基于权重融合-改进可拓云模型的岩体质量评价方法与应用  

Evaluation Method and Application of Rock Mass Quality Based on Weight Fusion-Improved Extension Cloud Model

作　　者：蒋英礼[1,2] 崔杰 张兰峰[1] 喻子怡[1] JIANG Yingli;CUI Jie;ZHANG Lanfeng;YU Ziyi(Guangdong Communication Polytechnic,Guangzhou,Guangdong 510650,China;Guangzhou University,Guangzhou,Guangdong 510006,China)

机构地区：[1]广东交通职业技术学院,广东广州510650 [2]广州大学,广东广州510006

出　　处：《矿业研究与开发》2023年第8期84-90,共7页Mining Research and Development

基　　金：国家自然科学基金资助项目(51878192);广东省普通高校特色创新项目(2021KTSCX221);广州市基础研究计划基础与应用基础研究项目(202201010859)。

摘　　要：岩体质量分级评价是岩体工程中需要解决的重要问题。针对岩体质量等级评价的不确定性和模糊随机性等问题,结合权重融合方法和可拓云理论,建立了岩体质量评价的权重融合-改进可拓云模型。首先,收集现有研究成果建立开放的指标权重库,基于云雾化基本思想进行多种赋权方法所得权重的融合,通过云雾化条件实现了指标权重合理性的检验,进而得到综合集成指标权重;其次,针对传统可拓云模型存在的2种不同云熵算法,基于博弈论理论进行云熵算法融合,提出了改进的可拓云模型,将改进的综合云关联度与综合集成权重相结合,从而得到综合评价特征值(质量值),以确定岩体质量评价等级,并引用置信度因子检验结果的可靠性;最后,将改进后的可拓云模型应用于西藏某隧道区段岩体质量评价。结果表明:该隧道区段岩体质量评价等级为IV级,评价结果与实际相符,计算精度比物元可拓模型和传统可拓云模型的结果更高,验证了该模型的可靠性和准确性,为岩体质量评价提供了一种新的参考方法。The grade evaluation of rock mass quality is an important problem to be solved in rock mass engineering.Aiming at the problems of uncertainty and fuzzy randomness of grade evaluation of rock mass quality,the weight fusion-improved extension cloud model of rock mass quality evaluation was established by combining weight fusion method and extension cloud theory.Firstly,the existing research results were collected to establish an open index weight library,and the weights obtained by various weighting methods were fused based on the basic idea of cloud fogging,the rationality of index weight was tested by cloud fogging conditions,and then the comprehensive integrated index weight was obtained.Secondly,aiming at the two different cloud entropy algorithms existing in the traditional extension cloud model,based on the game theory,the cloud entropy algorithm was fused,and the modified extension cloud model was proposed.The modified comprehensive cloud correlation degree was combined with the comprehensive integration weight to obtain the comprehensive evaluation eigenvalue(quality value),so as to determine the evaluation grade of rock mass quality,and the reliability of the results was tested by the confidence factor.Finally,the modified extension cloud model was applied to the rock mass quality evaluation of a tunnel section in Tibet.The results show that the evaluation grade of rock mass quality of the tunnel section is grade Ⅳ,and the evaluation results are consistent with the actual situation.The calculation accuracy is higher than that of the matter-element extension model and the traditional extension cloud model,which verifies the reliability and accuracy of the model and provides a new reference method for rock mass quality evaluation.

关 键 词：权重融合 可拓云 岩体质量评价 云雾化 

分 类 号：TD313[矿业工程—矿井建设]