管道安裝作業指導書.pdf
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管 道 敷 設
一、溝槽開挖
1、管道溝槽的開挖應按照圖紙所提坐標位置和標高進行，不允許挖到設計標高以下。
2、管槽施工開挖前要在距塹頂10m以外設臨時截、排水溝，溝內挖的土在路塹與溝之間修成土臺并夯實，臺頂筑成2%傾向截水溝的橫坡。臨時排水設施盡量與永久性排水設施相結合，把水及時排到自然溝，避免對路基產生危害。
3、溝槽的開挖邊坡應按圖紙要求。
4、開挖時，若遇到雨季或流砂，可酌情加大邊坡或用擋板支撐。
5、管道基礎在開挖時發現人工土、淤泥、或流砂，必須同時設計單位進行處理。
6、溝槽的開挖底寬須滿足管外壁與溝底邊線
Pipe laying
1, trench excavation
1, pipe trench excavation shall be made in accordance with coordinates of the location and elevation drawings were not allowed to excavate the following design elevation.
2, ducts before excavation cut in from the top 10m to peripheral temporary cut, drain, ditch digging the soil in the cutting and communication platform between the marble and soil compaction, built into the top 2% of Taiwan tend to ditch the cross-sectional slope. Permanent temporary drainage facilities, drainage facilities as far as possible with the combination of the water discharged to the natural channel in time to avoid harm to the subgrade.
3, trench excavation slopes should be drawings.
4, excavation, when the rainy season or the flow of sand, can increase the slope or baffle appropriate support.
5, when the pipe was found in the excavation based on artificial soil, silt, or sand, must also design units for processing.
6, the excavation trench bottom width to satisfy the exterior and ditch edges