燃氣警示帶是管道鋪設時一定要鋪設的一種輔助設備，主要是為了提醒其他人員此處有管道，同時在出現損壞時需要維修方便檢測，下面對此作簡單介紹。

Gas warning tape is an auxiliary equipment that must be laid when laying pipelines. It is mainly to remind other personnel that there are pipelines here, and it needs to be repaired in case of damage for convenience of detection. This is briefly introduced below.

1、蹤跡燃氣警示帶敷設在管頂上方300-500mm處以保證施工挖出蹤跡帶時，傷害不到管線、，但不得敷設于路基或路面里。

1. The trace gas warning tape shall be laid 300-500mm above the top of the pipe to ensure that the pipeline will not be damaged when the trace tape is excavated during construction, but it shall not be laid in the subgrade or pavement.

2、直徑不大于400mm的管道，可在上方敷設一條蹤跡燃氣警示帶;大于400mm的管道，應在管道正上方平行敷設兩條水平凈距100-200mm的蹤跡燃氣警示帶。

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

3、敷設過程中，兩條蹤跡燃氣警示帶連接處應搭接1米左右，搭接處將鋁箔一側的PE膜剝開，露出鋁箔，使兩條蹤跡帶的鋁箔充分接觸，并用塑料膠帶將搭接部分整體包裹嚴實，保證粘接牢固，通電后能導通

3. During the laying process, the joint of the two trace gas warning tapes should be lapped for about 1 meter. The PE film on one side of the aluminum foil is stripped at the lap joint to expose the aluminum foil, so that the aluminum foil of the two trace tapes can be fully contacted, and the lap part is tightly wrapped with plastic tape to ensure that the bonding is firm and can be conducted after power on

4、在PE管管端，若蹤跡帶沒有引出地面，則應將蹤跡帶剝開50厘米長，讓鋁箔與大地充分接觸，鋁箔與大地形成回路，減少接觸電阻，可以提高探測質量。

4. At the end of the PE pipe, if the trace belt is not led out of the ground, the trace Belt should be stripped 50 cm long to make the aluminum foil fully contact the earth, and the aluminum foil forms a loop with the earth to reduce the contact resistance, which can improve the detection quality.

5、敷設過程中可設置信號源井，將蹤跡帶引出，留在井內1米，便于探測時用。

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 1 meter, which is convenient for detection.

6、蹤跡帶整體滾花成型并成卷放置、運輸，蹤跡帶開卷后會不平展。施工時，把蹤跡帶打開4-5米，兩個人用手抓住兩端用力拉平，松手后蹤跡帶便會平展。然后再進行敷設。

6. The whole tracking belt is knurled and shaped, placed and transported in rolls, and the tracking belt will be uneven after uncoiling. During construction, open the trace belt for 4-5 meters, and two people hold both ends with their hands and flatten them. After releasing their hands, the trace belt will flatten. Then lay.

7、局部超挖部分應回填夯實。當溝底無地下水時，超挖在0.15m以內，可采用原土回填;超挖在0.15,以上，可采用石灰土處理。當溝底有地下水或水量較大時，應采用級配砂石或天然砂回填標高。超挖部分回填后壓實，其密實度應接近原地基天然土的密實度。

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

8、在濕陷性黃土地區，不宜在雨期施工，或在施工時切實排除溝內積水，開挖時應在溝底預留值0.03~0.06m厚的土層進行壓實處理。

8. In the collapsible loess area, it is not suitable to construct in the rainy season, or effectively remove the ponding in the ditch during construction. During excavation, a soil layer with a thickness of 0.03~0.06m should be reserved at the bottom of the ditch for compaction.

9、溝底遇有廢棄構筑物、硬石、木頭、垃圾等雜物時必須，并應鋪一層厚度不小于0.15m砂土或素土，整平壓實及設計標高。

9. Waste structures, hard stones, wood, garbage and other debris at the bottom of the ditch must be removed, and a layer of sandy soil or plain soil with a thickness of not less than 0.15m shall be paved, leveled, compacted and designed elevation.

10、不得采用凍土、垃圾、木材及軟性物質回填。管道兩側及管頂以上0.5m內的回填土，不得含有碎石、磚塊等雜物，且不得采用灰土回填。距管頂0.5m以上的回填土中的石塊不得多于10%、直徑不得大于0.1m,且均勻分布。

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, bricks and other debris, 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、回填土應分層壓實，每層虛鋪厚度宜為0.2~0.3m，管道兩側及管頂以上0.5m內的回填土必須采用人工壓實，管頂0.5m以上的回填土可采用小型機械壓實，每層虛鋪厚度宜為0.25~0.4m。

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 pipeline and within 0.5m above the pipe top must 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、埋設燃氣管道的沿線應連續鋪設警示帶。警示帶鋪設前應將鋪設面壓實，并平整的鋪設在管道的正上方，距管定的距離宜為0.3~0.5m，但不得鋪設于路基和路面內。

12. Warning tapes shall be continuously laid 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 pavement.

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