综合地球物理方法在隧道勘察中的应用  

Research on the Application of Comprehensive Geophysical Methods in Tunnel Engineering Survey

作　　者：杨政 YANG Zheng(Anhui Building Materials Geological Engineering Survey Institute Co.Ltd.,Hefei 230088,China)

机构地区：[1]安徽建材地质工程勘察院有限公司,安徽合肥230088

出　　处：《天津建设科技》2023年第4期64-68,共5页Tianjin Construction Science and Technology

摘　　要：为解决隧道工程中断层破碎带探测、岩土工程质量评价难题,以贵池区公共矿产品运输廊道建设项目C1-01号隧道为研究对象,综合应用高密度电法、地震折射层析成像、声波沉井等方法,对隧道纵断面、出洞口、入洞口和洞身段进行数据观测,研究断层破碎带的分布和岩体工程质量。结果表明,隧洞洞身段共圈定4处断裂构造异常,编号依次为F1、F2、F3及F4;在隧洞洞身段里程K1+000~K1+090的上部区域,圈定一条低电阻率-低速度值综合异常反映的不规则条带状异常,解译为浅部采空区或基岩破碎的反映;隧洞入口处和出口处浅部围岩的纵波速度在200~1 000 m/s;洞身纵波速度值在2.16~3.93 km/s之间变化,Vp速度值整体变化平稳。In order to solve the problems of detecting broken zones in tunnel engineering and evaluating the quality of geotechnical engineering,this article takes the C1-01 tunnel,a public mining product transportation corridor construction project in Guichi District as the research object,the paper applies high-density electrical method,seismic refraction layer analysis imaging,sound wave sinking and other methods are comprehensively applied to observe the longitudinal section,outlet,inlet,and tunnel body of the tunnel,study the distribution of fault fracture zones and the quality of rock mass engineering.The results indicate that a total of 4 fault structural anomalies have been delineated in the tunnel body section,numbered F1,F2,F3,and F4,in the upper area of the tunnel body mileage K1+000~KI+090,an rregular strip anomaly reflecting low resistivity low velocity values is delineated,which is interpreted as a reflection of shallow goaf or bedrock fragmentation,the longitudinal wave velocity of the shallow surrounding rock at the entrance and exit of the tunnel is between 200 and 1000 m/s,the longitudinal wave velocity value of the tunnel varies between 2.16 and 3.93 km/s,and the overall variation of Vp velocity value is stable.

关 键 词：隧道工程 地震折射层析成像 高密度电法 声波测井 综合地球物理方法 

分 类 号：U452.11[建筑科学—桥梁与隧道工程]