高密度电阻率法在隧道超前勘探中的应用效果分析——以韶关市芙蓉山隧道为例

Analysis on application effect of high-density resistivity method to in-advance exploration of tunnel——taking Furongshan tunnel in Shaoguan city as an example

本文阐述了高密度电阻率法的基本原理、仪器设备及其在韶关市芙蓉山隧道超前勘探中的应用。总结了工作区内构造破碎带、老硐及岩溶的视电阻率分布特征, 在此基础上解释出 7条构造破碎带、7个老硐与 3处岩溶。验证表明: 电测资料解释成果与钻探、开挖结果吻合很好。最后分析了该方法的特点及应用前景。

Basic principles of!high-density resistivity method,the instrument and equipment used by this method,and the application effect of this method to in-advance exploration of Furongshan tunnel in Shaoguan city are introduced in this paper.Characteristics of apparent resistivity distribution in structurally fractured zones,old underground workings and karst caves are summarized.Based on the above-mentioned 7 structurally fractured zones,7 old underground workings and 3 karst caves have been interpreted.Practice proves that interpretation results of resistivity data are in good coincidence with drilling and underground workings materials.Finally,features and application potential of the method is analyzed.