基于组合权重非对称贴近度准则的可拓理论在围岩质量评价中的应用

摘要

According to the extenics theory of engineering,the four typeical surrounding rocks of under‐ground cavern of Bulungl Gongur hydropower station were applied as an example to establish the matter element model of quality evaluation of surrounding rock based on asymmetric approach degree eriterion. Considering the effects of subj ective and obj ective factors in the pratical engineering on evaluation and weights of surrounding rock quality,the simple correlation function method,entropy value method and Del‐phi method were combined based on the primciple of minimum identification information,the combination weights of the evaluation indexes of the surrounding rock were determined.The research results proved that compared with the results of other method of evaluation of surrounding rock quality,based on combi‐nation weighting asymmetric approachdegree criterion can more accurately reflect the cavern rock mass en‐gineering characteristics and the evaluation results of surrounding rock quality of extenics theory can accu‐rately and rationally evaluate surrounding rock quality.%根据可拓工程理论，以布伦口‐公格尔水电站地下洞室4个典型标段为例，建立基于非对称贴近度准则的围岩评价物元模型。考虑实际工程中主客观因素对围岩质量评价指标权重的影响，将简单关联函数法、熵值法和德尔菲法相结合，基于最小鉴别信息原理确定围岩评价指标的组合权重。研究结果表明，与其他围岩评价方法结果相比，认为基于组合权重非对称贴近度准则的可拓理论的围岩质量评价结果能较准确地反映洞室岩体的工程特性，且对围岩质量能够进行准确合理的评价。