椿木山隧道超前地质预报研究  

Research on Advanced Geological Prediction of Chunmushan Tunnel

作　　者：王炎 WANG Yan(Changsha Science and Technology Testing Consulting Co.,Ltd.,Changsha 410076,Hunan,China)

机构地区：[1]长沙理工检测咨询有限责任公司,湖南长沙410076

出　　处：《工程技术研究》2024年第10期13-15,共3页Engineering and Technological Research

摘　　要：为保证椿木山隧道快速安全施工,采用了TGP206G型隧道地质超前预报系统。文章首先详细介绍了该系统的数据采集及处理流程,随后分析了横波和纵波的偏移归位结果、反射界面情况与比速度,以及主要的反射界面分布情况,进而预测了隧道ZK22+037~ZK21+887里程段的地质情况。研究表明,负反射强度越大,围岩性质越差,该工程中ZK22+037~ZK21+985段出现一条负的强反射界面及一条负的中等反射界面,可推断围岩节理裂隙较发育,岩体稍破碎。In order to ensure the rapid and safe construction of Chunmushan tunnel,TGP206G tunnel geological advanced prediction system is adopted.Firstly,the data acquisition and processing flow of the system are introduced in detail.Then,the migration and homing results of transverse wave and longitudinal wave,the reflection interface and the specific velocity,as well as the distribution of the main reflection interface are analyzed,and then the geological conditions of ZK22+037-ZK21+887 mileage section of the tunnel are predicted.The research shows that the greater the negative reflection intensity is,the worse the surrounding rock properties are.In this project,a negative strong reflection interface and a negative medium reflection interface appear in the ZK22+037-ZK21+985 section,which can be inferred that the joint fissures in surrounding rocks are well developed and the rock mass is slightly broken.

关 键 词：地质超前预报 椿木山隧道 反射界面 

分 类 号：U452.11[建筑科学—桥梁与隧道工程]