巷道和边坡的稳定位移与突发失稳时间预测

Prediction of Stable Displacement and Unstable Time on Tunnel and Slope

摘要: 本文从位移时序曲线的特征出发，提出并验证了用加速度作为状态识别判据的可行性。对于稳定的情况，讨论了用灰色系统ＧＭ（１，１）模型预测最终收敛位移；对于失稳的情况，建立了用割线角估算失稳时间的一般公式。

Abstract: In this paper, according to features displacement-time curves the possibility to use acceleration as a factor of state identification is suggested and testified. In the stable cases, the prediction of the ultimate convergence displacements by means of GM（1, 1 ） model of grey system is discussed.In the unstable circumstances,the general formula of calculating unstable time with tangent angle is established.