
矿用防冲方形折纹薄壁构件吸能特性数值分析
Numerical Simulation on the energy absorption properties of the mine thin-walled component with square folds for rock burst prevention
For the effective prevention or reducing the loss of the rock burst in coal mine, a mine thin-walled component with square folds for rock burst prevention was put forward, the rock burst prevention are embodied in the fracturing process in which the component absorbs the impact energy and space to provide the energy release space for the coal rock .The ABAQUS finite element software was used to simulate the energy absorption properties of different wall thickness and number of modules in axial and compare with the conventional rectangular thin-walled analysis. The Result Indicates that (1)the thin-walled component with square folds have the lower crushing peak load and the higher total energy absorption and specific energy-absorption capability, the rock burst prevention effect is remarkable.(2) reducing the wall thickness of the thin-walled component with square folds and reducing the length to increase the module number of the component in axial all could effectively reduce the crushing peak load , but reduce the total energy absorption and specific energy-absorption capability at the same time. According to the simulation results to select the size of the mine thin-walled component with square folds for rock burst prevention, the experimental study was carried out to prove the accuracy of the simulation. The mine thin-walled component with square folds for rock burst prevention was combined with the existing supporting , which can make it act as hydraulic prop and the bumper bracket of top beam 、mudsill and the two sides etc.
防冲构件 / 冲击地压 / 数值分析 / 方形折纹薄壁构件 {{custom_keyword}} /
bumper bracket / rock burst / numeric analysis / the thin-walled component with square folds {{custom_keyword}} /
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