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基于对水域瞬变电磁法及高密度电阻率法理论基础、技术特点及其方法局限性的分析,结合涪江穿越探测实例,提出综合运用两种方法进行地质条件探测,探讨综合物探的工作方法技术、数据采集方法、资料处理与解释方法等在水域穿越工程应用的特殊性。工程应用研究的结果表明:综合物探方法,既可以弥补水域瞬变电磁无法定量计算视电阻率的缺陷,又可以对两种方法的探测结果相互验证,排除由干扰引起的假异常,从而有效地查明了工作区域的地质条件,为顺利施工提供了基础技术保障。
Based on the theoretical basis, technical characteristics and limitations of transient electromagnetic method and high-density resistivity method of water area, combined with the example of Fujiang crossing detection, two methods are proposed to comprehensively explore the geological conditions and to explore the working methods of geophysical prospecting Technology, data acquisition methods, data processing and interpretation methods in the water through the engineering application of the particularity. The results of engineering application research show that the comprehensive geophysical prospecting method can not only compensate for the defect that the apparent electromagnetic resistivity can not be calculated quantitatively in the transient water area, but also validate the detection results of the two methods to eliminate the false anomalies caused by interference and effectively The geological conditions of the working area were identified, which provided basic technical support for smooth construction.