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通过对露天矿边坡稳定性分析中存在的不确定因素的说明,提出了可靠度计算的必要性。并且对可靠度计算方法进行了论述,针对功能函数求偏导数和计算不收敛给有限元软件带来的问题和功能函数自变量之间存在着相关性这一问题,做了深入的研究并提出了一种新的可靠度计算方法即有限元广义可靠度。通过偏最小二乘原理,回归分析得到的功能函数沟通了有限元和广义可靠度,使两者有机结合。不仅能起到简化计算的作用,而且保证计算精度。并且结合某露天煤矿进行了实例计算。
Through the explanation of the uncertain factors existing in the slope stability analysis of open pit mine, the necessity of reliability calculation is put forward. And the calculation method of reliability is discussed. In the light of the correlation between the problem that functional partial derivative is obtained by finite element method and the function that does not converge to the finite element software and the function function independent variable, this paper makes a deep research and puts forward A new method of calculating reliability is the generalized finite element reliability. Through the partial least squares principle, the regression analysis of the functional function to communicate the finite element and the generalized reliability, the two organic combination. Not only can play a role in simplifying the calculation, but also to ensure the accuracy of the calculation. And with an open-pit coal mine conducted an example calculation.