Shenyang Artificial Lake Anti-Seepage Construction Process
The anti-seepage project at the Shenyang artificial lake involves a series of well-planned steps to ensure long-term waterproofing performance. The process begins with basic excavation, followed by the application of a 20-30mm cement mortar protective layer on the lake bottom. Next, slope cutting, compaction, and leveling are carried out to prepare the base surface. A composite geomembrane is then bonded to the vertical retaining wall, ensuring a secure and watertight connection. After the base surface is cleaned and leveled, the construction handover takes place. The underwater water pipe sealing is also addressed to prevent leakage. The composite geomembrane is laid and welded in place, with careful attention to welding quality and repairs. Once all welding is completed, the process is handed over for final inspection and acceptance. Second, Project Overview
1. The maximum design water level is approximately 0.6 meters. 2. The total area requiring waterproofing is around 800 square meters. 3. A ceramsite brick masonry retaining wall has been constructed. 4. There is a collapse pit located beneath the water body. Third, Main Waterproof Materials
1. Composite geomembrane rolls with specifications: 50*4m, 150g/m²/0.5mm/150g/m². 2. GB rubber waterstop strips for sealing joints and underwater nozzles. Fourth, Basic Conditions
1. After foundation excavation, the slopes are cut, leveled, and compacted. Disturbed soil is backfilled in layers, with each layer not exceeding 400mm in thickness. Water is sprinkled during compaction to ensure proper density. 2. Sharp objects such as bricks, stones, tiles, glass shards, metal chips, branches, and plant roots are removed from the site. 3. All obstacles are cleared, and the field is prepared to meet the laying conditions for the geomembrane. 4. The surrounding retaining walls, pump pits, bridge foundations, and underwater nozzle installations must be fully completed before geomembrane installation. Fifth, Welding and Laying Technology
1. **Welding Technology**: - The lap width of the weld bead is 80–100mm. - Natural pleats on flat and vertical surfaces should be 5%–8%. - Reserved expansion and contraction is 3%–5%. - Scrap residue is kept between 2%–5%. - Hot-melt welding is performed at a temperature of 280–300°C, with a travel speed of 2–3 meters per minute. Double-welding is used for better sealing. - Damaged areas are repaired by cutting out the damaged part and using matching material with hot melt adhesive and polyethylene sealant. - No imitation connections are allowed; mechanical stitching is used instead. - Underwater nozzles are sealed using GB rubber sealing strips, metal bandages, and anti-corrosion treatments. 2. **Laying Technology**: - The composite geomembrane is laid from east to west or vice versa. Each section is completed in one go, including the height of the retaining walls on both sides. - The laying sequence starts from the channel axis towards the south and north directions. - First, a 20–30mm cement mortar protective layer is applied at the lake bottom, followed by bonding the geomembrane to the vertical retaining wall. - The bonding process involves applying adhesive to both the geomembrane and the retaining wall surface, allowing it to dry for about 5 minutes before pasting, pressing, and flattening. The adhesive is made of asphalt latex paint, cement, and water. After pasting, nails are fixed above the water level line and treated for waterproofing. Sixth, Quality Acceptance
1. The materials and construction of the composite geomembrane comply with national standards issued by the State Administration for Market Regulation. 2. Quality inspections include self-inspection by the construction unit, sampling by the contractor, and other related checks. 3. Welding quality is inspected using the "inflation pressure method," while damage repair is checked through "visual measurement." The inflation pressure detection standard is 0.06MPa. 4. The quality acceptance process includes process handover procedures and final project acceptance. 5. Normal leakage of the artificial lake should not exceed 15mm per 24 hours (including seasonal evaporation loss). Seventh, Construction Schedule
1. Daily output is approximately one unit per day, covering an area of 2000–2500 square meters. 2. The planned construction period is three days. Eighth, Recommendations
1. It is essential to strengthen the protection and management of composite geomembrane products, raise the awareness of construction personnel regarding waterproofing, and ensure timely commissioning to guarantee project quality. This is crucial for the success of the project. 2. It is recommended that the contractor assign a dedicated supervisor to monitor the work. Any damage to the geomembrane found by relevant personnel should be immediately reported to the waterproofing team for prompt repair. 3. The composite geomembrane must be protected from oil stains, as this can reduce bonding strength. For detailed storage and protection guidelines, refer to the "Introduction to Geomembrane Construction Methods." 4. The following key points should be carefully addressed: - After welding, the mortar protective layer on the lake bottom must be installed first. - Waterproofing of the bridge foundation should use steel-penetrating welding to avoid electric welding-related issues. - The combination of the composite geomembrane and the wall surface should avoid large-area air bubbles. Http://news.chinawj.com.cn Submission:
The anti-seepage project at the Shenyang artificial lake involves a series of well-planned steps to ensure long-term waterproofing performance. The process begins with basic excavation, followed by the application of a 20-30mm cement mortar protective layer on the lake bottom. Next, slope cutting, compaction, and leveling are carried out to prepare the base surface. A composite geomembrane is then bonded to the vertical retaining wall, ensuring a secure and watertight connection. After the base surface is cleaned and leveled, the construction handover takes place. The underwater water pipe sealing is also addressed to prevent leakage. The composite geomembrane is laid and welded in place, with careful attention to welding quality and repairs. Once all welding is completed, the process is handed over for final inspection and acceptance. Second, Project Overview
1. The maximum design water level is approximately 0.6 meters. 2. The total area requiring waterproofing is around 800 square meters. 3. A ceramsite brick masonry retaining wall has been constructed. 4. There is a collapse pit located beneath the water body. Third, Main Waterproof Materials
1. Composite geomembrane rolls with specifications: 50*4m, 150g/m²/0.5mm/150g/m². 2. GB rubber waterstop strips for sealing joints and underwater nozzles. Fourth, Basic Conditions
1. After foundation excavation, the slopes are cut, leveled, and compacted. Disturbed soil is backfilled in layers, with each layer not exceeding 400mm in thickness. Water is sprinkled during compaction to ensure proper density. 2. Sharp objects such as bricks, stones, tiles, glass shards, metal chips, branches, and plant roots are removed from the site. 3. All obstacles are cleared, and the field is prepared to meet the laying conditions for the geomembrane. 4. The surrounding retaining walls, pump pits, bridge foundations, and underwater nozzle installations must be fully completed before geomembrane installation. Fifth, Welding and Laying Technology
1. **Welding Technology**: - The lap width of the weld bead is 80–100mm. - Natural pleats on flat and vertical surfaces should be 5%–8%. - Reserved expansion and contraction is 3%–5%. - Scrap residue is kept between 2%–5%. - Hot-melt welding is performed at a temperature of 280–300°C, with a travel speed of 2–3 meters per minute. Double-welding is used for better sealing. - Damaged areas are repaired by cutting out the damaged part and using matching material with hot melt adhesive and polyethylene sealant. - No imitation connections are allowed; mechanical stitching is used instead. - Underwater nozzles are sealed using GB rubber sealing strips, metal bandages, and anti-corrosion treatments. 2. **Laying Technology**: - The composite geomembrane is laid from east to west or vice versa. Each section is completed in one go, including the height of the retaining walls on both sides. - The laying sequence starts from the channel axis towards the south and north directions. - First, a 20–30mm cement mortar protective layer is applied at the lake bottom, followed by bonding the geomembrane to the vertical retaining wall. - The bonding process involves applying adhesive to both the geomembrane and the retaining wall surface, allowing it to dry for about 5 minutes before pasting, pressing, and flattening. The adhesive is made of asphalt latex paint, cement, and water. After pasting, nails are fixed above the water level line and treated for waterproofing. Sixth, Quality Acceptance
1. The materials and construction of the composite geomembrane comply with national standards issued by the State Administration for Market Regulation. 2. Quality inspections include self-inspection by the construction unit, sampling by the contractor, and other related checks. 3. Welding quality is inspected using the "inflation pressure method," while damage repair is checked through "visual measurement." The inflation pressure detection standard is 0.06MPa. 4. The quality acceptance process includes process handover procedures and final project acceptance. 5. Normal leakage of the artificial lake should not exceed 15mm per 24 hours (including seasonal evaporation loss). Seventh, Construction Schedule
1. Daily output is approximately one unit per day, covering an area of 2000–2500 square meters. 2. The planned construction period is three days. Eighth, Recommendations
1. It is essential to strengthen the protection and management of composite geomembrane products, raise the awareness of construction personnel regarding waterproofing, and ensure timely commissioning to guarantee project quality. This is crucial for the success of the project. 2. It is recommended that the contractor assign a dedicated supervisor to monitor the work. Any damage to the geomembrane found by relevant personnel should be immediately reported to the waterproofing team for prompt repair. 3. The composite geomembrane must be protected from oil stains, as this can reduce bonding strength. For detailed storage and protection guidelines, refer to the "Introduction to Geomembrane Construction Methods." 4. The following key points should be carefully addressed: - After welding, the mortar protective layer on the lake bottom must be installed first. - Waterproofing of the bridge foundation should use steel-penetrating welding to avoid electric welding-related issues. - The combination of the composite geomembrane and the wall surface should avoid large-area air bubbles. Http://news.chinawj.com.cn Submission:
Chloride Free Mgo Wall Panels
Shangdong Oushibao New Materials Co.,Ltd , https://www.oushibaomgo.com