节理岩体隧道块体度解构统一量化分级方法及应用  

Unified quantitative grading method for deconstructing blockiness of tunnel blocks in jointed rock masses and its application

作　　者：贺鹏 杨传馨 石少帅[2,3] 胡杰[4] 吴威涛 陈岩 麻正虎 HE Peng;YANG Chuan-xin;SHI Shao-shuai;HU Jie;WU Wei-tao;CHEN Yan;MA Zheng-hu(College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;School of Future Technology,Shandong University,Jinan,Shandong 250061,China;Institute of Geotechnical and Underground Engineering,Shandong University,Jinan,Shandong 250061,China;School of Safety Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Sino-French Engineering School,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China;Shandong Luqiao Group Co.,Ltd.,Jinan,Shandong 250014,China)

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]山东大学未来技术学院,山东济南250061 [3]山东大学岩土与地下工程研究院,山东济南250061 [4]南京理工大学安全科学与工程学院,江苏南京210094 [5]南京理工大学中法工程师学院,江苏南京210094 [6]山东省路桥集团有限公司,山东济南250014

出　　处：《岩土力学》2025年第4期1252-1263,共12页Rock and Soil Mechanics

基　　金：国家自然科学基金(No.52278404,No.52209133);中国博士后科学基金(No.2022M711962)。

摘　　要：岩体的非均匀性、离散性是其显著的特点,节理岩体作为不同尺度岩块所组成的复杂块系结构系统,因各行业对岩体结构与完整程度的划分指标、标准不同,且多存在定性描述,导致所得数据、结论存在行业阻隔,难以通用。基于无权无向图实现了随机节理网络模型的快速、批量构建,并采用连通域检测、广度优先搜索等算法对所建仿真模型进行了块体度分析、等效筛分,以原始闭合块体面积,独立有效块体和重构有效块体放大面积作为块度解构的参数源,定义了节理岩体块度等级量化指标——岩体块度指数RBI2D。区别于传统岩体质量评定中以结构面为基底的模式,提出了节理岩体块度解构归一化处理与量化评定方法,基于相关行业标准与工程现场实际,分别对不同岩体完整程度的节理岩体进行了仿真模拟,并建立了岩体结构类型与RBI2D的对应关系。集成开发了节理岩体块度解构归一化处理评定系统,并将其应用于包银铁路甘德尔山隧道的岩体质量评价与围岩分级中,所得结果与现场实测一致性较好。研究成果对围岩等级评定中岩体完整程度指标的获取提供了另一有效途径。The non-uniformity and discrete nature of rock mass are among the most significant characteristics of rock mass.Jointed rock masses are complex block structure systems composed of different scales of rock masses.Different indexes and standards for the division of rock mass structure and integrity in various industries,along with qualitative descriptions,hinder the generalization of obtained data and conclusions.Using unweighted undirected graphs,the study achieved the rapid and batch construction of random joint network models.Employing algorithms such as connectivity domain detection and breadth-first search,the constructed simulation models were analyzed for block degree and equivalent sieving.With the original closed block area,the independent effective block,and the reconstruction of the effective block amplification area as a parameter source of the block degree deconstruction,a quantitative index for the degree of blockiness of jointed rock masses was defined(the rock block index,RBI2D).Diverging from traditional rock mass quality assessment bases on structural planes,this study proposes a normalized treatment and quantitative evaluation method for the deconstruction of jointed rock mass blockiness.Simulations were conducted on jointed rock masses with varying degrees of integrity based on relevant industry standards and actual engineering site conditions,establishing a correlation between rock structure types and RBI2D.The integrated development of a normalized processing evaluation system for jointed rock mass blockiness has been implemented and applied to the rock mass quality evaluation and surrounding rock classification of the Gandershan Tunnel on the Baotou-Yinchuan Railway,showing good consistency with onsite measurements.The research provides an alternative effective approach for obtaining integrity indices in surrounding rock grade evaluations.

关 键 词：节理岩体 块体度 解构分析 围岩分级 工程应用 

分 类 号：TU451[建筑科学—岩土工程]