埋地塑料管道在管道内无金属、无液体的情况下，具有不导电不导磁基本绝缘的特性，金属探测等方法难以识别，那么怎么就能识别呢？探测埋地塑料地埋示踪线起了大作用！

When there is no metal or liquid in the pipeline, the buried plastic pipeline has the characteristics of non-conductive and non-magnetic basic insulation, which is difficult to identify by metal detection and other methods, so how can it be identified? Detecting the tracer line of buried plastic pipeline plays a big role!

在实际应用中，管材需要更换、修补或者管道改建施工时如无法通过金属探测定位（例：无金属示踪系统的埋地PE燃气管、埋地PE给、排水管等），还可以采用以下方法定位埋地塑料管道，应该查找出对应工程的施工图纸，大致确定埋地管道位置、走向、深度。然后采用声波定位法确定管道位置。对于遗失施工图纸或者施工图纸标准不清晰的，可以直接通过声波定位法确定管道位置。

In practical application, if pipes need to be replaced, repaired or reconstructed, if it is impossible to locate through metal detection (e.g. buried PE gas pipes without metal tracking system, buried PE water supply and drainage pipes, etc.), the following methods can also be used to locate buried plastic pipelines. The construction drawings of corresponding projects should be found to roughly determine the location, direction and depth of buried pipelines. Then the acoustic positioning method is used to determine the position of the pipeline. If the construction drawings are missing or the standards of the construction drawings are not clear, the pipeline position can be directly determined by acoustic positioning method.

该方法使用声波定位设备，基于声学探测原理，分发射和接收两部分组成。音频驱动器通过转换接头连接到管道系统检测井内裸露的管件、管材上，向其施加特定组合频率的声波信号，声波信号带动管道共振并向远端传播，传播过程一部分声波能量可以到达地地面，我们再通过手持接收装置沿路面接收对应的声波信号，通过耳机内反馈的声波信号强度及数字显示的声波大小组合判断，从而快速定位出埋地塑料管道位置；效率高及准确率较好。

This method uses acoustic positioning equipment, which is based on the principle of acoustic detection and consists of two parts: transmitting and receiving. The audio driver is connected to the exposed pipe fittings and pipes in the detection well of the pipeline system through the adapter, and the acoustic signal with a specific combined frequency is applied to it. The acoustic signal drives the pipeline to resonate and propagate to the far end. Part of the acoustic energy can reach the ground during the propagation process, and then we receive the corresponding acoustic signal along the road through the handheld receiving device, Through the combination judgment of the acoustic signal strength fed back from the earphone and the acoustic wave size displayed digitally, the position of the buried plastic pipeline can be quickly located; High efficiency and good accuracy.

厂家认为对于管道内无金属、无液体的埋地塑料管道，简捷便利的示踪方法仍然是敷设时安装金属示踪线系统。声波定位法增大人工与设备开销，不利于维修与更换，所以金属示踪系统的埋地PE燃气管、埋地PE给、排水管还是比较常用的方法了。

The manufacturer believes that for buried plastic pipelines without metal and liquid in the pipeline, the simple and convenient tracing method is still to install the metal tracing line system when laying. Acoustic positioning method increases the cost of labor and equipment, which is not conducive to maintenance and replacement, so the buried PE gas pipe, buried PE water supply and drainage pipe of metal tracking system are still commonly used.

此外要注意，检测信号能加载到示踪线上，中间故障太多，泄漏严重，中间没有检测井。安装了地埋示踪线，始端末端剪断悬空，与大地不接触，中间阀井内示踪线未作固定处理。示踪线线径太小，不能满足检测信号传输要求，容易被施工挖断或自然应力破坏。

In addition, it should be noted that the detection signal can be loaded onto the tracer line, there are too many intermediate faults, serious leakage, and there is no detection well in the middle. The buried tracer line is installed, and the beginning and end are cut and suspended in the air, which is not in contact with the earth. The tracer line in the middle valve well is not fixed. The diameter of the tracer line is too small to meet the requirements of detection signal transmission, and it is easy to be cut off by construction or damaged by natural stress.

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