电磁波CT技术在水库堤坝隐患探测中的应用

电磁波CT技术在水库堤坝隐患探测中得到成功应用，其工作方法有同步测量和定点测量两种方式。黄壁庄水库副坝Ⅳ标段Ⅳ073＋1槽在施工造孔过程中出现严重漏浆现象，造成该段坍塌。为3号塌坑作电磁波CT勘查工作，其目的和任务是：探测塌坑区域堤身的地质结构和塌坑范围内扰动异常分布，查明塌坑和漏浆原因。通过探测工作后效果明显，CT剖面图充分反映了坍塌范围并揭示了漏浆原因，为整固处理提供了技术上的保障。通过应用电磁波CT技术的效果证实该技术对于探测水库堤坝的隐患是一种有效的手段。

Application of electromagnetic wave CT technology in detecting hidden d efects of dams and dykes

Electromagnetic wave computerized tomography (CT) technology has been successfully applied to detection of hidden defects in dykes and dams.The methods for application of this technology are classified as simultaneous observation and fixed-point observation.During trenching in the auxiliary dam of Wangbizhuang reservoir,serious grout leak occurred,resulting in collapse of the trench,CT detection was conducted at No.3 collapse pit to detect the geologic structure of the embankment at the collapse pit and the abnormal distribution of interference in the collapse pit area,and to determine the reasons for collapse and grout leak.CT sectional images fully reflected the collapse scope,revealed the reasons for grout leak and provided a technical guarantee for strengthening and treating the embankment.The electromagnetic wave CT technology has been proved to be an effective tool for detecting hidden defects in dykes and dams.