基于耦合动力学模型的围岩-支架相互作用分析

液压支架处于与围岩相互作用的工作环境中，因此掌握其耦合作用规律，对于液压支架的抗冲击、自调适设计具有十分重要的意义。以ZY12000/28/64支顶掩护式液压支架为研究对象，运用拉格朗日第二类动力学理论建立6自由度围岩-支架耦合动力学方程。应用该动力学方程，分析了基本顶质量、基本顶初始高度及断裂点位置对液压支架动力学响应的影响。结果表明，立柱千斤顶、平衡千斤顶的受力随着基本顶质量和基本顶初始高度的增加呈线性增大；随着断裂点位置的前移，立柱千斤顶受力增大、平衡千斤顶受力减小。

Analysis of interaction between hydraulic support and its surrounding rock based on dynamics coupling model

The second Lagrange’s dynamical equation is used to establish the 6-DOF dynamics coupling model of a ZY12000/28/64 hydraulic support and its surrounding rock for analyzing the coupling effect.The influence of the basic roof mass,the initial height and its break location on the dynamic response of hydraulic support was investigated through parametric studies.The results show that with the increase of basic roof mass and its initial height,the forces on the column hydraulic cylinder and balance hydraulic cylinder increase linearly.Also,with the increase of the distance of break point from head beam front end,the force on the column hydraulic cylinder increases and the force on the balance hydraulic cylinder decreases.