2019王中王资料精选

Hebei Jurun FRP Products Co., Ltd.
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河北衡水枣强玻璃钢工业园 Address: Zaoqiang FRP Industrial Park, Hengshui , Hebei

13931811637 Mobile: 13931811637

李经理 Contact: Manager Li

306958637@qq.com Email: 306958637@qq.com

What are the details of laying glass fiber reinforced plastic pipes?




Generally speaking, mechanical trenches are used for pipe trenches in low-lying areas. Because of the low terrain, the bottom of the pipe trench may be wet or water may be present, and there is a high possibility of hard objects, mainly hard objects such as gravel, bricks, and obstruction of pipelines. In particular, when there is a large amount of water on the pipe trench, these hard objects are not easily found when they exist below the water surface. When the glass fiber reinforced plastic pipe is installed on the surface of the water, it will be directly backfilled in the future, which will cause the glass fiber reinforced plastic pipe to be directly pressed on the hard object. It may not be damaged in a short time because the backfill soil is loose.






However, due to the subsidence and compaction of the backfill soil, in the future, when the pipeline is put into production, the internal pressure effect of the pipeline and the internal liquid movement will cause the pipeline to make a small sensation. With the addition of the moment, the point load effect of the hard objects on the glass fiber reinforced plastic pipeline will become greater and greater. The point where FRP is affected by a hard object will be damaged.


In addition, the unevenness of the bottom of the trench will cause uneven stress on the pipeline. When backfilling, stress concentration will occur in the raised place. Damage to the pipes or unnecessary wear. This wear is more severe when there is pulsating pressure in the piping system.


Above-ground engineering construction generally catches up with the dry season, because the terrain of the construction site is low-lying, after the trench is excavated, there is a large amount of water, and the deepest site can reach more than 1.0m. Because of the light weight of the high-pressure glass fiber reinforced plastic pipe, after the ditch of the pipe installation, it floated on the water. Because of the buoyancy effect of water, it is difficult to press the glass fiber reinforced plastic pipeline into the bottom of the ditch during backfilling, so that the buried depth of the pipeline cannot meet the planning requirements.


In addition, because there is too much water in the ditch, it is difficult to grasp the flatness of the ditch bottom, nor can it be seen whether there are hard objects such as pipelines and crushed stones at the bottom of the ditch, and it is difficult to ensure the construction quality of FRP pipes. The accumulation of water in the pipe trench in the low-lying area simply causes the pipe trench to collapse, and the massive earthwork that collapses often directly hits the glass fiber reinforced plastic pipe line, smashing the pipeline.


The backfill soil in the low-lying areas is relatively moist, and even some are in the form of mud masses. During the backfill process, if hard masses such as stones are mixed in the mud mass, it is difficult to find them. These stones are buried in the bottom of the ditch and directly connected to the glass fiber reinforced plastic pipes. Touching, there will be great damage to FRP pipes.


It is also possible that during the backfilling process, because the stones are large, the glass fiber reinforced plastic pipe line was directly damaged under the impact of gravity. During mechanical backfilling, the soil from the full bucket is backfilled directly into the trench from a high place, and the pipeline will be damaged due to the large impact force.



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General Manager: Manager Li Mobile: 13933811637 Address: Zaoqiang FRP Industrial Park, Hengshui, Hebei Landline: 0318-8988777 Fax: 0318-8988778 Email: 306958637@qq.com
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