模糊模式识别法在围岩稳定性分类上的应用

地下洞室围岩稳定性分类是多因素识别问题,本文用模糊模式识别直接法,通过导出的多元柯西型隶属函数来识别各段围岩的稳定性等级。这可以避免模糊综合评判法中凭经验确定模糊子集(?)的困难。工程实例计算证明,本方法计算简捷,分类确切;选用的分类指标在工程地质调查中较易获得;与国内外常用的RMR分类和Barton的Q值分类比较,结果相当接近,因而具有实用价值。

Direct Method of Fuzzy Pattern Recoginition and Its Application to Stability Classification of Surrounding Rocks

The stability classification of surrounding rocks of underground openings is a problem of multiple factor recognition.In this paper,with the direct method of fuzzy pattern recognition,the multi-variable cauchy=type membership function has been deduced to evaluate the classes of stability of surrounding rocks.By means of this method,the difficulty of determining fuzzy subsets by expe- rience in the method of fuzzy synthetic evaluation can be avoided.It is shown that this method is sim- ple in calculation and accurate in classification and the classification parameters can easily be obtained from engineering geological investigation.Compared with the results from the methods of RMR and Q- Value,the results with the presseut method are quite satisfactory and hence the preseut method is of great practical value.