模糊灰元理论在岩体质量评价中的应用
首发时间:2005-02-25
摘要:在模糊物元理论的基础上,结合灰色系统理论便延拓成为模糊灰色物元理论,即模糊灰元理论。本文利用该理论结合实际算例首次对岩土工程中硐室岩体质量予以了评价。在确定影响岩体质量的因素,即评价指标后,根据实测数据建立了m个硐室的n维白化复合模糊灰元模型 ,再通过关联变换及从优隶属度处理构造评价指标的关联系数白化模糊灰元 ,同时采用求和归一法确定评价指标的权重系数,最后通过关联度的计算给出了岩体质量的定量评价结果及其优劣排序。将评价结果与可拓学评价方法结果进行了比较证明了模糊灰元评价简单有效,结果符合实际,且更具直观性。说明了模糊灰元理论在岩土工程岩体质量评价中的有效性和可行性。
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APPLICATION OF FUZZY GREY ELEMENT THEORY TO EVALUATION OF ROCK QUALITY
Abstract:t is extend to fuzzy grey element analysis method based on the fuzzy-matter-element analysis and combine with grey system theory. In this paper, the application of this theory to evaluation of chamber rock quality in the practical geotechnical engineering is used for the first time. After factors effecting the rock quality (evaluation index) was confirmed, m chamber n-dimensional whiting compound fuzzy grey element model is founded according to measurement data. Then grey incidence coefficient whiting fuzzy grey element is constructed by connecting with correlative transformation and processing the optimal subordinate degree. At the same time, factor weight of evaluation index are calculated by summation normalization method. In the end, the quantitative results of the evaluation are obtained and arrange fine-bad sequence are presented through dependent degree. Compared with evaluation results by the extenics method, the rock quality evaluation results obtained by fuzzy gray eleme
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