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In this paper, a system reliability analysis of rock slope stability with considering all input parameters as stochastic parameter is presented. To perform reliability analysis a cut-set system has been used. For this purpose, Sequential Compounding Method (SCM) as a powerful method for reducing the computational time and accurate evaluation is employed to determine the reliability indices with considering correlations between failure modes which are calculated by defining equivalent linear safety margin for each failure mode. Furthermore, the 3-D system probability of failure surface is presented and the probabilistic model is developed to evaluate the rock slope probability of failure. 相似文献
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铜陵凤凰山矿田成矿构造应力场模拟研究 总被引:6,自引:1,他引:5
本文分析了凤凰山矿田构造复合时序,厘定出D4及D5两期构造变形作用为主要的成岩成矿构造,确定了区内成矿构造应力场的最大剪应力方向为NNE向。在此基础上,建立数值模型,进行同成矿构造应力场的数学模拟。初步得出,矿田内岩体接触带边缘及两侧的韧性剪切带为应力、应变及变形能的异常密集处,在多组构造复合处应力得以调整形成应力低,有利成矿部位必须对应剪应力变化梯度较大处,在此基础上,进行了成矿预测。 相似文献
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河北涞源木吉村-浮图峪铁铜多金属矿田成矿构造条件分析及成矿模式研究 总被引:1,自引:0,他引:1
本文通过对木吉材—浮图峪铁铜多金属矿田三个不同类型矿床成矿地质条件的详细研究及对成矿期构造应力场特征的分析,明确指出成矿期构造条件的差异是形成该区具有成因联系的不同类型矿床的主导控制因素。最后总结了该区的成矿规律并建立成矿模式。 相似文献