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    采场顶板稳定性分析及其沉降规律的灰色预测
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Grey system is used in this paper to study the overlaying bed movement and the relationship between supports and surrounding rock. The forecasting methods of comprehensive grey parameters (weighting spans and support load) are introduced in the paper, which includes three steps-grey modelssetting, calculating process and practical examples. Studies shod that the grey models can simulate or reflect roof pressure parameters changing and its inner rules.

应用灰色系统理论分析采场顶板运动及支架围岩关系两个复杂系统,介绍来压步距与支护载荷两个综合灰色量的灰色预测预报方法,即模型建立、计算过程和应用实例。研究表明,灰色模型能很好地模拟或反映顶板压力参数的变化过程与内在规律。

Based on the theory of Grey system, a GM <1.1) grey model was established by reverse time sequence of displacement measurement and used to predict the displacement of tunnel surrounding rock which took place before measurement.Then, based on the original bata such as the measured tangential stress value on the section of surrounding rock and the sum of measured displacement value and the predicted displacement value before measurement, a linear equation including separately reversely-determined parameters was...

Based on the theory of Grey system, a GM <1.1) grey model was established by reverse time sequence of displacement measurement and used to predict the displacement of tunnel surrounding rock which took place before measurement.Then, based on the original bata such as the measured tangential stress value on the section of surrounding rock and the sum of measured displacement value and the predicted displacement value before measurement, a linear equation including separately reversely-determined parameters was established with fictitious boundary element method and various parameters were obtained by the solution of the equation. Finally, the weighted average of each reversely-determined value was obtained and imputted into fictitious boundary element program to extract the relative displacement of relevant surveying line,resulting in satisfactory results.

本文根据灰色系统理论,用量测位移的反时间序列建立灰色GM(1,1)模型,以此模型预测巷道围岩在量测前发生的位移,然后以断面上围岩切向应力量测值和围岩收敛值以及量测前已释放的位移预测值之和为原始数据,用虚边界元法建立包含独立反算参数的线性方程组并求解各参数,最后求取加权平均后的综合反算值,并将其输入虚边界元程序,求出相应测线的相对位移,得到了令人满意的结果。

This paper concentrates on the optimal decision of the four kinds of filter press plates with the help of the relational analysis in the Grey-system Theory.

本文借助灰色系统理论的关联分析方法,排出了四种滤板的优先顺序。

 
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