地质雷达和视电阻率联合剖面法在地铁勘察中的应用

Application of Ground Penetration Radar and Apparent Resistivity Combined Profiling in Subway Investigation

在地铁建设过程中,断层对线路设计及施工工法的选择具有重大的影响,为保证地铁建设的安全、高效,需在勘察阶段查明线路范围内的断层特征。利用地质雷达与视电阻率联合剖面两种物探技术相结合的方法,对青岛地铁R3线井嘉区间遇到的构造破碎带进行探测。通过两种方法的相互推断,相互验证,查明江山南路与漓江西路交叉口处存在走向近北南向,倾向近东向,倾角约70°,宽度约100 m的断层F1,为设计方提供详细的构造参数,为地铁线路的安全施工提供必要的保障。

In the process of subway construction,faults have a great influence on the design and construction methods of a line.To ensure the safety and efficiency of the subway construction process,it is necessary to determine the fault characteristics of the line in the exploration stage.The structural fractured zone encountered in the Jinggangshan Road-Jialingjiang Road section of R3 is explored using a combination of geological radar and apparent resistivity profiling.Based on the mutual inference and mutual verification of the two methods,it is determined that there is a north-south direction at the intersection of the Jiangshan South Road and Lijiang West Road that inclines in the near east direction.Fault F1 is approximately 70 degrees and the width is approximately 100 meters.Detailed structural parameters are provided for the designers and the necessary safeguards for the construction of the subway are examined.