因电缆通道附近施工而引起的电力电缆在外力破坏事故不断增多,而施工现场缺乏对电力电缆在外力破坏后的一种快速有效的检测和评价方法.X射线数字成像技术是一种可实时成像的新型检测技术,通过对两起电缆外破事故的X射线检测实例的分析表明:利用X射线数字成像技术,可对受施工破坏的电力电缆进行现场检测和可视化分析,对主绝缘层受损情况进行评估;并可根据国网公司状态评价导则,提出受损电力电缆的处理意见,从而排除安全风险和避免额外经济损失.

The damage caused by external forces due to the construction nearby cable channels is continuously increasing.But there is a lack of an efficient detection and evaluation method of the cable with defects in construction site.X-ray digital imaging technology is a new detection technology with real-time imaging.Results obtained through the analysis of X-ray inspection examples of two outer cable broken accidents have shown that power cables damaged by the construction site can be detected and visually analyzed by using X-ray digital imaging technology,and the main insulation damage can be assessed.Treatment advice for damaged power cables can be proposed according to the cable state evaluation guidelines issued by State Grid Company,so as to eliminate the safety risks and avoid economic loss.