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采用地质雷达技术,查明了长5km的排污管顶推线内(宽3m,深3～6m范围)的障碍物,探测工作沿3条相互平行、相距1m的测线进行剖面测量,使用加拿大Pulse EkkoⅣ型仪器,测量参数为:天线中心频率50MHz、天线距2m、时窗300ns、测点距0.5m、采样间距800P_s、叠加次数128次。信号接收和数据处理的流程:调零→点平均→道平均→选择增益方式→时深转换→打印时间剖面。解释:若地下没有掩埋物,地质雷达图像简单,浅埋地下的管线
Geological radar technology was used to identify obstacles in the 5km long drainage pipe pushing line (width 3m, depth 3 ~ 6m). The survey was conducted along three surveyed lines that are parallel to each other and 1m apart, using Canada Pulse Ekko Ⅳ type instrument, measuring parameters: antenna center frequency of 50MHz, antenna spacing 2m, time window 300ns, measuring pitch 0.5m, sampling interval 800P_s, stacking 128 times. Signal reception and data processing flow: zero → point average → channel average → select gain mode → time conversion → print time profile. Interpretation: If there is no buried underground, the image of the ground-based radar is simple and shallow underground pipeline