DN3000 FRP straight pipe, what are the risks to consider when installing large diameter pipes?

Published on: 2025-08-02 16:24

Changzhou Baoshuo Pipe Fittings can customize large-diameter pipe repair clamps, DN3000 straight pipe pipe repair clamps, and DN3000 fiberglass pipe socket repair clamp.

玻璃钢管承插泄漏维修，哈夫节常州市宝硕管件baoshuo

🚨 1、Lifting and transportation risks (accident-prone links)

Risk Points	Consequences Example	Prevention and control measures
Tube body fracture	Stress concentration at the hanging point causes longitudinal cracking	✔️ Special soft sling (width ≥ 30cm) multi-point lifting (≥ 4 points)<br>✔️ The spacing between lifting points is ≤ 1/4 of the pipe length to avoid excessive cantilever length
collision damage	Hidden cracks are caused by impact on the pipe end during transportation	✔️ Rubber anti-collision rings are installed on the pipe ends, and the transport vehicle is equipped with airbags for shock absorption<br>✔️ Turning radius ≥ 12 times the pipe length, speed limit 40km/h
Foundation instability	Crane sinks and overturns	✔️ Ground bearing test before operation (bearing capacity ≥ 150kPa)<br>✔️ Laying steel plates to distribute the load and monitor settlement in real time

⚠️ 2、Trench construction risks

Risk Points	Consequences Example	Prevention and control measures
Slope collapse	Quicksand stratum trench collapse buried pipeline	✔️ Slope ≥1:1.5 (silt soil) or support steel sheet piles<br>✔️ Real-time monitoring of groundwater level, lowering the water level to below 0.5m below the bottom of the trench
Basement disturbance	Insufficient foundation bearing capacity due to over-excavation or water accumulation	✔️ Mechanical excavation with 20cm manual bottom cleaning<br>✔️ Laying 30cm graded gravel + 10cm medium sand cushion (compaction degree ≥95%)
Floating tube	Groundwater buoyancy causes pipe displacement	✔️ Calculate buoyancy (≥1.1 times the anti-buoyancy coefficient) and pour concrete weights or anchor piles

Pipeline damage, slope collapse, base disturbance, pipe body floating, etc. that occur after pipeline installation and landfill have a certain amount of offset. For those with smaller offset, you can choose Baoshuo's pipe socket repair clamp., because this pipe repair clamp has an inner cavity that can wrap up the offset angle of the pipe.

🔧 3、Pipeline Group Risk

Risk Points	Consequences Example	Prevention and control measures
Socket offset	Interface misalignment leads to sealing failure	✔️ Laser alignment tool controls axis deviation ≤3mm<br>✔️ Use hydraulic jacking device (jacking force ≤50kN) to slowly dock
Sealing ring damage	The rubber ring is twisted or squeezed out during installation	✔️ Lubricate with food-grade silicone grease<br>✔️ Insertion depth marking line + limit baffle dual control
Temperature stress	The temperature difference between day and night causes the pipe to expand and contract	✔️ Choose a temperature between 10 and 25°C for installation<br>✔️ Install flexible joints (such as K-type expansion joints) every 100m for large-diameter pipes

pipe socket repair clamp can be used to solve the leakage of the FRP pipe socket.

🌊 4、Backfill compaction risk

Risk Points	Consequences Example	Prevention and control measures
Pipe deformation exceeds the standard	Lateral soil pressure causes ovality > 3% (e.g., pipe burst at a water plant)	✔️ Backfill in layers (each layer ≤ 20cm), and manually compact the corners of the pipe side.<br>✔️ Direct mechanical rolling of the pipe top is strictly prohibited (manual compaction within 50cm of the pipe top)
Partial suspension	Inadequate backfill leads to support failure	✔️ Watertight backfilling (water injection and sedimentation + sand replenishment)<br>✔️ Geological radar scanning of the cavity area
Uneven settlement	Pipe-soil separation causes interface leakage	✔️ Transition section setting (1:2 slope between original soil and backfill soil)<br>✔️ Pipe base compaction degree is 5% higher than that of adjacent areas

⚡ 5、Special working conditions risks

Risk Points	Consequences Example	Prevention and control measures
Pipe burst during water pressure test	Too fast a pressure increase causes a weak point to rupture	✔️ Gradual pressurization (0.5 times design pressure → steady pressure for 30 minutes → 1.0 times → 1.5 times)<br>✔️ Pressure test water temperature ≥ 5℃ (to prevent low temperature brittleness)
Through structural damage	Pipe jacking construction causes settlement of adjacent buildings	✔️ Mud-water balance pipe jacking machine controls the excavation volume (≤98% of the theoretical value)<br>✔️ Synchronous grouting to fill the gap (grouting pressure 0.2~0.3MPa)
UV aging	Surface powdering after being stored in the open air for more than 3 months	✔️ The tube body is covered with UV-proof canvas<br>✔️ When the storage period is greater than 1 month, spray the weather-resistant coating (≥200μm)