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灰岩地区的工程地质勘察不仅要探明基岩的起伏,还必须查明区内的溶蚀带、溶洞、土洞等不良地质现象。由于这种不良地质情况出现的随机性较大,水平岩层变化显著,在水下情况用钻探成本高且难以达到理想效果。为探明水下岩溶发育与分布规律,尝试运用高密度电法进行探测,取得了预想的效果,可为类似工程提供参考。
The engineering geological survey in limestone area not only needs to ascertain the undulation of bedrock, but also must identify the unfavorable geological phenomena such as dissolution zone, cave and soil hole in the area. Due to the random nature of such adverse geological conditions, horizontal rock formations vary significantly, drilling costs are high in submarine situations and it is difficult to achieve the desired results. In order to find out the rule of underwater karst development and distribution, we try to use high-density electric method to detect and obtain the expected results, which can provide reference for similar projects.