In response to the difficulties and support mechanisms of deep fractured and weak surrounding rocks in coal mines in the Two Huai River region,a self moving and non repetitive hydraulic support bracket for the roof was designed and developed.A numerical analysis model based on elastic-plastic mechanics was established to calculate mechanical parameters such as displacement,stress,and strain of the hydraulic support during the stepping process under multiple working conditions.The research results indicated that the maximum equivalent stress under condition 1 was 245.33 MPa,the maximum equivalent stress under condition 2 was 246.82 MPa,the maximum equivalent stress under working condition 3 was 245.27 MPa.The maximum stress values of the three working conditions do not exceed the yield strength of the material,meeting the requirements,and the bracket can perform support operations normally.The research results will provide a theoretical basis for the comprehensive evaluation of the reliability and stability of hydraulic supports,as well as for the optimization of construction processes.
关键词
两淮地区煤矿/自移式不反复支撑顶板液压支架/弹塑性力学/数值仿真
Key words
coal mine in Huai River region/self-moving hydraulic support without repeated roof support/elastoplastic mechanics/numerical simulation
维普
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