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About UsZHONGTAI HENGBANG Engineering Technology Co., Ltd. is located in the Academician Entrepreneurship Base of Tai'an National High-Tech Industrial Development Zone, Shandong Province. The company is a comprehensive service provider specializing in engineering consulting and design, materials R&D and manufacturing, as well as operations and maintenance. With strong technical expertise and robust R&D capabilities, its products are primarily applied in critical areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection solutions for isolating and preventing leakage from urban waste and highly hazardous industrial solid waste.
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ProductsZHONGTAI HENGBANG Engineering Technology Co., Ltd. boasts production lines sourced from countries including Germany, Italy, Denmark, Belgium, and Switzerland, adhering to rigorous quality management systems and testing standards. We are equipped with advanced testing equipment capable of evaluating tensile strength, creep resistance, UV protection, water permeability, flame retardancy, antistatic properties, chemical corrosion resistance, and oxidation performance.
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Application CasesThe product is primarily used in hydraulic infrastructure projects, transportation infrastructure projects, and environmental protection applications—including the isolation and impermeability of municipal waste and highly hazardous industrial solid waste.
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BlogPrioritizing technological advancement and innovation, our company is committed to fulfilling user needs to the fullest extent possible.
Specific Applications of Yunnan Tunnel Waterproof Membranes in Tunnel Construction Projects
Release date:
2020-11-25
The overlapping area should be预留 with an overlap allowance of at least 20 cm, and the width of the waterproof membrane welds should range between 10 and 20 cm.
At that time, an overlap allowance of 1–2 meters should be reserved. Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Construction Preparation
1. Preparation of Construction Tools
(1) 1–2 heat-sealing welding machines: Used for heat-sealing and welding overlaps between waterproof materials.
(2) 1–2 hot-air welding guns: Used during the waterproofing material installation process to repair any damage to the waterproof membrane caused by human error or other factors.
(3) Leak detector: Used to inspect the quality of double-welded seam overlaps, applying pressure to ensure the welds are securely sealed.
(4) Additionally, you will need to equip 1 work platform, 2 electric drills, 2 75W soldering irons, 2 small pressure rollers, and 2 hammers, among other tools.
2. Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Preparation at the construction site
(1) The construction platform vehicle should be as convenient as possible for operations, while ensuring safety.
(2) As per the specified requirements, ensure the base surface is as smooth as possible, and address any over- or under-excavation accordingly.
(3) Sharp objects should be addressed on the exposed anchor bolts of the initial support to prevent damage to the waterproofing material.
(4) Clear the work site and remove all sharp objects that could potentially damage the waterproofing materials.
2. Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Construction Techniques and Procedures
(1) When laying the waterproof membrane, use specialized plastic spacers and, depending on the condition of the substrate, opt to secure the membrane to the surface at four key points using steel nails, screws, and plastic expansion anchors whenever possible.
(2) During the laying Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). At this point, the waterproof membrane should be kept with a certain amount of sag—adjust the sag so that when you press the membrane against the rock surface with your palm, there’s no feeling of tightness. When laying the membrane circumferentially, ensure that its longitudinal direction is perpendicular to the tunnel’s longitudinal axis.
(3) During the laying process, two pieces Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). The overlapping area should be预留 with an overlap allowance of at least 20 cm, and the width of the waterproof membrane welds should be between 10 and 20 cm.
(4) Before starting the weld, preheat the hot-melt welding machine and set the appropriate temperature and crawling speed. Typically, the temperature should be set around 300°C, with the speed adjusted to 2 speed units. Operation can begin once the indicator light turns from green to red. During the welding process, continuously monitor the melting condition of the seam and adjust the temperature or speed control knobs as needed—until the weld achieves optimal fusion.
(5) Complete the weld seam in one continuous pass whenever possible, minimizing interruptions and downtime to avoid unnecessary repairs. If interruptions or shutdowns occur, make timely repairs to prevent further issues.
(6) Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). When the longitudinal weld seam overlaps with the transverse weld seam, first trim the edge of the already-welded seam to a smooth finish over approximately 100 cm, then proceed with welding the second seam. Finally, use a hot-air welding gun to firmly fuse the overlapping area of the two seams together.
(7) During the laying Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). At that time, an overlap allowance of 1–2 meters should be预留.
2. Acceptance Inspection
(1) The foreman must regularly inspect the welding quality and check whether the waterproof membrane in the Wenshan Tunnel in Yunnan has any leaks or damages. Any damaged areas should be circled with a black marker, while quality control personnel are also required to continuously monitor the installation quality and mark any defects with a red marker. [PaperNet]
(2) At Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). The air pocket formed between the overlapping double welds should be inspected for leaks using a leak detector. If any pressure loss is detected, locate the exact leak point immediately and repair it promptly with a hot-air welding gun—continue this process until the weld passes inspection.
(3) After completing the lining installation and before proceeding with the secondary lining, it is necessary to inspect Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Conduct a comprehensive, thorough, and rigorous inspection to prevent certain omissions and human-induced damage during the construction process.
(4) Mark any identified damage and promptly repair it using a hot-air welding gun. When patching, cut the patches into rounded corners—avoid making them too small. Ensure the repair is secure enough that it cannot be torn off by hand; if it can still be pulled away, the repair must be redone.
(5) Before applying the secondary lining, it's also important to strengthen the monitoring of Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Protection measures to prevent human-induced damage and unnecessary repairs.
(6) When performing the secondary lining concrete pouring, pay even closer attention to Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would make repairs impossible—and would inevitably leave a lasting隐患 (hidden risk).
(7) After the secondary lining is completed, pay attention to Protection is crucial, as damaging the waterproof membrane in the Yunnan Wenshan Tunnel at this point would render repairs impossible—and would inevitably leave a lasting隐患 (hidden risk). Protect the reserved section to ensure the smooth progress of the next construction phase.
ZHONGTAI HENGBANG Engineering Technology Co., Ltd. is a comprehensive service provider integrating engineering consulting and design, material R&D and manufacturing, as well as operations and maintenance. With robust technical expertise and strong R&D capabilities, our products are prominently applied in critical environmental protection fields such as hydraulic infrastructure projects, transportation infrastructure initiatives, and the isolation and impermeability of urban waste and highly hazardous industrial solid wastes. The company boasts advanced production lines sourced from Germany, Italy, Denmark, Belgium, Switzerland, and other countries, adhering to stringent quality management systems and rigorous testing standards. We are equipped with state-of-the-art equipment capable of evaluating key properties—including tensile strength, creep resistance, UV resistance, water permeability, flame retardancy, anti-static performance, chemical corrosion resistance, and oxidation stability—ensuring top-tier product quality. Furthermore, our enterprise has successfully obtained certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA certificates, along with inspection reports from China’s Ministry of Railways and Ministry of Water Resources, as well as the prestigious EU CE certification. Additionally, we have undergone specialized laboratory testing in Russia, Australia, the United States, and other regions. We are dedicated to delivering the highest-quality geosynthetic materials and the most comprehensive services for projects including reinforced soil retaining walls, soft ground stabilization, land reclamation cofferdams and their maintenance, hydraulic engineering, slope remediation and landscaping, road construction, and mining projects.
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