一、结构
电缆警示带由底膜、面膜和铝箔组成，底膜与面膜、底膜与铝箔结合牢固，并整体滚花成型。The cable warning tape is composed of a bottom film, a surface film and aluminum foil. The bottom film is firmly combined with the surface film and the aluminum foil, and is integrally embossed.
踪迹电缆警示带印有醒目、性的警示语，不掉色、不褪色。The trace cable warning tape is printed with eye-catching and permanent warning words, without fading or discoloration.
二、物理性能
- 踪迹电缆警示带每卷内无接头。There is no joint in each roll of trace cable warning tape.
- 踪迹电缆警示带两层塑料薄膜的剥离强度应大于 0.10N/mm（拉伸速度 25mm/min）。The peel strength of the two layers of plastic film of the trace cable warning tape should be greater than 0.10N/mm (tensile speed 25mm/min).
- 每卷踪迹电缆警示带应通电导通，电阻小于 20Ω/100m（用欧姆表检测）。Each roll of trace cable warning tape should be electrically conductive, and the resistance is less than 20Ω/100m (detected by an ohmmeter).
- 踪迹电缆警示带的延伸率≥25％。The elongation rate of the trace cable warning tape is ≥25%.
三、敷设
- 踪迹电缆警示带敷设在管顶上方 300 - 500mm 处（以保证施工挖出踪迹带时，伤害不到管线），但不得敷设于路基或路面里。The trace cable warning tape is laid at 300 - 500mm above the pipe top (to ensure that the pipeline will not be damaged when the trace tape is excavated during construction), but it must not be laid in the subgrade or pavement.
- 直径不大于 400mm 的管道，可在上方敷设一条踪迹电缆警示带；大于 400mm 的管道，应在管道正上方平行敷设两条水平净距 100 - 200mm 的踪迹电缆警示带。For pipelines with a diameter of not more than 400mm, one trace cable warning tape can be laid above; for pipelines larger than 400mm, two trace cable warning tapes with a horizontal clear distance of 100 - 200mm should be laid in parallel directly above the pipeline.
- 敷设过程中，两条踪迹电缆警示带连接处应搭接 1 米左右，搭接处将铝箔一侧的 PE 膜剥开，露出铝箔，使两条踪迹带的铝箔充分接触，并用塑料胶带将搭接部分整体包裹严实，保证粘接牢固，通电后能导通。During the laying process, the connection of two trace cable warning tapes should be overlapped by about 1 meter. At the overlap, peel off the PE film on the aluminum foil side to expose the aluminum foil, so that the aluminum foils of the two trace tapes are in full contact. Then, use plastic tape to tightly wrap the overlapped part as a whole to ensure firm bonding and conductivity after being energized.
- 在 PE 管管端，若踪迹带没有引出地面，则应将踪迹带剥开 50 厘米长，让铝箔与大地充分接触，铝箔与大地形成回路，减少接触电阻，可以提高探测质量。At the end of the PE pipe, if the trace tape is not led out of the ground, the trace tape should be peeled off for 50 centimeters long to allow the aluminum foil to fully contact the ground. The aluminum foil and the ground form a circuit to reduce contact resistance and improve detection quality.
- 敷设过程中可设置信号源井，将踪迹带引出，留在井内 1 米，便于探测时用。During the laying process, a signal source well can be set up to lead out the trace tape and leave it in the well for 1 meter for use during detection.
- 踪迹带整体滚花成型并成卷放置、运输，踪迹带开卷后会不平展。施工时，把踪迹带打开 4 - 5 米，两个人用手抓住两端用力拉平，松手后踪迹带便会平展。然后再进行敷设。The trace tape is integrally embossed and placed and transported in rolls. After the trace tape is unrolled, it will not be flat. During construction, open the trace tape for 4 - 5 meters. Two people hold the two ends with their hands and pull it flat hard. After releasing their hands, the trace tape will be flat. Then lay it.
- 局部超挖部分应回填夯实。当沟底无地下水时，超挖在 0.15m 以内，可采用原土回填；超挖在 0.15m 以上，可采用石灰土处理。当沟底有地下水或水量较大时，应采用级配砂石或天然砂回填标高。超挖部分回填后压实，其密实度应接近原地基天然土的密实度。The locally over-excavated part should be backfilled and compacted. When there is no groundwater at the bottom of the ditch, if the over-excavation is within 0.15m, the original soil can be used for backfilling; if the over-excavation is more than 0.15m, lime soil can be used for treatment. When there is groundwater or a large amount of water at the bottom of the ditch, graded sand and gravel or natural sand should be used to backfill to the elevation. After the over-excavated part is backfilled, it should be compacted, and its compactness should be close to that of the natural soil of the original foundation.
- 在湿陷性黄土地区，不宜在雨期施工，或在施工时切实排除沟内积水，开挖时应在沟底预留值 0.03 - 0.06m 厚的土层进行压实处理。In collapsible loess areas, it is not suitable to construct during the rainy season. Or during construction, the accumulated water in the ditch should be effectively drained. When excavating, a soil layer with a thickness of 0.03 - 0.06m should be reserved at the bottom of the ditch for compaction treatment.
- 沟底遇有废弃构筑物、硬石、木头、垃圾等杂物时必须，并应铺一层厚度不小于 0.15m 砂土或素土，整平压实及设计标高。When there are abandoned structures, hard stones, wood, garbage and other sundries at the bottom of the ditch, they must be removed. A layer of sand or plain soil with a thickness of not less than 0.15m should be laid, leveled, compacted and designed elevation.
- 不得采用冻土、垃圾、木材及软性物质回填。管道两侧及管顶以上 0.5m 内的回填土，不得含有碎石、砖块等杂物，且不得采用灰土回填。距管顶 0.5m 以上的回填土中的石块不得多于 10%、直径不得大于 0.1m，且均匀分布。Frozen soil, garbage, wood and soft substances shall not be used for backfilling. The backfill soil on both sides of the pipeline and within 0.5m above the pipe top shall not contain debris such as gravel and bricks, and lime soil shall not be used for backfilling. The stones in the backfill soil more than 0.5m above the pipe top shall not be more than 10%, and the diameter shall not be greater than 0.1m and be evenly distributed.
- 回填土应分层压实，每层虚铺厚度宜为 0.2 - 0.3m，管道两侧及管顶以上 0.5m 内的回填土必须采用人工压实，管顶 0.5m 以上的回填土可采用小型机械压实，每层虚铺厚度宜为 0.25 - 0.4m。The backfill soil should be compacted in layers. The loose paving thickness of each layer should be 0.2 - 0.3m. The backfill soil on both sides of the pipeline and within 0.5m above the pipe top must be compacted manually. The backfill soil more than 0.5m above the pipe top can be compacted by small machinery. The loose paving thickness of each layer should be 0.25 - 0.4m.
- 埋设燃气管道的沿线应连续铺设警示带。警示带铺设前应将铺设面压实，并平整的铺设在管道的正上方，距管顶的距离宜为 0.3 - 0.5m，但不得铺设于路基和路面内。Along the line where the gas pipeline is buried, warning tapes should be laid continuously. Before laying the warning tape, the laying surface should be compacted and laid flat directly above the pipeline. The distance from the pipe top should be 0.3 - 0.5m, but it must not be laid in the subgrade or pavement.
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