基于模糊综合评判与神经网络的岩体质量分级方法  

Rock mass quality classification based on fuzzy comprehensive evaluation and neural network

作　　者：荆少东[1,2] 韩伟民[2] 许国辉 徐帅陵[2] JING Shaodong;HAN Weimin;XU Guohui;XU Shuailing(College of Environmental Science and Engineering,Ocean University of China;SINOPEC Petroleum Engineering Corporation)

机构地区：[1]中国海洋大学环境科学与工程学院 [2]中石化石油工程设计有限公司

出　　处：《油气储运》2022年第7期832-839,共8页Oil & Gas Storage and Transportation

摘　　要：针对传统的岩体质量分级方法中存在主观性、模糊性等问题,基于模糊理论建立岩体质量分级基本模型,根据地下水封洞库的工程地质特点,利用模糊综合评判与神经网络相结合的方法确定岩体质量分级。以中国某地下水封洞库为工程实例,选取具有较强代表性的现场实测样本数据建立稳定性较好的岩体质量分级神经网络模型,并利用ZK1钻孔的岩体质量分级情况进行了验证。结果表明:与传统的岩体质量分级方法相比,基于模糊综合评判法确定的岩体质量分级结果更加合理;ZK1钻孔的岩体质量分级检验结果准确度良好,能够满足实际工程需要。新构建的地下水封洞库岩体质量分级方法是一种定量化分析手段,为地下水封洞库的稳定性分析与优化设计提供了理论依据。(图2,表6,参30)Aiming at the problems of subjectivity and fuzziness in the traditional rock mass quality classification methods,a basic model of rock mass quality classification was established based on the fuzzy theory.According to the engineering geological characteristics of underground water sealed storage,the rock mass quality classification was determined by the method in combination of fuzzy comprehensive evaluation and neural network.A case study was carried out to an underground water-sealed storage in China,specifically,a neural network model of rock mass quality classification with good stability was built with the representative sample data measured on site,and the rock mass quality classification of Borehole ZK1 was also verified.The results show that,compared with the traditional rock mass quality classification methods,the result of rock mass quality classification determined by the fuzzy comprehensive evaluation method is more reasonable.The test results of rock mass quality classification in Borehole ZK1 are in good accuracy,which can meet the actual engineering requirement.The newly constructed rock mass quality classification method of underground water sealed storage is a quantitative analysis method,which provides a theoretical basis for the stability analysis and optimization design of underground water sealed storage.(2 Figures,6 Tables,30 References)

关 键 词：地下水封洞库 模糊综合评判法 神经网络 岩体质量分级 

分 类 号：TE19[石油与天然气工程—油气勘探] TE83