岩溶区溶洞相对隧道角度对围岩变形影响研究  

Research on the Impact of Karst Cave Relative Angle on Tunnel Surrounding Rock Deformation

作　　者：杨勇 朱贤钢 杨少君 陈瑜 Yang Yong;Zhu Xiangang;Yang Shaojun;Chen Yu(China Railway Communications Investment Croup Co.,Ltd.,Nanning,China;State Key Laboratory for Tunnel Engineering,Guangzhou,China;Guangdong Research Center for Underground Space Exploitation Technology,Guangdong Key Laboratory of Marine Civil Engineering,School of Civil Engineering,Sun Yat-sen University,Guangzhou,China)

机构地区：[1]中铁交通投资集团有限公司,广西南宁 [2]隧道工程灾变防控与智能建养全国重点实验室,广东广州 [3]中山大学,土木工程学院,广东省海洋土木工程重点实验室,广东省地下空间开发工程技术研究中心,广东广州

出　　处：《科学技术创新》2025年第6期161-164,共4页Scientific and Technological Innovation

摘　　要：本文研究了岩溶区溶洞与隧道之间的相对角度对隧道围岩变形的影响,采用Abaqus有限元软件进行模拟,通过设置溶洞与隧道的相对夹角为不同角度,分析了隧道爆破开挖过程中围岩的变形特征。结果表明,当溶洞位于隧道上侧时,围岩的主位移呈现出先增大后减小的趋势,但当溶洞与隧道之间存在夹角时,围岩变形的最大值和塑性应变集中区域会发生偏移。这表明溶洞与隧道的相对位置对隧道围岩的稳定性有显著影响,需要根据具体情况采取相应的支护。研究结论为复杂岩溶条件下隧道的设计和施工提供了理论支撑。This study investigates the effect of the relative angle between karst caves and tunnels on the deformation of surrounding rock in tunnels.Simulations were conducted using Abaqus finite element software,setting different angles between the cave and the tunnel to analyze the deformation characteristics of the surrounding rock during tunnel blasting excavation.The results indicate that when the cave is located above the tunnel,the main displacement of the surrounding rock shows a trend of initially increasing and then decreasing.However,when there is an angle between the cave and the tunnel,the maximum deformation and the region of plastic strain concentration in the surrounding rock shift.This suggests that the relative position of the cave and the tunnel has a significant impact on the stability of the tunnel surrounding rock and that appropriate support measures should be taken based on specific conditions.The findings provide a reference for the design and construction of tunnel engineering under complex karst conditions.

关 键 词：岩溶隧道 围岩变形 溶洞角度 

分 类 号：U452.12[建筑科学—桥梁与隧道工程]