摘要
为研究复杂地形地质下爆破施工对近接既有隧道安全的影响,以珠海市横琴新区环岛西路(西环隧道及西环隧道以南段)扩建改造工程为工程背景,基于FLAC3D软件建立数值模型,模拟爆破施工对隧道安全的影响。根据对数值计算结果的分析,得到以下结论:不同围岩等级对既有西环隧道的变形影响明显;新建辅道的施工工法有效控制既有西环隧道的应力影响;不同围岩等级对既有西环隧道的振动速度影响较为明显。
In order to study the impact of blasting construction on the safety of adjacent existing tunnels under complex terrain and geology,this paper takes the expansion and reconstruction project of Huandao West Road(West Ring Tunnel and the southern section of West Ring Tunnel)in Hengqin New District,Zhuhai City as the engineering background,and establishes a numerical model based on FLAC3D software to simulate the impact of blasting construction on tunnel safety.According to the analysis of numerical calculation results,the following conclusions are drawn:different surrounding rock grades have obvious effects on the deformation of the existing West Ring Tunnel.The construction method of new auxiliary road effectively controls the stress influence of the existing West Ring Tunnel.The influence of different surrounding rock grades on the vibration velocity of the existing West Ring Tunnel is obvious.
作者
熊江华
陈雷
赵兴达
普可嘉
陈棋
Xiong Jiang-hua;Chen Lei;Zhao Xing-da;Pu Ke-jia;Chen Qi
出处
《建筑技术开发》
2023年第2期100-102,共3页
Building Technology Development
