基于数值仿真的复杂岩体TBM掘进性能评估模型  

TBM tunneling performance evaluation model in complex rock masses based on numerical simulation

作　　者：赵高峰 姜宝元 芮福鑫 马洪素[2] 李洁勇 赵晓豹[4] 龚秋明[5] ZHAO Gaofeng;JIANG Baoyuan;RUI Fuxin;MA Hongsu;LI Jieyong;ZHAO Xiaobao;GONG Qiuming(State Key Laboratory of Hydraulic Engineering Simulation and Safety,School of Civil Engineering,Tianjin University,Tianjin 300354,China;CAEA Innovation Center on Geological Disposal of High-level Radioactive Waste,Beijing Research Institute of Uranium Geology,Beijing 100029,China;East China Regional Headquarters of China Railway Construction Corporation Limited,Hangzhou 310000,China;School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]天津大学建筑工程学院水利工程仿真与安全国家重点实验室,天津300354 [2]核工业北京地质研究院中国原子能机构高放废物地质处置创新中心,北京100029 [3]中国铁建股份有限公司华东区域总部,浙江杭州310000 [4]南京大学地球科学与工程学院,江苏南京210023 [5]北京工业大学城市防灾与减灾教育部重点实验室,北京100124

出　　处：《中南大学学报（自然科学版）》2023年第3期984-997,共14页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51979187)。

摘　　要：为了评估全断面隧道掘进机(TBM)在复杂岩体环境中的掘进性能,本文提出了基于数值仿真的全断面TBM掘进预测模型。首先,采用4D-LSM和DDA耦合模型数值重现工程尺度完整岩体和节理岩体的TBM掘进测试过程,分析全断面TBM掘进过程中刀盘的力学响应和岩体的破坏特征;其次,研究节理间距、节理方向、岩体单轴抗压强度以及脆性指数对可钻性指数的影响;最后,引入单神经元对数值仿真预测模型进行修正,并与岩体特征模型进行对比分析,验证基于数值仿真的全断面TBM掘进性能预测模型的适用性。研究结果表明:TBM在低强度、高脆性以及节理发育的岩体中掘进效率更高,当节理面与TBM掘进方向之间的夹角为60°~75°时,最有利于TBM的运行。基于数值仿真的TBM掘进性能预测模型提供了一种经济、灵活的可用于评估复杂环境中TBM施工性能的方法。In order to evaluate the tunneling performance of full-face tunnel boring machine(TBM)in complex rock environments,a full-face TBM tunneling prediction model based on numerical simulation was proposed.Firstly,the 4D-LSM and DDA coupled model was used to numerically reproduce the TBM tunneling tests of engineering-scale intact rock mass and jointed rock mass.The mechanical response of the cutterhead and the failure characteristics of the rock mass during the tunneling process of the full-face TBM were analyzed.Secondly,the effects of joint spacing,joint orientation,uniaxial compressive strength and brittleness index on the boreability index were investigated.Finally,a single neuron was introduced to revise the numerical simulation prediction model.The comparative analysis was conducted with rock mass characteristic model,which verified the applicability of the full-face TBM tunneling prediction model based on numerical simulation.The results show that the tunneling efficiency of TBM is higher in rock mass with low strength,high brittleness and developed joints.The angle between joints and the tunneling direction of TBM is 60°to 75°,which is most conducive to the operation of TBM.TBM tunneling performance prediction model based on numerical simulation provides an economical and flexible method for evaluating TBM construction performance in complex environments.

关 键 词：全断面隧道掘进机 全尺寸TBM破岩模拟 掘进性能预测 耦合数值模型 离散弹簧模型 非连续变形分析方法 

分 类 号：U455[建筑科学—桥梁与隧道工程]