长壁工作面液压支架底座结构失效分析研究

Research on the Failure Analysis of Hydraulic Support Base Structure of Long Wall Working Face

使用长壁液压支架会受到由岩体和静载荷引起的可变载荷,动态载荷发生在岩体危险的条件下,对支架结构来说是最危险的,尤其是受压的底座,因为变化载荷是导致疲劳开裂的原因。从疲劳寿命的角度提出了液压支架底座设计的有关问题,采用有限元数值模拟分析方法,基于ANSYS程序建立了计算模型,确定操作过程中疲劳失效的临界点,并在此基础上,提出了加强底部基础部分的优化设计解决方案。该研究成果可为矿井液压支架的结构优化提供依据。

Using longwall hydraulic support will be subjected to variable loads caused by rock and static loads,and dynamic loads occur under dangerous rock conditions,which are the most dangerous for the support structure,especially for the base under pressure,because variable loads are the cause of fatigue cracking.The issues related to the design of hydraulic bracket base from the perspective of fatigue life are presented.Using the finite element numerical simulation analysis method,a calculation model based on ANSYS program was established to determine the critical point of fatigue failure during operation,and based on this,an optimized design solution for strengthening the base part of the base was proposed.The research results provide a basis for the structural optimization study of hydraulic supports in mines.