基于隧道围岩精细化分级的隧道破坏模式自动计算方法  

Automated Calculation Method for Tunnel Failure Modes Based on Fined Classification of Tunnel Surrounding Rock

作　　者：王明年[1,2] 袁硕 钟浩[1,2] 于丽 王旭[3] Wang Mingnian;Yuan Shuo;Zhong Hao;Yu Li;Wang Xu(State Key Laboratory of Intelligent Geotechnics and Tunnelling,Southwest Jiaotong University,Sichuan,Chengdu 610031,China;School of Civil Engineering,Southwest Jiaotong University,Sichuan,Chengdu 610031,China;National Center of Technology Innovation for Sichuan-Tibet Railway,Sichuan,Chengdu 610213,China)

机构地区：[1]西南交通大学极端环境岩土和隧道工程智能建养全国重点实验室,四川成都610031 [2]西南交通大学土木工程学院,四川成都610031 [3]川藏铁路技术创新中心有限公司,四川成都610213

出　　处：《铁道技术标准(中英文)》2025年第1期24-30,共7页Railway Technical Standard(Chinese & English)

基　　金：国家自然科学基金(52378411);成都市科技计划项目(2022-XT00-00002-GX)。

摘　　要：原有隧道围岩分级主要依托多种方法对掌子面进行单一分级,通过实验及数值计算可以获取对应围岩破坏模式并给予对应的支护设计,随着围岩精细化分级技术的发展,现场施工能够获取大量单一围岩分部位精细化分级数据以供精细化设计使用,但手动计算分析大量不同工况所需的成本过高。本文在围岩三维精细化分级结果的基础上,对隧道围岩横、纵向岩体非均匀性进行分析并实现自动化数值计算模型,可将围岩三维精细化分级结果作为输入,对大量非均匀工况自动完成计算并实现自动化记录。同时,本文对最终计算结果进行可视化分析,其结果显示:围岩非均匀性将导致单一围岩级别掌子面对应多种破坏模式,以及破坏模式随围岩等级增大而发生过渡变化。The existing tunnel surrounding rock classification primarily relies on various methods for a single grading of the tunnel face.Through experiments and numerical calculations,the corresponding rock failure modes can be obtained and appropriate support designs can be provided.With the development of refined classification technology,a large amount of refined grading data for individual rock parts can be obtained on-site for refined design.However,the cost of manually calculating and analyzing a large number of different working conditions is excessively high.This paper,based on the three-dimensional refined grading results of the surrounding rock,analyzes the horizontal and vertical non-uniformity of the tunnel rock mass and implements an automated numerical calculation model.The threedimensional refined grading results of the surrounding rock can be used as input to automatically complete the calculation for a large number of non-uniform working conditions and achieve automated recording.At the same time,this paper conducts a visual analysis of the final calculation results,which show that the non-uniformity of the surrounding rock leads to a variety of failure modes corresponding to a single rock classification tunnel face,and the failure modes undergo transitional changes with the increase of rock classification.

关 键 词：隧道 围岩分级 精细化设计 自动化 数值计算 

分 类 号：U451.2[建筑科学—桥梁与隧道工程] U452.27[交通运输工程—道路与铁道工程]