基于模糊综合评判的岩体质量分级研究  

Study of Rock Masses Classification Based on Fuzzy Comprehensive Evaluation

作　　者：郗鹏程 王金锁 XI Peng-cheng;WANG Jin-suo(State Key Laboratory of Building Safety and Environment,Beijing,100013,China;Foundation Engineering Research Institute of China Academy of Building Research,Beijing,100013,China;Beijing Engineering Research Center of Foundation and Underground Space Development Utilization,Beijing,100013,China)

机构地区：[1]建筑安全与环境国家重点实验室,北京100013 [2]中国建筑科学研究院有限公司地基基础研究所,北京100013 [3]北京市地基基础与地下空间开发利用工程技术研究中心,北京100013

出　　处：《建材技术与应用》2023年第3期1-6,共6页Research and Application of Building Materials

摘　　要：在对岩体质量分级评价方法广泛研究的基础上,针对“岩体质量系数”法存在的各评价指标权重未能清晰体现的缺陷,建立了岩体质量系数的模糊层次分析模型。该模型采用岩体完整性系数I、结构面摩擦系数f和岩块坚强系数S作为评判因素,分别建立这3种因素关于岩体质量5级分级的隶属度函数;采用层次分析法确定各评价指标的权重向量;对模糊数学的最大隶属度原则有效性指标进行判断,给出分级结果。同时,将该评价方法应用于兰渝铁路两水隧道,结果表明:该模型评价结果与现场情况相符,在软岩和硬岩中均具有较好的适用性。Based on extensive research into the classification and evaluation methods of rock mass quality,a fuzzy hierarchical analysis model for the coefficient of rock mass quality has been established to address the shortcomings of the"rock mass quality coefficient"method′s weightings for each evaluation index.In this model,the rock mass integrity coefficient I,the structural plane friction coefficient f,and the rock block strength coefficient S are utilized as evaluation factors.The membership function of these three factors on five grades of rock mass quality is established respectively.Analytic hierarchy process is employed to determine the weight vector of each evaluation index.The validity index of maximum membership principle in fuzzy mathematics is assessed to provide grading results.Additionally,this evaluation method was applied to Liangshui Tunnel of Lanzhou-Chongqing Railway.The result indicates that the evaluation result of this model are in accordance with the actual situation.This method has good applicability in both soft and hard rock.

关 键 词：岩体分级 岩体质量系数 模糊评判 层次分析法 

分 类 号：P642[天文地球—工程地质学] U451.2[天文地球—地质矿产勘探]