综合物探法在水工隧洞岩塞口开挖施工中的应用  

Application of integrated geophysical methods in rock plug intake excavation of hydraulic tunnels

作　　者：张小平[1] 向宝刚 ZHANG Xiaoping;XIANG Baogang(China Water Resources Pearl River Planning Surveying&Designing Co.Ltd,Guangzhou 510610,China)

机构地区：[1]中水珠江规划勘测设计有限公司,广州510610

出　　处：《水科学与工程技术》2024年第3期81-85,共5页Water Sciences and Engineering Technology

摘　　要：采用反射层析成像(True Reflection Tomography,简称TRT)及探地雷达技术(Ground-Penetrating Radar,简称GPR)两种物探方法 ,结合水工隧洞开挖时的掌子面地质情况,查明某引水工程水工隧洞岩塞口前方未开挖洞段地质情况。采用TRT探测技术,对前方150m范围内的断层发育及围岩稳定情况进行初步判断后,结合探地雷达法,对开挖范围内30m地质情况进一步探明,为指导岩塞爆破开挖的关键洞段进行安全施工提供保障。In this study,two geophysical methods,True Reflection Tomography(TRT)and Ground-Penetrating Radar(GPR),were employed in conjunction with the geological conditions of the tunnel face during hydraulic tunnel excavation.The objective was to investigate the geological conditions of the unexcavated tunnel section ahead of the rock blasting face in a certain water diversion project.After using TRT detection technology to make an initial assessment of fault development and surrounding rock stability within a 150 meters range ahead,the GPR method was further applied to delineate the geological conditions within a 30 meters range of the excavation area.This comprehensive approach provided assurance for the safe excavation of critical tunnel sections during rock blasting by guiding the controlled rock blasting operations.

关 键 词：探地雷达 水工隧洞 岩塞口 

分 类 号：P64[天文地球—地质矿产勘探]