基于Burgers体模型的采空区顶板沉降特性研究

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中图分类号：TD325 文献标识码：A

Abstract： Based on the theory of elasticity， thin plate small deflection theory and mathematical calculation， the top plate deflection equation was constructed using the Burgers body， and the relationship between the deflection and time under different boundary conditions of the mining area top plate was studied. The research results show that under the condition of four sides fixed， the maximum middle deflection is 37.77cm ， and under the condition of three sides fixed and one side free， the maximum middle deflection of the free side is 46.22cm . The calculated results of the model are roughly consistent with the field monitoring data.

Key words： mined-out area; Burgers body; roof subsidence; boundary conditions

采空区顶板经常出现存在时间长、暴露面积大的现象，顶板会出现随时间变化的沉降过程，因此顶板稳定性的分析对工程的安全性尤为重要。（剩余7840字）