Several Common Problems and Solutions in the Installation of Municipal Water Supply and Drainage Pipes

In the process of pipeline construction, conditions such as pipeline position deviation or water accumulation often occur. According to the experience of many projects contacted by Hubei AD Building Materials Co., Ltd., a professional pe double-wall corrugated pipe manufacturer, these problems cannot be ignored. Pipeline position deviation or water accumulation Causes Measurement errors, construction aliasing and accidental avoidance of original structures, resulting in position deviation on the plane, water accumulation on the facade or even inverted slope phenomenon. Prevention and control measures Before construction, carefully follow the construction measurement specifications and procedures for re-testing and protection of the transfer piles. Construction lofting combines hydrogeological conditions, according to the buried depth and design requirements and relevant regulations, and needs to be re-tested and inspected. The error meets the requirements and then delivered to the construction. The construction is carried out strictly in accordance with the sample pile, and the groove and the foundation are well measured and accepted for the axis and longitudinal slope. If the structure is accidentally encountered during the construction process, a connecting well should be added at an appropriate position, and the connection well should be connected in a straight line, and the connecting well angle is greater than 135. The pe double-wall corrugated pipe produced by Hubei AD Building Materials Co., Ltd. can better adapt to reasonable construction planning under normal construction and installation, and reduce latent risks such as position deviation caused by pipe problems. Pipeline leakage, failed water closure test Causes Uneven foundation sinking, poor construction quality of pipes and their interfaces, poor sealing of the end of the water closure section, poor construction quality of wells, etc. Prevention and control measures Poor pipeline foundation conditions are carefully constructed according to the design requirements. When the foundation geological and hydrological conditions are poor, soil replacement and improvement treatment are carried out. If the soil at the bottom of the tank is disturbed or soaked in water, first dig out the soft soil layer and then the over-excavated part is backfilled with materials with good stability such as miscellaneous sand or gravel. When excavating the earth below the groundwater level, do a good job of drainage and precipitation at the bottom of the pit. If necessary, a 20cm thick soil layer can be reserved at the bottom of the pit, and the subsequent excavation will be removed. The pipes used for poor pipe quality must have a quality qualification report. As a professional pe double-wall corrugated pipe manufacturer, Hubei AD Building Materials Co., Ltd. strictly checks the product quality. Each batch of products comes with a quality qualification report. The appearance quality of the pipes meets the requirements. Check section by section before installation. Pipe interface filler and poor construction quality Choose good quality interface filler and according to the test mix ratio and reasonable construction technology. When wiping construction, the interface joint is clean, and if necessary, it should be chiseled. Check the poor construction quality of the well Check the well masonry mortar is full, and the hook joint is completely not omitted; Clean and wet the surface before plastering, and timely calendering and collecting the slurry and maintaining it when plastering; In case of groundwater, the plastering and the hook joint should be completed in time with the masonry, and the inner plastering or inner jointing should not be carried out after backfilling. The outer surface of the pipe connected to the inspection well should be wet and evenly brushed with a layer of cement puree, and the inner and outer plastering should be done after the seat slurry is in place to prevent leakage. Before planning the reserved branch pipe seal is not dense and plugging, the inner wall of the pipe within the range of about 0.5m of the nozzle should be cleaned, the cement puree should be painted, and the bricks used should be wetted for later use. The number of the plugging mortar should not be lower than M7.5, and it has a good consistency. The number of the cement mortar used for jointing and plastering should not be lower than M15. When the pipe diameter is large, only the outer single-sided jointing or plastering should be done when the inner and outer sides are small. The plastering should be constructed according to the waterproof 5-layer construction method. Under normal circumstances, the sealing should be carried out before the inspection of the well masonry. Check the deformation and sinking of the well, and the quality of the structural parts is poor. Causes Check the deformation and sinking of the well. The quality and installation quality of the well cover are poor, and the installation of the well ladder is too arbitrary. Prevention and control measures Carefully do a good job in the base layer and cushion of the inspection well, and break the pipe to make a flow groove to prevent the well body from sinking. Inspection well masonry quality should control the center position and height of the well chamber and wellhead to prevent deformation of the well body. Inspection well cover and seat should be matched; when installing, seat slurry should be full; light and heavy models and surface and bottom are good to use, iron climbing installation should control the position of the first step up and down, and the plane position is accurate. In the entire inspection well construction and structural parts installation process, with high-quality pe double-wall corrugated pipes and other related products from Hubei AD Building Materials Co., Ltd. can effectively ensure the overall quality of the project and reduce the follow-up problems caused by the mismatch between pipes and inspection wells and other structural parts. Backfill soil subsidence Causes The backfill around the inspection well is not dense, and it is not layered and tamped as required. The quality of the filler is not good, the water content is not well controlled, and other reasons affect the compaction effect, resulting in excessive settlement. Prevention measures When backfilling the pipe groove, the appropriate filler and compaction (ramming) machinery should be selected according to the location of the backfill and the construction conditions. When the groove is narrow, manual or frog ramming machine can be used to ram it. Different fillers and different filling thicknesses should be used with different ramming instruments to achieve the most economical compaction effect. The silt, roots, turf and its rot plants in the filler not only affect the compaction effect, but also dry shrinkage and rot in the soil to form holes. These materials should not be used as fillers to avoid settlement. Control the water content of the filler to be greater than about 2% of the optimal water content; in case of groundwater or after rain, the construction must first drain the water and then layer it with filling and compaction. The treatment does not affect the small amount of settlement of other structures. No treatment or only surface treatment can be done. For example, local filling can be taken on asphalt pavement to avoid water accumulation. If it causes the foundation of other structures to be emptied and damaged, pump-pressed cement slurry can be used to fill. If it causes structural damage, bad fillers should be dug out, replaced with materials with good stability, and then the damaged structures should be restored after compaction. Source: Hubei AD Yuan Building Materials Co., Ltd., welcome to share! As a professional PE double-wall corrugated pipe manufacturer, Hubei Au Yuan Building Materials Co., Ltd. has been committed to providing high-quality products and technical support for various pipeline construction projects.