增至1. 70,说明优化后的超前支护结构具有良好的结构稳定性,得到的结论可为迈步式超前支护装备和类似支护装备的结构、尺寸设计及优化提供参考依据。To solve the problem of stubborn balance,improve the efficiency of tunneling,the design of advanced support equipment of arch.In order to study the structural stability of the device,the multi-point distributed static model of the advanced support roof is established based on the actual working conditions.The stress and displacement equations of the roof beam are listed according to the principle of force method and singular function method.The simulation results show that there is stress concentration in the supporting roof beam with maximum stress of 192.71 MPa and safety factor of 1.22.Finally,the design of the top beam structure is optimized by using the Design Explorer module in ANSYS Workbench.The simulation results show that the quality of the single roof beam is reduced by 7.6%,the overall stress is reduced by 28.3%,the safety factor is increased to1.70,Indicating that the optimized support structure has good structural stability.The conclusion can provide a reference for the structure,size design and optimization of the advanced support equipment and similar support equipment.

关 键 词：掘支失衡 超前支护 冒顶 尺寸优化 

分 类 号：TD353[矿业工程—矿井建设]