The laying of warning tape is convenient. Construction and pipe burying are carried out at the same time, which serves as a warning sign to avoid unnecessary damage to pipelines during excavation in the future. Let's talk about the 12 major standards for laying cable warning tape in the following section.

(1) The trace cable warning tape shall be laid 300-500 mm above the pipe top (to ensure that the pipeline will not be damaged when the trace tape is dug out during construction), but shall not be laid in the subgrade or road surface.

(2) For pipes with a diameter of no more than 400 mm, a trace cable warning tape can be laid above; For pipelines larger than 400 mm, two tracking cable warning tapes with a horizontal clear distance of 100-200 mm shall be laid in parallel directly above the pipeline.

(3) During the laying process, the connection of the two trace cable warning tapes shall be overlapped by about 1m. At the overlapped part, the PE film on the side of the aluminum foil shall be peeled off to expose the aluminum foil, so that the aluminum foils of the two trace tapes can be fully contacted. The overlapped part shall be wrapped tightly with plastic tape to ensure that it is firmly bonded and can be conducted after power on

(4) At the end of the PE pipe, if the tracking belt is not led out of the ground, the tracking Belt should be stripped 50 cm long to allow the aluminum foil to fully contact the ground. The aluminum foil forms a loop with the ground, reducing the contact resistance and improving the detection quality.

(5) During the laying process, a signal source well can be set to lead out the trace belt and leave it in the well for 1m for easy detection.

(6) The tracking belt is knurled as a whole and placed and transported in rolls. After uncoiling, the tracking belt will be uneven. During construction, open the track belt for 4-5 meters. Two people hold both ends with their hands and pull them flat. When they release their hands, the track belt will flatten. Then lay it.

(7) Local over excavated parts shall be backfilled and compacted. When there is no groundwater at the bottom of the trench, the original soil can be used for backfilling if the over excavation is within 0.15m; If the overbreak is more than 0.15, lime soil can be used for treatment. When there is groundwater at the bottom of the trench or the water volume is large, graded sand or natural sand shall be used for backfilling to the elevation. The over excavated part shall be compacted after backfilling, and its compactness shall be close to that of the natural soil of the original foundation.

(8) In the collapsible loess area, it is not suitable to construct in rainy season, or drain the ponding in the ditch during construction. During excavation, a 0.03 ~ 0.06m thick soil layer shall be reserved at the bottom of the ditch for compaction.

(9) In case of waste structures, hard stones, wood, garbage and other sundries at the bottom of the trench, they shall be removed, and a layer of sand or plain soil with a thickness of no less than 0.15m shall be paved, leveled and compacted and the design elevation shall be achieved.

(10) Frozen soil, garbage, wood and soft materials shall not be used for backfilling. The backfill on both sides of the pipeline and within 0.5m above the pipe top shall not contain debris such as crushed stones and bricks, and shall not be backfilled with lime soil. The stones in the backfill soil above 0.5m from the pipe top shall not be more than 10%, and the diameter shall not be more than 0.1M, and shall be evenly distributed.

(11) The backfill soil shall be compacted in layers, and the virtual paving thickness of each layer should be 0.2 ~ 0.3m. The backfill soil on both sides of the pipe and within 0.5m above the pipe top should be compacted manually. The backfill soil above 0.5m above the pipe top can be compacted by small machinery, and the virtual paving thickness of each layer should be 0.25 ~ 0.4m.

(12) Warning tapes shall be laid continuously along the buried gas pipelines. Before laying the warning tape, the laying surface shall be compacted and laid flat directly above the pipe. The distance from the pipe should be 0.3 ~ 0.5m, but it shall not be laid in the subgrade and road surface.

There are 12 standards for laying cable warning tapes below. It is recommended that you look more before construction to avoid major accidents and huge property and economic losses caused by accidental damage. For more information, please visit our website http://webtest2.daoshangbao.cn Get it!