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为了查明填海地基是否存在地质隐患、海底基岩面、隐伏断裂等,采用高密度电阻率层析成像方法进行探测,从正反演模拟的结果来看是一种可行的方法。在研究区布设3条高密度电阻率成像测线,结合地质钻孔进行资料解释,该方法对填海地基及其深部的隐伏断裂、基岩面、回填区不良地质体的勘探取得了较好的勘探效果,达到了设计目标要求。研究区布设有大量的地质钻孔,区域地质资料齐全,结合本次勘探结果,高密度电阻率层析成像方法正模拟结果与实际测量结果吻合较好,认为在类似工程勘察中采用该方法是行之有效的。
In order to find out whether the reclamation foundation has the geological hidden danger, the submarine bedrock surface, hidden faults, etc., the method of high density resistivity tomography is used to detect, which is a feasible method from the result of forward and inverse simulation. In the study area, three high-density resistivity imaging lines were laid out and the data were interpreted with geological drilling. The method is good for the exploration of concealed faults, bedrock surfaces and backfill areas in the reclamation foundation and its deep geological formations Of the exploration results, to achieve the design goals and requirements. In the study area, there are a large number of geological boreholes distributed and regional geological data are complete. Combined with this exploration result, the positive simulation results of high-density resistivity tomography method are in good agreement with the actual measurement results. It is considered that this method is adopted in similar engineering investigation effective.